Senior .NET Developer for GR8 API Tech

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.

Why this role exists:
This role exists to design, develop, and maintain enterprise-level applications using C#, ASP.NET, and related technologies. The engineer participates in technical discussions and works with cross-functional teams to deliver scalable and reliable software solutions aligned with business requirements.

What you’ll drive:

Software architecture & development
— Design and implement scalable and efficient software architectures.
— Develop and maintain enterprise-level applications using C#, ASP.NET, and related technologies.
— Identify and resolve complex software issues and technical challenges.

Project delivery & collaboration
— Lead and manage software development projects, ensuring timely delivery and quality together with the Delivery Manager.
— Work closely with product management, design, and operations teams to align development with business goals.
— Communicate technical concepts and project updates to stakeholders.

System stability & ownership
— Participate in on-call rotations to support availability and stability of business-critical services.
— Maintain technical documentation for software development and system design.
— Contribute to technical discussions and propose solutions for system improvements.

What makes you a GR8 Fit:
Must-have
— Minimum 5 years of experience in a similar senior engineering role with a track record of leadership, strong technical skills, and successful project delivery.
— Deep hands-on expertise in C# and .NET (Core / .NET 6+).
— Strong understanding of async/await, multithreading, thread safety, memory management, and performance optimization.
— Experience designing and evolving high-load backend systems with strict latency and reliability requirements.
— Ability to identify and eliminate performance bottlenecks across CPU, memory, I/O, and database layers.
— Experience designing and operating microservice-based systems.
— Experience working with messaging systems and event-driven architectures.
— Experience working with relational and non-relational databases.
— Understanding of transactions, isolation levels, locking, concurrency, indexing strategies, and performance tuning.
— Experience working with containerized environments including Docker and Kubernetes.
— Understanding of CI/CD pipelines and automated delivery.
— Understanding of scalability, load balancing, auto-scaling, and disaster recovery.
— Understanding of production observability including logging, metrics, monitoring, and tracing.

Nice-to-have
— Experience with GoLang or Node.js.
— Experience with Microsoft Orleans.

Why you’ll love working here:
Benefits Cafeteria — annual budget you allocate to:
Sports • Medical • Mental health • Home office • Languages.

Work-life & support
— 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.

Our culture & core values:
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.