Backend Engineer at ARQ | Krakow

Join the ARQ TeamARQ is rapidly emerging as one of the world's leading fintech companies. Our mission is to revolutionize the way individuals manage their finances across borders by creating infrastructure that facilitates seamless value transfer. As we embark on this exciting journey, every new team member has the opportunity to shape the future of our prod…

Join ARQ as a Senior Platform EngineerARQ stands at the forefront of the fintech revolution, transforming how individuals manage their finances on a global scale. We are dedicated to creating seamless and innovative solutions that empower users to interact with money without borders. As one of the fastest-growing companies in our sector, we offer a thrilling opportunity for talented individuals to significantly impact our culture, product, and expansion.If you are passionate about tackling substantial challenges and aspire to be part of a world-class team, ARQ is the ideal place for you!Your RoleWe seek an exceptional, hands-on Senior Platform Engineer who approaches infrastructure development with a software engineering mindset. Our engineering ethos emphasizes fully type-safe, declarative, and testable infrastructure as code. We invite engineers who share our values to apply.The perfect candidate will exhibit a fervent passion for programming, possess extensive knowledge, and demonstrate the ability to delve into any technical area necessary to empower our product engineering team to deliver unparalleled financial management solutions.You will design and implement high-quality automated systems to manage a multitude of backend services and databases across various Kubernetes clusters, processing thousands of data jobs and CI/CD builds weekly. If this excites you, we want to hear from you!Key ResponsibilitiesDesign and implement a secure, highly available infrastructure that supports a modern, rapidly growing financial services firm.Facilitate the rapid deployment of new infrastructure for our product engineering team through the thoughtful creation of shared Infrastructure as Code libraries, CLI tools, and coding patterns.Identify and resolve infrastructure issues and opportunities in collaboration with the broader engineering team.Strategize and execute infrastructure change rollout techniques, continuously integrating best practices and security enhancements.Oversee multi-region infrastructure and deployments to ensure compliance with security and availability standards.Develop, maintain, and optimize high-volume CI infrastructure and reusable pipeline templates for a microservices architecture.Implement GitOps workflows for declarative application deployments.

Join the ARQ Team!At ARQ, we are revolutionizing the fintech landscape. Our aim is to transform global financial interactions, creating a seamless infrastructure for value transfer across borders. As we embark on this exciting journey, every new team member plays a crucial role in shaping our innovative products, company culture, and future growth. If you are passionate about tackling significant challenges and making a global impact while being part of a talented team, ARQ is the perfect place for you!Your RoleAs a Backend Engineer, you will be responsible for designing, developing, and maintaining robust backend systems that support our cutting-edge financial products. You'll work closely with a skilled team to craft solutions that promote financial inclusion and help users manage their finances more effectively.Key ResponsibilitiesFocus on developing new systems as well as enhancing existing ones.Engage in projects including building REST APIs, creating microservices, and evolving essential systems like card payments, treasury management, and cryptocurrency liquidity.Utilize Java 25 for backend development alongside a PostgreSQL database.Leverage Spring Boot to ensure quick and efficient delivery of solutions.Adopt a pragmatic approach to developing business logic, focusing on writing clean, maintainable code, and employing methodologies like TDD, DDD, and continuous integration and delivery.QualificationsA minimum of 5 years of experience in backend development with a strong command of Java.A Bachelor's degree or higher in Computer Science, Mathematics, Physics, or related engineering/science fields.A quick learner with a driven, results-oriented mindset and exceptional communication skills (fluent in English, both verbal and written).Proven experience in developing complex products utilized by millions in high-growth startup environments.

