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Manager
About the job
Speechify is seeking a Tech Lead to guide the Android Core Product team based in Kharkiv, Ukraine. This position sets the technical direction for the team and plays a key part in shaping how users experience Speechify on Android devices. The Tech Lead partners with colleagues from various disciplines to deliver new features and ongoing improvements for the Android platform.
What you will do
Provide leadership and technical guidance to the Android Core Product team in Kharkiv
Develop new solutions aimed at enhancing the Android user experience
Work closely with product, design, and engineering teams to achieve project objectives
Mentor junior developers, fostering knowledge sharing and promoting strong coding and design practices
Role overview Speechify is seeking a Tech Lead to guide the Android Core Product team based in Kharkiv, Ukraine. This position sets the technical direction for the team and plays a key part in shaping how users experience Speechify on Android devices. The Tech Lead partners with colleagues from various disciplines to deliver new features and ongoing improvem…
About Resorcer.com Resorcer.com is a Ukrainian engineering company working as part of an international engineering and manufacturing group. The Kyiv office serves as a key hub for daily operations and collaboration with global partners. Role Overview The Business Assistant / Office Manager will support executive leadership, oversee office operations, and coordinate activities across departments. This position is central to keeping the Kyiv office organized and responsive to both local and international needs. Main Responsibilities Provide executive assistance to senior management Manage daily office operations and supplies Coordinate internal processes and administrative workflows Facilitate communication between Kyiv staff and global stakeholders Support operational efficiency across teams What We Look For Strong communication skills Attention to detail and organizational ability Experience handling multiple priorities Comfort working in a high-stakes environment Ability to collaborate with both local and international colleagues Location and Schedule This is a full-time, on-site role based in downtown Kyiv.
Role Overview Skelar is looking for a Technical SEO Specialist to help improve online visibility and search engine rankings. This fully remote position is open to candidates based in Ukraine. What You Will Do Implement SEO strategies that support organic growth goals Optimize website performance for search engines Conduct detailed analysis to identify opportunities for increased organic traffic Collaborate with the digital marketing team to align SEO efforts with broader campaigns Location Remote within Ukraine
Data Scientist (Speech)Join Kyivstar as we lead the charge in our AI transformation strategy, harnessing state-of-the-art Machine Learning and Speech technologies to revolutionize our internal operations and enhance day-to-day tasks. Our commitment extends beyond our organization as we empower partners and clients to maximize their benefits from these groundbreaking technologies.
Skelar is a pioneering Ukrainian venture builder dedicated to developing international tech businesses. Together with our co-founders, we assemble strong teams to excel in global markets.Currently, Skelar boasts numerous businesses across various niches—from EdTech to marketplaces. Our ventures consistently rank among the top startups and product companies in Ukraine, achieving high rankings in the App Store and developing platforms utilized by millions. Our businesses have been featured in leading media outlets like TechCrunch and Wired.We take pride in our robust team of over 1000 specialists, all possessing exceptional expertise and ambitious goals. Our people are our most valuable asset, and we strive to build businesses alongside the top talents in the market.We are excited to announce the launch of a new product and are on the lookout for a Senior User Acquisition Manager to lead our Meta Ads strategy (initially web2web, followed by web2app).We are seeking not just an executor, but a future leader who is eager to build this direction from the ground up, with the potential to become a manager for three exceptional User Acquisition Managers (each with their own source) within 6-8 months. This is an opportunity to develop a strategy from scratch and acquire the necessary resources for large-scale experiments that leverage accumulated experience into business results.Key Challenges Ahead:Establishing infrastructure for launching paid Meta traffic (and other channels) as part of the new business launch with web2web and web2app acquisition;Launching the first Meta Ads traffic for the product and collaborating with the product marketing and creative teams to find the unit economics;Building a system for stable and continuous testing of marketing hypotheses to find the product-market fit in priority markets;Becoming a mentor for the current User Acquisition team, providing practical experience and enhancing their performance;What We Value:3+ years of experience with Meta Ads in B2C SaaS products (practical experience with Google Ads and TikTok Ads is a plus);Successful track record of managing advertising budgets (from $500,000/month);Data-driven approach to hypothesis validation, always tracking metrics during launches;Appreciation for unconventional approaches, particularly regarding tests and intriguing cases;Initiative and a desire to grow quickly into a people manager role;Intermediate English proficiency (B1+);
About UsAt Ruby Labs, we are a premier technology organization dedicated to developing and managing cutting-edge consumer products. Our company thrives on innovation and offers a wide array of opportunities across the health, education, and entertainment sectors. Our dynamic teams are at the forefront of creating consumer-centric solutions, and we are continually seeking enthusiastic individuals to join our mission. Discover more about our journey at: https://rubylabs.com/about-us/About the RoleWe are in search of a seasoned Senior Data Analyst or Lead Data Analyst with extensive expertise in subscription billing analytics and robust technical proficiency in ClickHouse (with a preference for Tinybird experience). In this role, you will take ownership of analytics related to billing and payments: constructing and refining datasets and queries, defining key billing metrics, and producing dashboards that our product, finance, and operations teams depend on daily.Key ResponsibilitiesDevelop and sustain data pipelines using Tinybird and ClickHouse to enhance dashboards and enable self-service analytics.Enhance ClickHouse queries to ensure optimal performance and accuracy.Create and uphold primary billing metrics including gross/net revenue, refunds, chargeback rates, dispute rates, approval rates, churn, LTV, MRR/ARR, and cohort retention.Design and refine dashboards and visualizations for internal stakeholders including Billing, Finance, Product, Support, and Risk teams.Analyze anomalies and data-quality issues (such as spikes in refunds, increasing dispute rates, or drops in approval rates), conducting root-cause analysis and recommending corrective actions.Collaborate with engineering teams on data instrumentation and event tracking to ensure the integrity of billing data.Document logical processes (including metric definitions, table structures, and pipeline operations) and implement quality assurance measures (tests/monitoring).QualificationsMandatory strong experience in subscription billing, encompassing payments, renewals, refunds, and disputes/chargebacks.Advanced knowledge of SQL, including complex joins, window functions, incremental logic, and performance-oriented query writing.Hands-on experience with ClickHouse, focusing on query optimization and data modeling for analytics tasks.Experience in building fundamental ETL/ELT pipelines (scheduling, incremental loads, validation, monitoring).Familiarity with Git workflows (pull requests, code reviews, version control of SQL/data logic).
