Senior .NET Developer for Sport Math Team en Spain

GR8_TECH culture is how we win - through trust, ownership, and a growth mindset. We move fast, stay curious, and 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.

GR8_TECH builds B2B iGaming platforms for operators who play to lead.

We deliver full-cycle, high-impact tech designed to scale - from seamless integrations and expert consulting to long-term operational support. Our platform powers millions of active players and drives real business growth. Call it what it is: the iGaming Platform for Champions.

With 1000+ GR8 people across locations and time zones, we don't just ship technology - we help operators build success stories across brands, markets, and geos.

Our ambition drives us. Our people make it real.

If you're a challenger in spirit and a champion in action - join us.

This role exists to design, develop, and maintain https://jobeax.com/link/03uI79RN59z1pmOf systems for the Sport Math Team, ensuring high performance, resilience, and alignment with business objectives while mentoring engineers and improving development practices.

• Designing and implementing scalable, resilient, and efficient software architectures using microservices, event-driven, and cloud-native approaches.

• Writing, testing, and debugging complex code for new and existing applications.
• Conducting code reviews to ensure quality, security, and adherence to best practices.
• Delivering production-ready code in a timely manner.

• Providing guidance and mentoring junior engineers and team members.
• Collaborating with cross-functional teams, including product management, design, and operations, to align development efforts with business goals.

• Researching and implementing new technologies and methodologies to improve software performance and processes.
• Identifying and resolving complex software issues and technical challenges.
• Driving continuous improvement in development practices.

• Creating and maintaining comprehensive technical documentation.
• Communicating effectively with stakeholders, presenting technical concepts and project updates.

• Strong experience in designing scalable and https://jobeax.com/link/uiSJHuwlIC4Vx2Bp systems (microservices, event-driven, cloud-native).
• Advanced C# skills, RESTful API development, asynchronous programming, and mastery of design/resilience patterns (DDD, CQRS, circuit breaker, etc.).
• Proficiency in SQL optimization, data modeling, indexing, and experience with relational and NoSQL databases.
• Hands-on experience with Kafka, high-load system optimization, caching, and distributed computing.
• Solid experience with CI/CD pipelines, Docker/Kubernetes, and infrastructure automation.
• Strong focus on testing (xUnit, NUnit), monitoring (Serilog, App Insights), and secure coding practices.
• Proven experience mentoring peers and driving technical decisions in Agile teams.
• Upper-Intermediate+ English, B2+ Ukrainian/Russian.

• Experience leading or managing software development projects.
• Familiarity with cloud platforms (Azure, AWS) and cloud-native service design.
• Experience improving software development practices and SDLC processes.

Benefits Cafeteria - annual budget you allocate to:

Sports • Medical • Mental health • Home office • Languages.

• Paid maternity/paternity leave + monthly childcare allowance.
• 20+ vacation days, unlimited sick leave, emergency time off.
• Remote-first + tech support + coworking compensation.
• Team events (online/offline/offsite).
• Learning culture with internal courses + growth programs.