Senior .Net Developer for GR8 API Tech

• 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. • Benefits Cafeteria — annual budget you allocate to: • Sports • Medical • Mental health • Home office • Languages. • Work-life & support • 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. • FUELLED BY TRUST • OWN YOUR GAME: we take initiative and own what we do. • OWN YOUR GAME • ACCELER8: we move fast, focus smart, and keep it simple. • ACCELER8 • CHALLENGE ACCEPTED: we grow through challenges and stay curious. • CHALLENGE ACCEPTED • BULLETPROOF: we’re resilient, ready, and always have a plan. • BULLETPROOF