Join Kyivstar as a Senior Financial Planning & Reporting Specialist (FP&A) where you will play a pivotal role in shaping our financial strategies. You will be responsible for developing comprehensive financial models, conducting variance analysis, and preparing detailed reports to support our business objectives. Your expertise will be essential in guiding decision-making processes and enhancing our financial performance.
Join Kyivstar as a Senior Treasury Operations Advisor, where you will play a vital role in managing and optimizing international treasury operations. You will be responsible for enhancing our cash management strategies, ensuring compliance with international regulations, and implementing best practices in treasury management.This position is ideal for professionals seeking to leverage their expertise in treasury operations within a dynamic and innovative environment.
Join Simulmedia, a pioneering company in data-driven advertising, where we leverage cutting-edge analytics and machine learning to enhance ad placements and campaign efficiency. Our goal is to transform the advertising landscape, empowering brands to connect with their audiences more effectively.Job Overview:We are on the lookout for a passionate and skilled Senior Data Scientist to become an integral part of our innovative team. The ideal candidate will possess extensive knowledge in supervised learning, reinforcement learning, and optimization methodologies. You will be instrumental in crafting and deploying sophisticated machine learning models, generating actionable insights, and refining our advertising strategies.This position is based in Ukraine, with a primarily remote work setup and occasional in-person meetings in our offices located in Kyiv or Lviv.Core Responsibilities:● Develop and implement state-of-the-art supervised and reinforcement learning models to enhance ad targeting and boost campaign outcomes.● Collaborate with interdisciplinary teams to pinpoint opportunities for applying machine learning and optimization strategies to address business challenges.● Engage in comprehensive data analysis and feature engineering to prepare datasets for machine learning endeavors.● Utilize optimization algorithms to maximize the impact and efficiency of advertising campaigns.● Assess and enhance existing models to improve their accuracy, efficiency, and scalability.● Leverage statistical methods and machine learning techniques to analyze large, complex datasets.● Effectively communicate findings and recommendations to both technical and non-technical audiences.● Stay abreast of the latest developments in machine learning, reinforcement learning, and optimization practices.● Collaborate with engineering teams to integrate models into production systems.
Join SKELAR, a pioneering Ukrainian venture builder committed to crafting international tech businesses. Working alongside our co-founders, we assemble talented teams aimed at achieving victory in global markets.Currently, SKELAR boasts a diverse portfolio of businesses across various sectors such as EdTech and marketplaces. Our startups are consistently recognized among Ukraine's top startups and product companies, achieving high rankings in the PlayStore and developing platforms utilized by millions. Our businesses have been featured in renowned media outlets like TechCrunch and Wired.We take pride in a robust team of over 1,000 experts with exceptional expertise and ambitious goals. Our people are our most valuable asset, and we strive to build businesses with the finest talents available in the market.We are currently seeking a Strong Middle/Senior Android Developer.PawChamp is a mobile application and online platform designed for pet parents—dog owners—providing them with resources to train their pets and learn more about dog care through 24/7 expert chats, our AI companion Pawchie, and educational materials developed with canine professionals. We deliver personalized daily lessons covering all aspects of dog training from basic commands to behavioral problem-solving. Our strategic goal is to become a leader in the global online dog training market, catering to all needs of pet parents and their dogs beyond just training.Recognized as Product of the Day on Product Hunt in October 2025.PlayStore rating: 4.2Intro video about the product: Watch hereChallenges awaiting you:- Support and enhance existing functionality; - Implement new features while adhering to agreed architectural approaches; - Ensure product stability and high quality through Unit and Integration testing; - Collaborate closely with a cross-functional team: from discussing logic with the Product Owner to aligning contracts with Backend and refining UI/UX with designers; - Involve in task decomposition, estimation, and collaborative sprint planning; - Actively influence improvements in workflows, technology stack selection, and development approaches within the team;What we value:Must have:4+ years of experience in Android development...
