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Experience Level
Senior
Qualifications
- Extensive experience in backend development with . NET framework.- Strong understanding of cloud services and server architecture.- Proven track record in handling high-load applications.- Ability to work independently in a remote setting and collaborate effectively with team members.
About the job
Join our innovative Game Development studio as a Senior Backend Developer specializing in . NET. We are seeking a seasoned professional who possesses a profound understanding of server architectures, real-time load handling, and cloud infrastructures. This position is ideal for an individual eager to build the backend for a new mobile game targeting Android and iOS platforms from the ground up, shaping the technological foundation of the product and making pivotal technical decisions.
About dzen
Dzen is a creative Game Development studio dedicated to crafting engaging gaming experiences. Our team thrives on innovation and collaboration, and we are passionate about pushing the boundaries of technology in the gaming industry.
Role Overview Kyivstar.Tech is looking for a Backend Developer (Java) to join its product team. This role centers on backend development for a range of projects, with the chance to shape how products evolve. The team values autonomy, welcomes new ideas, and supports professional growth. About Kyivstar.Tech Kyivstar.Tech, a subsidiary of Kyivstar and a Diia.C…
Join our dynamic team in Kyiv as a Lead Backend Developer, working full-time in our office. We offer a convenient shuttle service from the nearest metro station.About the RoleAs the Lead Backend Developer, you will play a pivotal role in our innovative ground control station team, enhancing the functionality and user experience of our VTOL systems. You will be at the forefront of drone technology, collaborating closely with stakeholders from the Flight Control, AI, and System Test departments to expand and improve our ground control software.Your contributions will support Quantum Systems' mission to revolutionize decision-making through aerial data intelligence.Your Daily Responsibilities:Design and implement new features for our cutting-edge ground control station software.Maintain and enhance existing ground control station software.Optimize user interface and user experience tailored for drone applications.Oversee testing procedures and conduct flight tests.
Join our innovative Game Development studio as a Senior Backend Developer specializing in .NET. We are seeking a seasoned professional who possesses a profound understanding of server architectures, real-time load handling, and cloud infrastructures. This position is ideal for an individual eager to build the backend for a new mobile game targeting Android and iOS platforms from the ground up, shaping the technological foundation of the product and making pivotal technical decisions.
SKELAR is a venture builder dedicated to creating international product-oriented IT companies following the principles of the venture capital world. Together with co-founders, we assemble strong teams to launch product-focused IT businesses and excel in global markets.Currently, we are in search of a Senior Backend Engineer for our partner company.This platform focuses on personal and spiritual growth, built on Christian values. We assist individuals in finding answers to life’s most significant questions: from a deeper understanding of faith to enhancing relationships through personalized plans. Our users have access to lessons, interactive quizzes, and video materials, creating a holistic learning experience.Our strategy is to become a global platform where tens of millions of Christians, hundreds of organizations, and thousands of mentors and pastors can interact.Key Achievements We Are Proud Of:Users love us: our average rating on App Store, Google Play, and Trustpilot is 4.7/5.We are rapidly growing: our team has increased fourfold in the last year.We are a partner of Meta, confirming the high level of our product and the trust of technological leaders.We are evolving at an incredible pace, providing every team member the opportunity to grow rapidly alongside the company—both professionally and personally. The company supports learning through mentoring, internal educational initiatives, and access to external courses.It is worth noting that we extensively integrate AI tools into all processes. We are already utilizing integrations with MCP servers in daily tools, AI Code Review, and automation of key routine tasks. This allows us to focus on creativity and innovation instead of routine tasks.