What We’re SeekingWe are in search of a Senior Android Engineer who is enthusiastic about crafting stunning, dependable, and high-performance applications that provide exceptional user experiences. As a hands-on engineer, you will contribute top-notch code and elevate the engineering standards within our team.Join our Core Product Team, where you will help enhance and expand the ARQ experience—from our premier Android application to new product launches such as Premium, Credit, and various other financial solutions on our roadmap.Key ResponsibilitiesDesign and develop outstanding Android applications that users adore and trust.Write clean, maintainable, and high-performance Kotlin code utilizing contemporary Android tools and frameworks.Work closely with Product, Design, and Backend teams to implement features from inception to completion.Influence the architecture and development of the Android app as it continues to grow.Take ownership of features from conception through to launch, ensuring quality, refinement, and performance.Assist in enhancing code quality, testing, and development best practices within the team.Required QualificationsOver 5 years of experience developing Android applications for large user bases.Deep understanding of Kotlin and the Android ecosystem (Jetpack, Coroutines, Compose, etc.).Proficient in architecture patterns (MVVM, MVI, Clean Architecture) and testing frameworks.A strong sense of ownership and meticulous attention to detail in creating user-facing products.A passion for superior UX and product quality.Experience in fast-paced environments, preferably in fintech or consumer tech startups.Why You’ll Love Working HereAttractive salary package.Equity options, allowing you to own a piece of what you create.Performance bonuses (equity options).Generous paid vacation.Access to cutting-edge tools and technologies.Collaborate with a world-class team that will challenge and enhance your skills.The chance to influence the future of the financial system.

Join Our Team as a Data AnalystAre you passionate about data and eager to uncover insights that drive business success? As a Data Analyst at ARQ, you will play a pivotal role in helping us analyze our business operations, understand customer behaviors, and drive informed decisions through strategic data analysis. Your analytical skills will allow you to discover patterns, build robust insights, and contribute to the future direction of our products and company.This position is ideal for an early-career analyst keen on developing their skills in a dynamic fintech environment where data informs every decision.Key ResponsibilitiesData Exploration & Analysis: Delve into user behaviors, performance metrics, and trends to identify driving factors behind changes.Opportunity Identification: Detect anomalies and spikes in data, assisting the team in uncovering their underlying causes.Reporting & Automation: Develop and maintain dashboards and automated reports for reliable data access.Decision Support: Convert analytical insights into actionable recommendations for product and operational enhancements.KPI Development: Assist in defining and refining key performance indicators that impact our business and customer experience.Documentation: Ensure all analyses, methodologies, and assumptions are well-documented and reproducible.Modeling & Experimentation: Participate in basic modeling tasks and structured experiments with guidance from senior analysts or data scientists.Continuous Development: Enhance your analytical skills and product understanding through real-world problem-solving and mentorship.Required Qualifications1–3 years of experience in analytics, data, or operations (internships included)Proficient in SQL for dataset querying and explorationStrong analytical curiosity and a structured approach to problem-solvingExcellent communication skills, capable of conveying insights effectivelyMotivated to automate repetitive tasks and enhance reporting workflowsGenuine interest in fintech, data-driven decision-making, and machine learning concepts(Bonus) Familiarity with Python for basic data manipulation

Join Our Team as a Backend EngineerAt dolarapp, we are seeking a skilled Backend Engineer to design, develop, and maintain robust backend systems that support our cutting-edge financial solutions. You'll work with a dynamic team dedicated to driving financial inclusion and revolutionizing how people manage their finances.Your Role & ResponsibilitiesEngage in greenfield development and the enhancement of existing systems.Develop REST APIs, engineer microservices, and improve critical business systems such as card payments, treasury management, transaction booking, and crypto liquidity.Utilize a technology stack centered around Java 25 with a Postgres database.Leverage Spring Boot for rapid and efficient delivery.Adopt a pragmatic approach to developing business logic with a focus on clean, maintainable code, using methodologies like TDD, DDD, and CI/CD.QualificationsA minimum of 5 years of experience in backend development, particularly with Java.Bachelor's Degree or higher in Computer Science, Mathematics, Physics, or related Engineering/Science fields.A quick learner with a driven attitude and excellent communication skills in English, both verbal and written.Proven experience in creating complex products used by millions in fast-paced startups.Why Work With Us?Attractive salary package.Sign-on stock options to share in the company’s success.Discretionary performance-related bonuses in the form of stock options.Paid annual leave.Ownership of the development process with a focus on customer impact.Access to the latest technologies.Collaborative team environment to foster skill development.