Join Our TeamOpenBet is a premier global provider of betting and gaming entertainment, collaborating with over 200 partners to deliver unforgettable winning moments for millions of players globally. We are at the forefront of the industry, processing bets during major events such as the FIFA World Cup and Super Bowl. Our commitment to innovation allows us to continuously enhance player experiences through high-quality content and advanced technology.With more than 25 years of experience, our robust platform supports the most recognized betting brands, ensuring exceptional performance with 100% uptime, extensive scalability, and rapid responsiveness. With 85 licenses and a team of over 1,200 experts across 14 countries, we stand as a pillar in the gaming sector.Your MissionOpenBet Leap Gaming is on the lookout for a talented Senior QA Analyst to bolster our gaming development team.At OpenBet, you will receive comprehensive support and training to foster your career growth, underpinned by a strong culture of internal promotion for proactive and self-driven individuals.As part of Leap Gaming, a dedicated developer of premium gaming applications, this role aims to enhance our corporate business and elevate client satisfaction. Become part of an innovative team within a rapidly expanding organization that champions independence, flexibility, and personal development.Key Responsibilities:Conduct game testing aligned with specifications, scripts, and design.Perform static testing of documentation and specifications.Create and execute test cases.Work collaboratively with internal teams (developers, designers, product managers, and game producers) to clarify game requirements.Report bugs and verify bug fixes.Provide test status updates.Execute smoke, integration, and regression testing following production releases or hotfixes.Qualifications:Minimum of 4 years of professional experience in manual QA, preferably in the gambling sector.Deep understanding of software testing principles.Proficient in developing and maintaining testing documentation (test cases, bug reports, test plans).Experience in developing and analyzing test documentation and requirements clarification.Hands-on experience in RESTful API testing (Postman, Chrome DevTools, etc.).Familiarity with client-server architecture.Proficiency in JIRA, Confluence, and TestRail.Strong attention to detail with the ability to promptly identify UI/UX defects.Ability to comprehend game flow and identify functional defects.
Role overview Sigma Software Group is hiring a Senior Business Analyst in Kyiv to focus on AI-driven solutions. This role connects business priorities with technology, supporting projects that apply artificial intelligence to address client needs. What you will do Collaborate with cross-functional teams to gather and document business requirements for AI projects Translate complex business objectives into clear, actionable insights for technical teams Contribute to the direction and impact of AI initiatives, with the goal of improving efficiency and client results
Join Our Team!At Ruby Labs, we are at the forefront of technology, developing groundbreaking consumer products across various sectors including health, education, and entertainment. Our dynamic teams are passionate about shaping the future of consumer-driven solutions. If you are eager to make a difference, explore more about us at: https://rubylabs.com/about-us/The OpportunityWe are seeking a Senior User Acquisition Manager to lead our paid acquisition initiatives on Meta and TikTok, focusing specifically on our subscription-based offerings. This hands-on role emphasizes performance, experimentation, and scalable growth.You will have the chance to build, optimize, and expand our acquisition systems in collaboration with our creative, product, and analytics teams. The ideal candidate will possess a blend of strong execution capabilities and strategic insight, thriving in a fast-paced environment where agility and ownership are key.Key ResponsibilitiesPerformance and ScalingLead and expand paid acquisition efforts on Meta and TikTokPersistently enhance key performance metrics (CPA, ROAS, ROMI)Spot and scale successful campaigns while ensuring efficiencyCampaign Management and OptimizationDesign and oversee campaign structures that align with scaling objectivesContinuously test and refine creative assetsConduct structured A/B testing with defined hypotheses and learning objectivesData Analysis and Decision-MakingEvaluate performance across the entire marketing funnelIdentify bottlenecks and opportunities for growthConvert data into actionable insights and decisionsUtilize attribution models and grasp platform-specific nuances (e.g., iOS 14+)Creative CollaborationWork closely with creative teams to produce high-impact advertisementsProvide data-driven feedback on creative strategies, angles, and messaging
Команда Kyivstar.Tech шукає талановитого інженера технічної підтримки L2/L3, який бажає приєднатися до нашої динамічної команди.Про нас:Kyivstar.Tech – це провідна українська гібридна ІТ-компанія, що є частиною Дія.City та дочірньою компанією одного з найбільших операторів зв'язку в Україні, Київстар.Наша місія полягає в тому, щоб трансформувати життя в Україні та за її межами, створюючи інноваційні технологічні рішення, які відповідають потребам бізнесу та користувачів.З понад 500 спеціалістами в нашій команді, ми активно працюємо в таких сферах, як мобільні і веб-рішення, проєктування, розробка, підтримка та технічне обслуговування високопродуктивних систем та сервісів.Ми віримо в інновації, які справді змінюють світ, і постійно прагнемо кинути виклик традиційним підходам. Кожен наш співробітник є частиною підприємницької культури, що стимулює постійний розвиток та креативність.
Kiss My Apps is a dynamic platform company that integrates seven product verticals and over 30 AI-first products, serving more than 100 million users through its own ecosystem of analytical, payment, and marketing solutions.Our products, including AI Remodel, Printer, Botan, and Calorie Counter, are global leaders in the utilities, lifestyle, and health & fitness niches. They consistently rank among the top positions in the App Store, addressing the needs of a community of hundreds of millions.Our rapid growth trajectory is our competitive advantage; KMA is expanding at a rate of at least 3 times year over year. We are seeking a Director of Analytics Platform to help us scale even faster.About the Role:You will lead the construction and development of our analytics platform as an internal product, equipped with all the capabilities for scaling, innovating, and influencing key business decisions.This role involves building a centralized analytics system that will serve as a single source of truth for all management levels within the company. Your leadership will enable the transformation of analytics into a strategic growth driver, with potential pathways to advance to Chief Analytics Officer, including available options.Your Responsibilities:Oversee all analytics functions within the company (product, marketing, finance, operations) and unify them under a cohesive strategy.Integrate data engineering into the analytics framework:Define strategic priorities for analytics development: automation, AI models, forecasting, credit models.Ensure strategic involvement of analytics in financial planning, P&L management, and decision-making processes.Develop department leaders (Data Leads) into autonomous leaders focused on business outcomes.What We Expect from You:A strong background in analytics coupled with experience managing data engineering/BI architecture.Experience in building analytical products/platforms.Understanding of data warehouse architecture, ETL processes, orchestration, and governance principles.Practical experience in strategic management of analytics teams with 20+ members.Knowledge of financial models (P&L, ROMI, Gross Margin) and systemic planning.Strategic mindset with the ability to translate business vision into an analytics strategy.