Important: This position requires relocation to our Milan office.About SatispaySatispay is on a mission to transform everyday payments, making them simple, equitable, and accessible for everyone. Our vision extends beyond the present as we strive to shape the future of financial transactions.We are a movement that empowers millions, united by a common goal to confront significant challenges. Our agile approach allows us to innovate rapidly, think creatively, and learn collaboratively as we push boundaries.If you seek to make a meaningful impact alongside a talented team, you have come to the right place.Key ResponsibilitiesAs a Senior Backend Software Engineer within the Business Team, you will significantly influence the future of digital welfare payments. Your responsibilities will encompass everything from employer benefits to sophisticated products, supporting the entire journey for both employers and employees to ensure lasting satisfaction. You will guide the technical direction, maintain quality, and ensure the timely delivery of complex systems that enable numerous employers to manage their corporate welfare efficiently. Here’s what you can expect in your daily tasks:Develop Multi-Service Solutions: Conduct thorough technical analyses for medium-to-large projects affecting various services in the Employer domain. Design comprehensive, highly available solutions, emphasizing scalability, security, and maintainability for products central to welfare.Guarantee Technical Quality: Implement strong testing strategies, balancing both automated and manual coverage while managing gradual rollouts with vigilant monitoring to ensure precise welfare distributions.Identify and Resolve Blockers: Proactively foresee and address technical obstacles, promoting knowledge sharing throughout the organization. Tackle the unique challenges posed by B2B registration workflows and high-volume benefit allocations while ensuring code quality through active reviews.Take Ownership: Own your projects from inception to completion, delivering features that genuinely address user needs—from the moment an employer signs up to when an employee utilizes their welfare benefits—through seamless and efficient back-end integration.
Role overview Wix Payments seeks a Backend Engineer based in Kyiv to strengthen the systems behind payment processing for Wix users. The focus is on backend development, supporting smooth and reliable transactions across the platform. What you will do Design, build, and maintain backend features for the Wix Payments platform Collaborate with colleagues from other teams to deliver dependable payment services Help improve the stability and efficiency of transaction processing Impact This role directly supports secure and seamless payment flows for Wix users. Enhancements made here will influence the reliability and performance of payment operations throughout the platform.
Join Our Team at IdealsIdeals is a renowned global B2B SaaS provider celebrated for being the most customer-focused brand in the secure business collaboration space. With over 2 million users across 300,000 companies worldwide, we empower organizations to manage high-stakes processes and make significant decisions with greater ease and efficiency.Ideals Virtual Data Room (VDR): Facilitating secure document sharing and collaboration for due diligence, fundraising, corporate reporting, licensing, clinical trials, and other intricate transactions.Ideals Board: A platform designed for board and leadership collaboration, ensuring faster, safer, and compliant decision-making.Your MissionWe are in search of a Backend Software Engineer (.NET) with AI skills who will be pivotal in developing and scaling our secure, high-load VDR services while also exploring the integration of AI patterns into our product features.Your success will be gauged by your strong backend fundamentals—reliability, performance, scalability, and maintainability—and your capability to implement AI features safely and efficiently using reusable, well-architected components.This role is hands-on within a mature product environment where engineering excellence, observability, and sustainable architecture are paramount.Key ResponsibilitiesBackend Engineering:Design, develop, and maintain high-quality production-grade .NET services.Utilize .NET Framework 4.7, .NET 8, ASP.NET, Web API, and Entity Framework.Create and refine data models with MS SQL Server and PostgreSQL.Deploy and manage services on AWS, leveraging Docker, Kubernetes, and ArgoCD.Ensure service reliability and performance through:Defining clear SLIs, SLOs, and capacity planning.Implementing caching, retries, backoff strategies, and circuit breakers.Establishing secure multi-tenant access control.Take ownership of services from design through implementation, deployment, monitoring, and support.
Innovecs is seeking talented Senior Backend Engineers (AI-Driven) to join our dynamic team, dedicated to enhancing our B2B and B2C warehouse management ecosystem. The ideal candidate will be an AI-Native Software Engineer, skilled in not only coding but also in orchestrating AI agents and assistants to optimize the Software Development Life Cycle (SDLC). You will play a pivotal role in delivering robust, scalable microservices at speeds that traditional development practices cannot achieve.
Join Skelar, a leading venture builder dedicated to crafting innovative IT products that resonate on a global scale.We are currently seeking a Senior/Lead Backend Engineer to spearhead our martech initiatives within our partner company, Duomo. This platform is designed for personal and spiritual development, rooted in Christian values, providing users with customized plans to address pivotal life questions.At Duomo, we strive to create a global community where millions of Christians, organizations, mentors, and pastors can connect and grow together.Our achievements speak volumes:Users love us: Our average ratings across App Store, Google Play, and Trustpilot stand at an impressive 4.7/5.Rapid growth: Over the past year, our team has expanded fourfold.Trusted by Meta: Our partnership with Meta underscores the quality and trustworthiness of our product.We are evolving rapidly, offering every team member the opportunity to grow both professionally and personally. Our commitment to learning includes mentorship, internal education initiatives, and access to external courses.Additionally, we are integrating AI tools throughout our processes, using MCP server integrations, AI Code Review, and automation to enhance creativity and innovation.