Enjoy Gaming develops live dealer shows and slot games for a global audience. The company values ownership, open communication, and honesty in every project and daily interaction. Role overview The Shift Engineer role is located in Krakow, Dolnośląskie, Poland. This position centers on ensuring that systems and equipment remain reliable and efficient during gaming operations. Collaboration with colleagues from different departments is key to maintaining safety and quality standards while supporting operational objectives. Main responsibilities Monitor and maintain equipment to ensure gaming sessions run without interruption. Respond promptly to technical issues that arise during assigned shifts. Work with other team members to troubleshoot and resolve equipment problems. Perform regular inspections and preventive maintenance tasks. Accurately document all maintenance and repair activities. Requirements Strong technical skills and a proactive approach to solving problems. Experience in a similar environment is helpful. An interest in gaming technology supports success in this position.

SKELAR is a cutting-edge venture builder from Ukraine, dedicated to developing innovative tech enterprises on a global scale. Our mission is to create robust teams that excel in competitive international markets.Currently, SKELAR supports over 15 businesses across diverse sectors, including EdTech, HealthTech, and more. Our startups are regularly recognized as top contenders in various rankings and have achieved notable success in the App Store, with platforms that serve millions worldwide. Our ventures have also gained recognition in prestigious international media such as TechCrunch and Wired.We pride ourselves on our team of over 1500 skilled professionals who are driven by strong expertise and ambitious aspirations. Our people are our greatest asset, and we are committed to collaborating with the best talent available.We are excited to announce an opening for an Infrastructure Software Engineer at Leaply — our ecosystem of digital and physical products aimed at fostering healthy habits and enhancing quality of life. We operate in key global markets including the US, Tier 1 regions in Europe, and beyond.Having initially launched as a web platform, we have since expanded into mobile applications focused on habit formation with a subscription-based revenue model.By 2025, our team had tripled in size, and we anticipate further growth, aiming to double our business in 2026 and establish ourselves as a leading global player in HealthTech.Our team is on its third entrepreneurial venture together, boasting successful exits and profound insights into our niche and target audience. We prioritize agility, transparency in communication, and setting ambitious targets.Key Responsibilities:— Join as the inaugural member of a new Platform team, taking full ownership of building the infrastructure from the ground up — encompassing everything from strategy development to execution, impacting all facets of the business;— Evolve our rapidly growing infrastructure into a mature, organized platform, establishing clear service maps, dependencies, and ownership areas;— Elevate our use of Terraform and Kubernetes, developing a modular Infrastructure as Code (IaC) architecture, standardizing deployments, and implementing autoscaling for predictable and reliable releases;— Create a comprehensive observability system that includes metrics, logs, traces, and alerting, enabling proactive monitoring of system health rather than reactive troubleshooting;— Enhance security practices encompassing access management, secrets handling, and protection against external threats, making security an integral component of the engineering culture.

Saily is changing how travelers access mobile data, removing the need for roaming fees and physical SIM cards. The platform delivers fast, secure connectivity in more than 200 destinations, serving millions of customers and supporting hundreds of thousands of travelers worldwide. The Senior iOS Engineer role at Saily in Krakow centers on building solutions that directly address customer needs, from initial concept through to production. The team works within an AI-native Product Engineering environment, where engineers have access to AI agents that automate routine tasks. This approach frees up time for deeper, more meaningful work and encourages everyone to suggest and implement improvements. How the team works Engineers handle the full cycle of product development, solving real customer problems. AI tools automate repetitive work, letting engineers focus on high-impact tasks. Continuous improvement is expected and supported, team members regularly propose and drive changes. Curiosity and sharing knowledge are valued parts of the culture. The main goal is to create a smooth, reliable experience for travelers using Saily. Culture and values Saily puts growth, contribution, and impact first. The company values autonomy and provides context and AI-powered tools so engineers can do their best work, rather than focusing on hierarchy or rigid processes.