Quantum Systems is at the forefront of pioneering unmanned solutions that revolutionize operations across air, land, and sea. Our innovative systems, ranging from advanced aerial drones to robust underwater and ground platforms, integrate state-of-the-art hardware with AI-enhanced software, ensuring seamless control and real-time data insights. With a commitment to excellence, we serve a diverse array of clients in defense, security, and the public sector worldwide, consistently redefining mission versatility and operational performance.Since 2022, we have proudly supported Ukraine with our local office.As an IT Support Specialist, you will play a crucial role in maintaining the stability and security of our network environment, ensuring our technological infrastructure operates at peak performance.This is a full-time office position. Candidates must be based in Kyiv.Your Daily Responsibilities:Develop and manage wired and wireless networks while guaranteeing network security.Configure essential network IP services including DNS, DHCP, SMTP, SSH, and FTP.Set up and oversee network protocols and technologies such as TCP/IP, VPN (IPsec, SSL), BGP, OSPF, EIGRP, NAT, Port-security, QoS, VLAN, and STP.Support and configure network equipment from leading brands such as MikroTik, Ubiquiti, Cisco, and FortiNet.Implement and maintain video surveillance systems from manufacturers like Hanwha, Dahua, and Hikvision.Manage firewalls and IDS/IPS systems to enhance security.Provide user support through remote access tools like RDP, TeamViewer, and Anydesk.Monitor and analyze network traffic using specialized analytical tools.
Quantum Systems GmbH develops unmanned solutions for air, land, and sea operations, combining advanced hardware with AI-driven software. The company delivers real-time data and precise control to defense, security, and public sector clients worldwide. Since establishing the Kyiv office in 2022, Quantum Systems has remained committed to supporting Ukraine. Role overview The Service Team Lead manages the Kyiv-based service team, focusing on high-quality repairs, process improvements, and the professional growth of engineers. This is a full-time, on-site position based in Kyiv. Main responsibilities Team leadership Direct and coordinate a team of service engineers and testers. Plan workloads, assign tasks, and set priorities to improve productivity. Mentor, onboard, and guide engineers in their development. Lead technical discussions and review complex cases to find solutions. Quality assurance Ensure all repairs and testing meet company standards. Monitor deadlines, SLAs, and overall service quality. Analyze recurring technical issues and drive improvements to reduce defects. Review and validate complex repairs involving electronics, UAVs, and modules. Process improvement Streamline workflows and introduce industry best practices. Maintain and update checklists, procedures, and technical documentation. Collaborate with Testing, Logistics, Procurement, and R&D teams. Track performance metrics and prepare reports on key KPIs. Technical involvement Help resolve complex engineering challenges as they arise. Make technical decisions in non-routine situations. Oversee repairs of UAVs, electronic modules, and power systems. Location: This position requires full-time, on-site presence at the Kyiv office.
Join our dynamic team at Kyivstar as a DevOps/MLOps Engineer, specializing in Machine Learning and Large Language Model infrastructure. This role is perfect for innovative professionals eager to elevate our cloud-based systems and enhance machine learning capabilities.
Join Ajax Systems, a leading international technology company and the largest manufacturer of security systems in Europe. With over 4.5 million end-users and 330,000 PRO users across more than 180 countries, Ajax is trusted for comprehensive security solutions for residential and commercial properties of all sizes. Our portfolio includes 280 devices designed for intrusion protection, video surveillance, fire safety, comfort, and automation. We experience exponential growth each year, both in team size and user base globally.The R&D department at Ajax encompasses four divisions: System, Device, Automation, and QA.The Device Department is focused on developing devices for security and automation, tackling significant challenges such as:- Low-Power: Ensuring devices operate efficiently for extended periods on standard batteries;- Cost-Effectiveness: Maintaining products within an affordable price range;- Design for Manufacturing (DFM) and Design for Human (DFH): Ensuring that schematics, casings, and elements can be easily replicated in mass production without compromising quality.Our development primarily utilizes STM32 (alongside other MCUs and SoCs) with Embedded C, and we have built a strong team of talented individuals, including Hardware and Embedded C engineers, industrial designers, and mechanical engineers.