TENTENS Tech is a dynamic IT partner of SKELAR, a Ukrainian venture builder focused on creating international tech businesses.We design social discovery platforms catering to over 20 million users globally. Our rapid pace and scale are driven by deep expertise in analytics, high-load systems, and performance marketing.Our team at TENTENS Tech comprises over 250 professionals, where each member acts like a CEO in their role, contributing to our collective success. We operate with a 10/10ths mindset: we stay focused on our goals, ask the right questions along the way, and never settle for 'good enough'—only maximum performance and continuous improvement. If you resonate with this description and are ready to accelerate with us, let's connect!We are currently seeking a Backend Engineer (PHP) to elevate our performance standards together.
We invite you to join our dynamic team at Zeely AI as a Senior Node.js Developer. As part of our innovative team, you will contribute to developing cutting-edge products characterized by clean, efficient code, and audacious solutions. Your expertise will directly impact our stakeholders, influencing pivotal decisions and propelling product growth.Zeely AI harnesses the power of artificial intelligence to create viral user-generated content (UGC) videos and ad banners, facilitating effective advertising campaigns on platforms like Facebook and Instagram. Our mission is to help small businesses capture attention and achieve growth.With over 1 million users in the US, we proudly rank among the top three players in our market segment. Our product is robust and has experienced over 4x annual growth in the US. Our team consists of more than 130 dedicated professionals.As proud members of the Google for Startups Alumni community and official partners with Meta and TikTok, we have recently been recognized by Forbes as one of the Top 25 fastest-growing startups in Ukraine in 2024.
Innovecs provides digital services to clients across the US, UK, EU, Israel, Australia, and Ukraine. The company develops software for industries including supply chain, healthtech, collaboration technology, and gaming. Solutions are designed to meet each client’s changing business requirements. Innovecs has earned recognition for its growth and workplace culture. The company appeared on the Inc. 5000 list of fastest-growing private US companies for five consecutive years and is ranked among the top global outsourcing providers by IAOP. Additional honors include the Global Good Awards for Employee Engagement & Wellbeing, a gold award at the Employer Brand Management Awards, and a place in the Global Top 100 Inspiring Workplaces Ranking.
Job Overview:Join Pragmatike as we partner with a pioneering European deep-tech company dedicated to revolutionizing cloud computing. This firm is at the forefront of developing a decentralized and energy-efficient alternative to conventional cloud services, leveraging distributed bare-metal infrastructure and sophisticated automation to provide high-performance computing for contemporary workloads.We are looking for a Senior / Lead Backend Engineer with a focus on Go programming and extensive experience in production-grade peer-to-peer (P2P) systems. In this highly technical role, you will be instrumental in designing and enhancing the backend architecture of a decentralized cloud platform, collaborating with infrastructure, product, and DevOps teams. Autonomy, ownership, and sound architectural judgment are crucial for success in this position.
Join SKELAR, a pioneering venture builder committed to establishing international tech businesses. We partner with co-founders to assemble strong teams that excel in global markets.Currently, SKELAR manages a diverse portfolio of businesses across various sectors, from EdTech to marketplaces. Our ventures have been recognized as top startups and product companies in Ukraine, featuring prominently in AppStore rankings and creating platforms used by millions. Notable media outlets like TechCrunch and Wired have covered our businesses.We take pride in our robust team of over 1,000 specialists, each possessing exceptional expertise and ambitious goals. Our people are our greatest asset, and we strive to build businesses alongside the best talent available.We are currently seeking a Golang Backend Team Lead for PawChamp, a mobile application and online platform designed for dog owners. PawChamp enables pet parents to train their dogs and learn more about care and training through 24/7 chats with experts, the AI companion Pawchie, and educational materials developed in collaboration with dog trainers. Our aim is to provide personalized daily lessons covering all aspects of dog training, from basic commands to addressing behavioral issues. Our strategic goal is to become the leading player in the global online dog training market, fulfilling all needs of pet parents and their dogs beyond training.In October 2025, we earned the title of Product of the Day on Product Hunt.App Store rating: 4.8Intro video about the product: https://www.youtube.com/watch?v=D3vURwhmufgKey Challenges:Enhancing the backend for our mobile products and the PawChamp web platform.Leading, coordinating, and developing the backend development team.Collaborating with stakeholders.Ensuring high code quality and adherence to best development practices within the team.Interacting with adjacent teams to improve system component interaction and optimize processes.Enhancing code, architecture, services, and development approaches.What We Value:
TENTENS Tech, a partner IT company of SKELAR, is at the forefront of building international tech businesses from Ukraine.We create innovative social discovery platforms that serve over 20 million users globally. Our impressive pace and scale are fueled by deep expertise in analytics, high-load systems, and performance marketing.Our team at TENTENS Tech consists of over 250 professionals, each acting as a CEO in their role and contributing to our collective success. We operate with a 10/10ths mentality: we keep our sights on our goals, ask the right questions along the way, and never settle for 'good enough' — we strive for excellence and beyond. If you resonate with this mindset and are ready to accelerate with us, we want to meet you!We are currently seeking a Backend Team Lead to help elevate our standards of excellence.