Tripadvisor helps travelers find experiences, advice, and options for any journey. Through brands like Tripadvisor, Viator, and TheFork, the company supports millions in discovering places to stay, activities to try, and restaurants to visit. Its platforms connect a global audience with travel content, recommendations, and marketplaces for experiences, lodging, and dining. Role overview The Senior Engineering Manager will join the Tripadvisor Experiences team, known as Viator. Viator provides access to over 400,000 experiences worldwide, from guided city tours to outdoor excursions. The team focuses on making it easy and reliable for travelers to plan and book memorable activities. Location and contract This is a hybrid role based in Krakow. The position is offered as a permanent employment contract. B2B contracts are not available for this role.

About TripadvisorAt Tripadvisor, we believe in connecting travelers with experiences that are truly worth sharing. As a leading global platform, we are committed to becoming the most trusted source for travel guidance, enabling people to find the best accommodations, restaurants, and activities through our comprehensive range of brands including Tripadvisor, Viator, and TheFork.Our Experiences Engineering team, distributed across Europe, is pivotal in managing our platform and mobile applications, along with their supporting infrastructure. We create the systems that empower operators to enhance their businesses and facilitate third-party access to our diverse inventory. Our tools are designed to support our customer service teams in delivering exceptional service to travelers and operators around the globe.We are currently seeking a Software Engineer I to join our dynamic and expanding team. This position is available to candidates situated within a reasonable commuting distance (generally within 1.5 hours) of our Kraków office. We embrace a flexible work model that prioritizes remote work while also valuing essential in-person collaboration moments, including periodic gatherings at your nearest office for team engagement and planning.At Tripadvisor Experiences, we foster a friendly and enjoyable work environment focused on achieving results. Our engineers collaborate closely with product managers and designers throughout the entire software development lifecycle—from conceptual design to coding, testing, deployment, and beyond. Most of our engineers push code to production every few days, participating in a daily release cycle.Our engineers thrive on versatility, tackling a variety of technical challenges. This role has a backend focus, with opportunities to engage in frontend projects occasionally. While a willingness to learn is crucial, prior expertise in frontend development is not required; we provide training on that aspect during your onboarding process.The technologies we utilize include Java, React, TypeScript, GraphQL, Kubernetes, SQL, and NoSQL databases, all running on AWS infrastructure.

Kaseya delivers IT infrastructure and security management solutions to Managed Service Providers and internal IT teams around the world. Founded in 2000, the company operates in more than 20 countries and manages over 15 million endpoints across various industries. Backed by Insight Venture Partners, Kaseya continues to expand its global reach. More information is available at www.Kaseya.com. Role overview The networking products team in Krakow seeks a QA Automation Engineer (Python) who will focus on both automated and manual testing. The position centers on building and maintaining scalable test automation frameworks and collaborating with engineering teams to validate new features and improve product quality. What you will do Design, develop, and maintain automated test frameworks with Python, Pytest, and Playwright. Create reliable, reusable test scripts for web and API testing. Work closely with developers to validate new features and enhance functionality. Participate in design and requirements reviews to support testability and quality standards. Perform manual testing as needed for comprehensive QA coverage. Identify, document, and track defects through resolution. Develop and maintain test plans, test cases, and related documentation. Continuously improve testing processes, tools, and strategies. Ensure all QA activities align with company and industry best practices and compliance standards.

Are you passionate about creating powerful systems that enhance financial independence? Join DolarApp, a visionary startup dedicated to transforming access to dollar-based financial services throughout Latin America. As a Senior Python Engineer, you will architect, develop, and sustain scalable, secure, and high-performing backend systems that fuel our groundbreaking products. Collaborate with a skilled team to devise solutions that promote financial inclusion and revolutionize how individuals manage their finances. If you're eager to tackle intricate challenges and contribute significantly to a rapidly expanding company, we want to hear from you!What You'll Be DoingYou will be instrumental in developing the foundational infrastructure that supports our operations, including customer support bots and fincrime AI agents that will transform fintech operations.You will adopt a pragmatic approach to crafting our business logic, prioritizing clean code and maintainability, with a focus on rapid development through Test-Driven Development (TDD), Domain-Driven Design (DDD), and continuous integration and delivery.

Join our dynamic team at Kaseya as a DevOps Engineer specializing in AWS. In this role, you will be responsible for building, maintaining, and optimizing our cloud infrastructure, ensuring seamless deployment and continuous integration of our products. Collaborate with cross-functional teams to implement automation and monitoring solutions that enhance our operational efficiency.