Join our dynamic team at SKELAR! As a prominent Ukrainian venture builder, we focus on creating international tech businesses. Together with our co-founders, we assemble strong teams to succeed in global markets.Currently, SKELAR operates a myriad of businesses across various niches, including EdTech and marketplaces. Our companies consistently rank among the top startups and product companies in Ukraine, achieving high standings in the AppStore and developing platforms utilized by millions. Our ventures have been featured in leading media outlets such as TechCrunch and Wired.We take pride in our robust team of over 1000 specialists, who possess exceptional expertise and ambitious goals. Our people are the most valuable asset of our company, and we strive to build our businesses alongside the best talents in the market.We are currently seeking a Mid-Level DevOps/System Administrator to join our business unit Relatio.Relatio is a tech company focused on developing products that enhance romantic relationships. Our application assists users worldwide in building harmonious and healthy partnerships through self-improvement. Within the Growth function, we are actively expanding our R&D initiatives in related areas.Since launching in the summer of 2023, we have achieved significant success, establishing a viable unit economy and actively scaling towards becoming a large company. Every new employee has the chance to become a leader in their field; it is entirely dependent on your initiative and ambition.Challenges You Will Face:Support and enhance the company's hybrid infrastructure: Google Cloud, Proxmox VE, Linux servers, and internal services.Ensure the stable operation of servers and systems: monitoring, alerting, backup, recovery, and participation in incident resolution.Improve CI/CD processes and automate routine technical tasks.Support Atlassian products: Jira, Bitbucket, Confluence.Assist employees with technical issues: VPN, access, accounts, internal services.Organize and automate access management processes through roles, groups, policies, and relevant tools.Document infrastructure, services, and key technical processes.What We Value:
Role overview Speechify is seeking a Tech Lead to guide the Android Core Product team based in Kharkiv, Ukraine. This position sets the technical direction for the team and plays a key part in shaping how users experience Speechify on Android devices. The Tech Lead partners with colleagues from various disciplines to deliver new features and ongoing improvem…
About Resorcer.com Resorcer.com is a Ukrainian engineering company working as part of an international engineering and manufacturing group. The Kyiv office serves as a key hub for daily operations and collaboration with global partners. Role Overview The Business Assistant / Office Manager will support executive leadership, oversee office operations, and coordinate activities across departments. This position is central to keeping the Kyiv office organized and responsive to both local and international needs. Main Responsibilities Provide executive assistance to senior management Manage daily office operations and supplies Coordinate internal processes and administrative workflows Facilitate communication between Kyiv staff and global stakeholders Support operational efficiency across teams What We Look For Strong communication skills Attention to detail and organizational ability Experience handling multiple priorities Comfort working in a high-stakes environment Ability to collaborate with both local and international colleagues Location and Schedule This is a full-time, on-site role based in downtown Kyiv.
Role Overview Skelar is looking for a Technical SEO Specialist to help improve online visibility and search engine rankings. This fully remote position is open to candidates based in Ukraine. What You Will Do Implement SEO strategies that support organic growth goals Optimize website performance for search engines Conduct detailed analysis to identify opportunities for increased organic traffic Collaborate with the digital marketing team to align SEO efforts with broader campaigns Location Remote within Ukraine
Data Scientist (Speech)Join Kyivstar as we lead the charge in our AI transformation strategy, harnessing state-of-the-art Machine Learning and Speech technologies to revolutionize our internal operations and enhance day-to-day tasks. Our commitment extends beyond our organization as we empower partners and clients to maximize their benefits from these groundbreaking technologies.
Skelar is a pioneering Ukrainian venture builder dedicated to developing international tech businesses. Together with our co-founders, we assemble strong teams to excel in global markets.Currently, Skelar boasts numerous businesses across various niches—from EdTech to marketplaces. Our ventures consistently rank among the top startups and product companies in Ukraine, achieving high rankings in the App Store and developing platforms utilized by millions. Our businesses have been featured in leading media outlets like TechCrunch and Wired.We take pride in our robust team of over 1000 specialists, all possessing exceptional expertise and ambitious goals. Our people are our most valuable asset, and we strive to build businesses alongside the top talents in the market.We are excited to announce the launch of a new product and are on the lookout for a Senior User Acquisition Manager to lead our Meta Ads strategy (initially web2web, followed by web2app).We are seeking not just an executor, but a future leader who is eager to build this direction from the ground up, with the potential to become a manager for three exceptional User Acquisition Managers (each with their own source) within 6-8 months. This is an opportunity to develop a strategy from scratch and acquire the necessary resources for large-scale experiments that leverage accumulated experience into business results.Key Challenges Ahead:Establishing infrastructure for launching paid Meta traffic (and other channels) as part of the new business launch with web2web and web2app acquisition;Launching the first Meta Ads traffic for the product and collaborating with the product marketing and creative teams to find the unit economics;Building a system for stable and continuous testing of marketing hypotheses to find the product-market fit in priority markets;Becoming a mentor for the current User Acquisition team, providing practical experience and enhancing their performance;What We Value:3+ years of experience with Meta Ads in B2C SaaS products (practical experience with Google Ads and TikTok Ads is a plus);Successful track record of managing advertising budgets (from $500,000/month);Data-driven approach to hypothesis validation, always tracking metrics during launches;Appreciation for unconventional approaches, particularly regarding tests and intriguing cases;Initiative and a desire to grow quickly into a people manager role;Intermediate English proficiency (B1+);
About UsAt Ruby Labs, we are a premier technology organization dedicated to developing and managing cutting-edge consumer products. Our company thrives on innovation and offers a wide array of opportunities across the health, education, and entertainment sectors. Our dynamic teams are at the forefront of creating consumer-centric solutions, and we are continually seeking enthusiastic individuals to join our mission. Discover more about our journey at: https://rubylabs.com/about-us/About the RoleWe are in search of a seasoned Senior Data Analyst or Lead Data Analyst with extensive expertise in subscription billing analytics and robust technical proficiency in ClickHouse (with a preference for Tinybird experience). In this role, you will take ownership of analytics related to billing and payments: constructing and refining datasets and queries, defining key billing metrics, and producing dashboards that our product, finance, and operations teams depend on daily.Key ResponsibilitiesDevelop and sustain data pipelines using Tinybird and ClickHouse to enhance dashboards and enable self-service analytics.Enhance ClickHouse queries to ensure optimal performance and accuracy.Create and uphold primary billing metrics including gross/net revenue, refunds, chargeback rates, dispute rates, approval rates, churn, LTV, MRR/ARR, and cohort retention.Design and refine dashboards and visualizations for internal stakeholders including Billing, Finance, Product, Support, and Risk teams.Analyze anomalies and data-quality issues (such as spikes in refunds, increasing dispute rates, or drops in approval rates), conducting root-cause analysis and recommending corrective actions.Collaborate with engineering teams on data instrumentation and event tracking to ensure the integrity of billing data.Document logical processes (including metric definitions, table structures, and pipeline operations) and implement quality assurance measures (tests/monitoring).QualificationsMandatory strong experience in subscription billing, encompassing payments, renewals, refunds, and disputes/chargebacks.Advanced knowledge of SQL, including complex joins, window functions, incremental logic, and performance-oriented query writing.Hands-on experience with ClickHouse, focusing on query optimization and data modeling for analytics tasks.Experience in building fundamental ETL/ELT pipelines (scheduling, incremental loads, validation, monitoring).Familiarity with Git workflows (pull requests, code reviews, version control of SQL/data logic).