TENTENS Tech is a partner IT company of SKELAR, a Ukrainian venture builder focused on creating international tech businesses.We develop social discovery platforms for over 20 million users worldwide, driven by deep expertise in analytics, high-load systems, and performance marketing.Our team at TENTENS Tech consists of over 250 professionals, each acting as a CEO in their role and contributing to collective success. We adhere to the 10/10ths philosophy: we stay focused on our goals, ask the right questions along the way, and never settle for "good"—we strive for excellence and beyond. If you resonate with this description and are ready to accelerate with us, let's connect!We are currently seeking a Backend Engineer (PHP/Go) to help elevate our performance standards.
SKELAR is a dynamic venture builder dedicated to creating international product IT companies guided by the principles of venture investing. Together with co-founders, we assemble strong teams to launch product-focused IT businesses and excel in global markets.We are currently seeking a Junior/Middle Backend Engineer to join our partner company.This platform is designed for personal and spiritual development, based on Christian values. We assist individuals in finding answers to life's most significant questions, from deepening their faith to enhancing relationships with loved ones through personalized plans. Our users gain access to lessons, interactive quizzes, and video materials that create a comprehensive learning experience.Our strategy is to become a global platform where tens of millions of Christians, hundreds of organizations, and thousands of mentors and pastors can interact.Key Achievements We Are Proud Of:Users love us: average ratings in the App Store, Google Play, and Trustpilot are 4.7/5.We are growing rapidly: our team has quadrupled in the past year.We partner with Meta, which affirms the high quality of our product and the trust of technology leaders.We are evolving at an incredible pace, and every team member has the opportunity to grow rapidly alongside the company, both professionally and personally. The company supports learning through mentoring, internal educational initiatives, and access to external courses.Notably, we extensively integrate AI tools into all processes. We already utilize integrations with MCP servers in everyday tools, AI Code Review, and automation of key routine tasks. This allows us to focus on creativity and innovation rather than routine.
SupportYourApp is an international Support-as-a-Service company that has been providing reliable technical and user support services for over 15 years, enhancing user experience for growing businesses. Our diverse team comprises more than 1,300 specialists from around the globe.We serve clients in over 60 languages, collaborating with industry leaders like MasterCard, Calm, and MacPaw. Our innovative products, including Quidget, aim to improve customer experiences daily.About the Role:We are looking for a Fullstack WordPress Developer fluent in Ukrainian to join our community. In this role, you will contribute to the development of our corporate website while closely collaborating with our marketing team and our Chief Marketing Officer to achieve ambitious marketing objectives.Sounds interesting? Here’s what you can expect! With us, you will:Develop and maintain a headless WordPress architecture;Optimize website performance, particularly for mobile;Implement lazy loading and partial rendering;Enhance Core Web Vitals and Lighthouse scores;Engage in technical SEO practices;Support external integrations (forms, webhooks, API);Ensure website security and stability;Support CI/CD processes;Participate in UX redesign and improvements from a technical perspective;Initiate architectural enhancements after 1-2 years, as appropriate.You are our ideal candidate if you have:At least 3 years of experience in PHP development;Intermediate+ English proficiency (B1+);Experience with WordPress (custom post types, hooks, REST API);Experience with a headless CMS approach;Strong knowledge of JavaScript (ES6+);Experience with Tailwind CSS and Webpack;Practical experience in performance optimization (Core Web Vitals, LCP, CLS, INP);Understanding of technical SEO (structured data, sitemap, canonical, crawlability);Experience with REST API integrations (HubSpot or similar);Knowledge of web security best practices (OWASP principles);Experience with Git and CI/CD;Experience in A/B testing to evaluate changes and optimize products;Able to work within Agile/Scrum processes and efficiently manage tasks in tracking systems;Ability to collaborate effectively between technical and marketing teams, translating business requirements into technical solutions;Goal-oriented and capable of delivering projects on time.
