Senior Back-end Engineer

The Impact You'll Make:

As a Senior Backend Engineer, you will own a set of well-scoped, high-value backend workstreams: new third-party feed integration and a service-layer refactor. You will collaborate with the Senior Architect and Technical PM who manage cross-team dependencies.

What you'll do:

• Design and build integrations with external providers and data services
• Implement well-bounded backend features, modules service-layer refactors, new configuration surfaces, operator-facing API endpoints
• Responsible for API contracts: own and publish endpoint specifications for every feature you ship – REST or SignalR
• Diagnose and resolve defects.
• Follow layered architecture and code standards, work within the platform’s established layering model (Controller Service Domain Repository) and its enforced boundaries
• Contribute to the security and reliability of the platform and improve error handling and observability in real-time flows

• 5+ years of experience writing layered C# on ASP.NET Core.
• Production experience with Redis pub/sub fan-out patterns.
• Hands-on with SignalR hubs (GameHub / LobbyHub patterns), group-based message broadcasting, and custom Bearer authentication handlers
• Understanding the Redis-to-SignalR bridge and how player/game groups are managed.
• Proven experience designing and shipping integrations with external HTTP APIs that use custom authentication schemes.
• Hands-on experience designing and operating systems where latency is a first-class constraint, real-time event delivery, or high-throughput message processing.
• Comfortable reading and writing stored-procedure-driven schemas (Azure SQL / T-SQL)
• Experience in designing well-documented, versioned APIs and integrations.
• Fluent English

Nice-to-Haves:

• Experience with cloud platforms (AWS, Azure, or GCP)
• Background in fintech or gaming industry

What we offer:

• Generous salaries and bonuses
• Professional trainings and English courses
• Flexible working schedule
• Cozy office with plenty of fresh fruits & snacks
• Team building activities, special events and conferences
• Private health insurance for you and your family
• Sport reimbursement
• Parking area