Join Kaseya, a leading provider of IT management software, as a Software Engineer II specializing in Golang. In this dynamic role, you'll collaborate with a talented team to develop innovative software solutions that empower IT professionals globally. Your expertise in Golang will be crucial in enhancing our applications and ensuring the highest standards of quality and performance.

Join Saily, where we are revolutionizing mobile connectivity for travelers. Say goodbye to roaming fees and plastic SIM cards, and enjoy ultra-fast, secure mobile data across over 200 destinations. With millions of paying customers and hundreds of thousands of travelers engaging with Saily at any moment, we are dedicated to enhancing the travel experience.At Saily, we cultivate an AI-native Product Engineering culture. Here, every engineer is a builder, tasked with solving customer challenges from conception to deployment. Our AI agents handle repetitive coding tasks, empowering engineers to focus on impactful solutions. Every team member is encouraged to contribute ideas for improvement, ensuring that our focus remains on providing our customers with a seamless, connected journey.We prioritize growth over comfort, contributions over hierarchy, and impact over process. At Saily, we equip talented individuals with context, autonomy, and advanced AI tools to excel in their roles.

Saily, a division of Nord Security, seeks a Senior Automation QA Engineer based in Krakow. This role centers on raising application quality through automated testing methods. Collaboration is key. The Senior Automation QA Engineer will work with colleagues from various teams to uphold high quality standards and help ensure a dependable experience for users. Role overview Develop and maintain automation tests to improve software quality Work with cross-functional teams to identify and address quality issues Support a consistent and reliable user experience through rigorous testing Location This position is based in Krakow.

Hello! We are Liven, creating a global ecosystem of self-regulation products that empower individuals to disengage from emotional autopilot and cultivate healthier relationships with themselves.Within our ecosystem, you will find:Self-discovery companion — an application embraced by over 2.5 million users, offering a space for personal exploration through AI coaching, mood tracking, auditory practices, and bite-sized learning.Online Coaching — sessions with certified experts to navigate complex situations.Supplements — for physical recovery and bodily support.We are on a continuous expedition with ambitious plans to expand our ecosystem.Liven is a company for the curious. We are driven by curiosity — an intrinsic desire to ask questions, dig deeper, and not shy away from the unknown.Our passion lies in creating products and solutions that genuinely help. Our curiosity and experimental culture exist to discover better ways to support individuals on their self-discovery journey.Currently, we are seeking a Data Engineer / Analytics Engineer at Liven.In this role, you will be responsible for establishing a robust data foundation for the company, designing storage architecture, and delivering high-quality, ready-to-use data to analytics teams.Challenges you will face include:— Seamlessly providing analytics teams across various business domains (marketing, product, operations) with necessary data through stable integrations (using Airbyte and custom solutions);— Organizing long-term DWH architecture (developing data layers, modeling, ensuring data integrity);— Developing and optimizing our ELT processes and data transformations within BigQuery using Dataform, as well as implementing robust process orchestration (with plans to transition to Airflow/Astronomer);What is important to us:— Excellent SQL knowledge and a deep understanding of modern data warehouse concepts;— Practical experience with cloud data ecosystems (ideally GCP, BigQuery) and data transformation tools (Dataform/dbt);— Strong analytical skills and a proactive approach to problem-solving.

Join our innovative team at Nordsec as a Mid-Senior Backend Engineer specializing in Go. In this role, you will be responsible for designing and implementing robust backend solutions that drive our platform's performance and scalability. Collaborate with cross-functional teams to enhance our technology stack and deliver high-quality software solutions. Your expertise will contribute to our mission of providing secure and efficient digital services.

Join Tripadvisor as a Senior Application Support Engineer in the vibrant city of Krakow! In this role, you will be responsible for ensuring the smooth operation of our applications and systems, providing top-notch support to our clients and internal teams.As a key member of our engineering team, you will leverage your technical expertise to troubleshoot issues, optimize processes, and contribute to the overall success of our applications. If you are passionate about technology and enjoy solving complex problems, this position is for you!