SKELAR is a prominent Ukrainian venture builder dedicated to developing international tech businesses. Together with our co-founders, we assemble strong teams poised to achieve success in global markets.Currently, SKELAR manages numerous businesses across various niches, from EdTech to marketplaces. Our companies consistently rank among Ukraine's top startups and product companies, achieving high positions in the App Store and developing platforms used by millions worldwide. Major media outlets, including TechCrunch and Wired, feature SKELAR's businesses.We take pride in our robust team of over 1,000 specialists, each bringing exceptional expertise and ambitious goals. Our people are our most valuable asset, and we aim to build businesses with the best talent available.Storyby is an entertainment tech company that transforms original ideas into captivating stories told through novels, vertical films, and immersive audiobooks. Over 10 million people globally engage with our content.In the Storyby ecosystem, we offer three key products:AlphaNovel – a platform for novels and immersive audiobooks featuring over 20,000 works.StorybyWriter – a publishing platform for more than 25,000 authors, bringing the strongest stories to life for DramaShorts.DramaShorts – a streaming service for vertical cinema with 1 million fans monthly, featuring in-house productions across Europe and the USA.We are currently expanding our team and looking for a Backend Engineer who will be a vital part of our team, helping the business grow and reach new heights.Your responsibilities will include:— Implementing and maintaining API endpoints for web and mobile: HTTP Cloud Functions, validation, OpenAPI/Swagger.— Optimizing performance: profiling, caching, and ensuring correct indexing for swift operation.— Ensuring quality and reliability: unit and integration testing (Jest), logging, tracing, alerts.— Conducting code reviews and upholding engineering standards in a monorepo (Nx, esbuild, CI).— Engaging in foundational infrastructure work using Terraform and participating in incident analysis.What we value:— You possess 3+ years of backend development experience with Node.js and TypeScript/JavaScript.— You have a strong understanding of SQL beyond basic SELECT queries, including indexing, profiling, and optimization.
SKELAR is a venture builder focused on creating international tech companies guided by the principles of venture capital. Together with co-founders, we assemble strong teams to launch product-driven IT businesses and excel in global markets.We are currently expanding our team and seeking a Middle Backend Engineer to develop world-class internal MarTech systems that will drive business growth at Dressly.Dressly is transforming the fashion industry through AI technology and a personalized approach. We create tailored fashion solutions that empower individuals to express themselves without fear.Since launching in 2024, we have quadrupled our growth in just six months. By 2026, we aim to grow fivefold compared to 2025. Our demand is validated, and we have a steady flow of users.Why Join Us Now?This is your chance to be part of an early-stage team, build products alongside the founders, and reshape the fashion tech industry.To succeed in this role, you should be a versatile engineer capable of seamlessly switching between technologies to tackle real business challenges. Your clients will be the marketing team, designers, and user acquisition managers who rely on your technical expertise to achieve 10x results.Joining us means:Working in the fashion sector, one of the largest consumer industries globally.Creating products at the intersection of fashion, creativity, and AI.Influencing the product: our engineers don’t just write code; they contribute to shaping product vision.Seeing the full picture of the business: from idea and design to launch and user feedback.Collaborating closely with designers, marketers, and creators for a shared outcome.What We Value:3+ years of backend development experience using JavaScript (Node.js), Python, or GoExperience with databases such as PostgreSQL and MongoDBPractical experience with production monitoring and CI/CD pipelinesYou’re an engineer, not just a framework developer: you understand how tools work under the hood, not just how to use them.You work iteratively: the principle of 'build, test, improve' resonates with you.