Join Kyivstar as a Senior Financial Planning & Reporting Specialist (FP&A) where you will play a pivotal role in shaping our financial strategies. You will be responsible for developing comprehensive financial models, conducting variance analysis, and preparing detailed reports to support our business objectives. Your expertise will be essential in guiding decision-making processes and enhancing our financial performance.
Join Kyivstar as a Senior Treasury Operations Advisor, where you will play a vital role in managing and optimizing international treasury operations. You will be responsible for enhancing our cash management strategies, ensuring compliance with international regulations, and implementing best practices in treasury management.This position is ideal for professionals seeking to leverage their expertise in treasury operations within a dynamic and innovative environment.
Join Simulmedia, a pioneering company in data-driven advertising, where we leverage cutting-edge analytics and machine learning to enhance ad placements and campaign efficiency. Our goal is to transform the advertising landscape, empowering brands to connect with their audiences more effectively.Job Overview:We are on the lookout for a passionate and skilled Senior Data Scientist to become an integral part of our innovative team. The ideal candidate will possess extensive knowledge in supervised learning, reinforcement learning, and optimization methodologies. You will be instrumental in crafting and deploying sophisticated machine learning models, generating actionable insights, and refining our advertising strategies.This position is based in Ukraine, with a primarily remote work setup and occasional in-person meetings in our offices located in Kyiv or Lviv.Core Responsibilities:● Develop and implement state-of-the-art supervised and reinforcement learning models to enhance ad targeting and boost campaign outcomes.● Collaborate with interdisciplinary teams to pinpoint opportunities for applying machine learning and optimization strategies to address business challenges.● Engage in comprehensive data analysis and feature engineering to prepare datasets for machine learning endeavors.● Utilize optimization algorithms to maximize the impact and efficiency of advertising campaigns.● Assess and enhance existing models to improve their accuracy, efficiency, and scalability.● Leverage statistical methods and machine learning techniques to analyze large, complex datasets.● Effectively communicate findings and recommendations to both technical and non-technical audiences.● Stay abreast of the latest developments in machine learning, reinforcement learning, and optimization practices.● Collaborate with engineering teams to integrate models into production systems.
Join SKELAR, a pioneering Ukrainian venture builder committed to crafting international tech businesses. Working alongside our co-founders, we assemble talented teams aimed at achieving victory in global markets.Currently, SKELAR boasts a diverse portfolio of businesses across various sectors such as EdTech and marketplaces. Our startups are consistently recognized among Ukraine's top startups and product companies, achieving high rankings in the PlayStore and developing platforms utilized by millions. Our businesses have been featured in renowned media outlets like TechCrunch and Wired.We take pride in a robust team of over 1,000 experts with exceptional expertise and ambitious goals. Our people are our most valuable asset, and we strive to build businesses with the finest talents available in the market.We are currently seeking a Strong Middle/Senior Android Developer.PawChamp is a mobile application and online platform designed for pet parents—dog owners—providing them with resources to train their pets and learn more about dog care through 24/7 expert chats, our AI companion Pawchie, and educational materials developed with canine professionals. We deliver personalized daily lessons covering all aspects of dog training from basic commands to behavioral problem-solving. Our strategic goal is to become a leader in the global online dog training market, catering to all needs of pet parents and their dogs beyond just training.Recognized as Product of the Day on Product Hunt in October 2025.PlayStore rating: 4.2Intro video about the product: Watch hereChallenges awaiting you:- Support and enhance existing functionality; - Implement new features while adhering to agreed architectural approaches; - Ensure product stability and high quality through Unit and Integration testing; - Collaborate closely with a cross-functional team: from discussing logic with the Product Owner to aligning contracts with Backend and refining UI/UX with designers; - Involve in task decomposition, estimation, and collaborative sprint planning; - Actively influence improvements in workflows, technology stack selection, and development approaches within the team;What we value:Must have:4+ years of experience in Android development...
Join Our TeamOpenBet is a premier global provider of betting and gaming entertainment, collaborating with over 200 partners to deliver unforgettable winning moments for millions of players globally. We are at the forefront of the industry, processing bets during major events such as the FIFA World Cup and Super Bowl. Our commitment to innovation allows us to continuously enhance player experiences through high-quality content and advanced technology.With more than 25 years of experience, our robust platform supports the most recognized betting brands, ensuring exceptional performance with 100% uptime, extensive scalability, and rapid responsiveness. With 85 licenses and a team of over 1,200 experts across 14 countries, we stand as a pillar in the gaming sector.Your MissionOpenBet Leap Gaming is on the lookout for a talented Senior QA Analyst to bolster our gaming development team.At OpenBet, you will receive comprehensive support and training to foster your career growth, underpinned by a strong culture of internal promotion for proactive and self-driven individuals.As part of Leap Gaming, a dedicated developer of premium gaming applications, this role aims to enhance our corporate business and elevate client satisfaction. Become part of an innovative team within a rapidly expanding organization that champions independence, flexibility, and personal development.Key Responsibilities:Conduct game testing aligned with specifications, scripts, and design.Perform static testing of documentation and specifications.Create and execute test cases.Work collaboratively with internal teams (developers, designers, product managers, and game producers) to clarify game requirements.Report bugs and verify bug fixes.Provide test status updates.Execute smoke, integration, and regression testing following production releases or hotfixes.Qualifications:Minimum of 4 years of professional experience in manual QA, preferably in the gambling sector.Deep understanding of software testing principles.Proficient in developing and maintaining testing documentation (test cases, bug reports, test plans).Experience in developing and analyzing test documentation and requirements clarification.Hands-on experience in RESTful API testing (Postman, Chrome DevTools, etc.).Familiarity with client-server architecture.Proficiency in JIRA, Confluence, and TestRail.Strong attention to detail with the ability to promptly identify UI/UX defects.Ability to comprehend game flow and identify functional defects.
