Middle .Net Developer for Payments Team

GR8 Tech is a leading B2B provider of iGaming solutions that empowers operators to grow, lead, and win.

We deliver high-impact, full-cycle tech solutions designed to scale. From seamless integration and expert consulting to long-term operational support, our platform powers millions of active players and drives real business growth. It's more than just a product — it's the iGaming Platform for Champions, built for those who play to lead.

We know the game and how to take it to the next level. With 1000+ talented professionals on board, we don't just build tech — we build success stories for iGaming operators all over the world.

Our ambition drives us, our people make it real. Join us and be part of building champion-level success

• Writing, testing, and debugging software applications to ensure functionality and efficiency;
• Developing and implementing new features based on project requirements;
• Participating in code reviews and ensuring adherence to coding standards;
• Collaborating with cross-functional teams to deliver high-quality solutions;
• Troubleshooting and resolving software issues and performance bottlenecks;
• Optimizing applications for scalability, reliability, and performance;
• Developing and maintaining unit and integration tests;
• Providing technical guidance and support to junior engineers;
• Maintaining technical documentation and contributing to project planning;
• Staying up to date with modern technologies and best development practices.

• 3+ years of experience in a similar role;
• Strong proficiency in C# and .NET Core, including object-oriented design, asynchronous programming, dependency injection, and best practices for scalable backend development;
• Experience in designing and developing RESTful Web APIs using ASP.NET Core, with a focus on performance, security, and integration in microservices environments;
• Hands-on experience with microservices architecture and design patterns, including event-driven systems, CQRS, service discovery, and resilience patterns (e.g., circuit breaker, bulkhead, rate limiter);
• Solid understanding of databases and SQL, including schema design, optimization, normalization/denormalization, and experience with PostgreSQL (or similar relational DBs);
• Proficiency with message brokers (Kafka preferred), including producer/consumer integration and stream processing concepts;
• Practical experience with containerization and orchestration tools, such as Docker and Kubernetes, and knowledge of DevOps practices, CI/CD pipelines, and automation tools (e.g., GitLab CI, Terraform);
• Good grasp of cloud computing concepts (IaaS, PaaS, SaaS) and familiarity with major cloud providers like AWS, Azure, or GCP;
• Strong debugging, performance tuning, and profiling skills to identify and resolve bottlenecks in backend systems;
• Experience with unit testing and TDD, using frameworks such as MSTest, xUnit, or NUnit, and commitment to code quality and maintainability;
• Understanding of software architecture and security fundamentals, including secure coding practices, authentication/authorization, encryption, and common vulnerability mitigation;
• Intermediate English and fluent Russian or Ukrainian proficiency is a must.

Benefits Cafeteria

An annual fixed budget that you can use based on your needs and lifestyle. You decide how to allocate it:

• Sports – gym, yoga, or any activity to keep you active;
• Medical – insurance and wellness services;
• Mental health– therapy or coaching support;
• Home office – ergonomic furniture, gadgets, and tools;
• Languages – courses to improve or learn new skills.

Work-life

• Parental support with paid maternity/paternity leave and monthly childcare allowance;
• 20+ vacation days, unlimited sick leave, and emergency time off;
• Remote-first setup with full tech support and coworking compensation;
• Regular team events – online, offline, and offsite;
• Learning culture with internal courses, career development programs, and real growth opportunities.

GR8 Tech culture is how we win. Behind every bold idea and breakthrough is a foundation of trust, ownership, and a growth mindset. We move fast, stay curious, and always keep it real, with open feedback, room to experiment, and a team that's got your back.

• FUELLED BY TRUST: we're open, honest, and have each other's backs;
• OWN YOUR GAME: we take initiative and own what we do;
• ACCELER8: we move fast, focus smart, and keep it simple;
• CHALLENGE ACCEPTED: we grow through challenges and stay curious;
• BULLETPROOF: we're resilient, ready, and always have a plan.

To keep things efficient, please apply only for roles that closely match your experience.