Role overview Sigma Software Group is hiring a Senior Business Analyst in Kyiv to focus on AI-driven solutions. This role connects business priorities with technology, supporting projects that apply artificial intelligence to address client needs. What you will do Collaborate with cross-functional teams to gather and document business requirements for AI projects Translate complex business objectives into clear, actionable insights for technical teams Contribute to the direction and impact of AI initiatives, with the goal of improving efficiency and client results
Join Our Team!At Ruby Labs, we are at the forefront of technology, developing groundbreaking consumer products across various sectors including health, education, and entertainment. Our dynamic teams are passionate about shaping the future of consumer-driven solutions. If you are eager to make a difference, explore more about us at: https://rubylabs.com/about-us/The OpportunityWe are seeking a Senior User Acquisition Manager to lead our paid acquisition initiatives on Meta and TikTok, focusing specifically on our subscription-based offerings. This hands-on role emphasizes performance, experimentation, and scalable growth.You will have the chance to build, optimize, and expand our acquisition systems in collaboration with our creative, product, and analytics teams. The ideal candidate will possess a blend of strong execution capabilities and strategic insight, thriving in a fast-paced environment where agility and ownership are key.Key ResponsibilitiesPerformance and ScalingLead and expand paid acquisition efforts on Meta and TikTokPersistently enhance key performance metrics (CPA, ROAS, ROMI)Spot and scale successful campaigns while ensuring efficiencyCampaign Management and OptimizationDesign and oversee campaign structures that align with scaling objectivesContinuously test and refine creative assetsConduct structured A/B testing with defined hypotheses and learning objectivesData Analysis and Decision-MakingEvaluate performance across the entire marketing funnelIdentify bottlenecks and opportunities for growthConvert data into actionable insights and decisionsUtilize attribution models and grasp platform-specific nuances (e.g., iOS 14+)Creative CollaborationWork closely with creative teams to produce high-impact advertisementsProvide data-driven feedback on creative strategies, angles, and messaging
Команда Kyivstar.Tech шукає талановитого інженера технічної підтримки L2/L3, який бажає приєднатися до нашої динамічної команди.Про нас:Kyivstar.Tech – це провідна українська гібридна ІТ-компанія, що є частиною Дія.City та дочірньою компанією одного з найбільших операторів зв'язку в Україні, Київстар.Наша місія полягає в тому, щоб трансформувати життя в Україні та за її межами, створюючи інноваційні технологічні рішення, які відповідають потребам бізнесу та користувачів.З понад 500 спеціалістами в нашій команді, ми активно працюємо в таких сферах, як мобільні і веб-рішення, проєктування, розробка, підтримка та технічне обслуговування високопродуктивних систем та сервісів.Ми віримо в інновації, які справді змінюють світ, і постійно прагнемо кинути виклик традиційним підходам. Кожен наш співробітник є частиною підприємницької культури, що стимулює постійний розвиток та креативність.
Kiss My Apps is a dynamic platform company that integrates seven product verticals and over 30 AI-first products, serving more than 100 million users through its own ecosystem of analytical, payment, and marketing solutions.Our products, including AI Remodel, Printer, Botan, and Calorie Counter, are global leaders in the utilities, lifestyle, and health & fitness niches. They consistently rank among the top positions in the App Store, addressing the needs of a community of hundreds of millions.Our rapid growth trajectory is our competitive advantage; KMA is expanding at a rate of at least 3 times year over year. We are seeking a Director of Analytics Platform to help us scale even faster.About the Role:You will lead the construction and development of our analytics platform as an internal product, equipped with all the capabilities for scaling, innovating, and influencing key business decisions.This role involves building a centralized analytics system that will serve as a single source of truth for all management levels within the company. Your leadership will enable the transformation of analytics into a strategic growth driver, with potential pathways to advance to Chief Analytics Officer, including available options.Your Responsibilities:Oversee all analytics functions within the company (product, marketing, finance, operations) and unify them under a cohesive strategy.Integrate data engineering into the analytics framework:Define strategic priorities for analytics development: automation, AI models, forecasting, credit models.Ensure strategic involvement of analytics in financial planning, P&L management, and decision-making processes.Develop department leaders (Data Leads) into autonomous leaders focused on business outcomes.What We Expect from You:A strong background in analytics coupled with experience managing data engineering/BI architecture.Experience in building analytical products/platforms.Understanding of data warehouse architecture, ETL processes, orchestration, and governance principles.Practical experience in strategic management of analytics teams with 20+ members.Knowledge of financial models (P&L, ROMI, Gross Margin) and systemic planning.Strategic mindset with the ability to translate business vision into an analytics strategy.
Quantum Systems is at the forefront of pioneering unmanned solutions that revolutionize operations across air, land, and sea. Our innovative systems, ranging from advanced aerial drones to robust underwater and ground platforms, integrate state-of-the-art hardware with AI-enhanced software, ensuring seamless control and real-time data insights. With a commitment to excellence, we serve a diverse array of clients in defense, security, and the public sector worldwide, consistently redefining mission versatility and operational performance.Since 2022, we have proudly supported Ukraine with our local office.As an IT Support Specialist, you will play a crucial role in maintaining the stability and security of our network environment, ensuring our technological infrastructure operates at peak performance.This is a full-time office position. Candidates must be based in Kyiv.Your Daily Responsibilities:Develop and manage wired and wireless networks while guaranteeing network security.Configure essential network IP services including DNS, DHCP, SMTP, SSH, and FTP.Set up and oversee network protocols and technologies such as TCP/IP, VPN (IPsec, SSL), BGP, OSPF, EIGRP, NAT, Port-security, QoS, VLAN, and STP.Support and configure network equipment from leading brands such as MikroTik, Ubiquiti, Cisco, and FortiNet.Implement and maintain video surveillance systems from manufacturers like Hanwha, Dahua, and Hikvision.Manage firewalls and IDS/IPS systems to enhance security.Provide user support through remote access tools like RDP, TeamViewer, and Anydesk.Monitor and analyze network traffic using specialized analytical tools.
Quantum Systems GmbH develops unmanned solutions for air, land, and sea operations, combining advanced hardware with AI-driven software. The company delivers real-time data and precise control to defense, security, and public sector clients worldwide. Since establishing the Kyiv office in 2022, Quantum Systems has remained committed to supporting Ukraine. Role overview The Service Team Lead manages the Kyiv-based service team, focusing on high-quality repairs, process improvements, and the professional growth of engineers. This is a full-time, on-site position based in Kyiv. Main responsibilities Team leadership Direct and coordinate a team of service engineers and testers. Plan workloads, assign tasks, and set priorities to improve productivity. Mentor, onboard, and guide engineers in their development. Lead technical discussions and review complex cases to find solutions. Quality assurance Ensure all repairs and testing meet company standards. Monitor deadlines, SLAs, and overall service quality. Analyze recurring technical issues and drive improvements to reduce defects. Review and validate complex repairs involving electronics, UAVs, and modules. Process improvement Streamline workflows and introduce industry best practices. Maintain and update checklists, procedures, and technical documentation. Collaborate with Testing, Logistics, Procurement, and R&D teams. Track performance metrics and prepare reports on key KPIs. Technical involvement Help resolve complex engineering challenges as they arise. Make technical decisions in non-routine situations. Oversee repairs of UAVs, electronic modules, and power systems. Location: This position requires full-time, on-site presence at the Kyiv office.
Join our dynamic team at Kyivstar as a DevOps/MLOps Engineer, specializing in Machine Learning and Large Language Model infrastructure. This role is perfect for innovative professionals eager to elevate our cloud-based systems and enhance machine learning capabilities.
Join Ajax Systems, a leading international technology company and the largest manufacturer of security systems in Europe. With over 4.5 million end-users and 330,000 PRO users across more than 180 countries, Ajax is trusted for comprehensive security solutions for residential and commercial properties of all sizes. Our portfolio includes 280 devices designed for intrusion protection, video surveillance, fire safety, comfort, and automation. We experience exponential growth each year, both in team size and user base globally.The R&D department at Ajax encompasses four divisions: System, Device, Automation, and QA.The Device Department is focused on developing devices for security and automation, tackling significant challenges such as:- Low-Power: Ensuring devices operate efficiently for extended periods on standard batteries;- Cost-Effectiveness: Maintaining products within an affordable price range;- Design for Manufacturing (DFM) and Design for Human (DFH): Ensuring that schematics, casings, and elements can be easily replicated in mass production without compromising quality.Our development primarily utilizes STM32 (alongside other MCUs and SoCs) with Embedded C, and we have built a strong team of talented individuals, including Hardware and Embedded C engineers, industrial designers, and mechanical engineers.
Join our dynamic team at SKELAR! As a prominent Ukrainian venture builder, we focus on creating international tech businesses. Together with our co-founders, we assemble strong teams to succeed in global markets.Currently, SKELAR operates a myriad of businesses across various niches, including EdTech and marketplaces. Our companies consistently rank among the top startups and product companies in Ukraine, achieving high standings in the AppStore and developing platforms utilized by millions. Our ventures have been featured in leading media outlets such as TechCrunch and Wired.We take pride in our robust team of over 1000 specialists, who possess exceptional expertise and ambitious goals. Our people are the most valuable asset of our company, and we strive to build our businesses alongside the best talents in the market.We are currently seeking a Mid-Level DevOps/System Administrator to join our business unit Relatio.Relatio is a tech company focused on developing products that enhance romantic relationships. Our application assists users worldwide in building harmonious and healthy partnerships through self-improvement. Within the Growth function, we are actively expanding our R&D initiatives in related areas.Since launching in the summer of 2023, we have achieved significant success, establishing a viable unit economy and actively scaling towards becoming a large company. Every new employee has the chance to become a leader in their field; it is entirely dependent on your initiative and ambition.Challenges You Will Face:Support and enhance the company's hybrid infrastructure: Google Cloud, Proxmox VE, Linux servers, and internal services.Ensure the stable operation of servers and systems: monitoring, alerting, backup, recovery, and participation in incident resolution.Improve CI/CD processes and automate routine technical tasks.Support Atlassian products: Jira, Bitbucket, Confluence.Assist employees with technical issues: VPN, access, accounts, internal services.Organize and automate access management processes through roles, groups, policies, and relevant tools.Document infrastructure, services, and key technical processes.What We Value:
