Remote-first (Italy preferred) Full-time freelance | Long-term (12+ months) We are looking for a backend engineer who deeply understands how systems work under the hood. This role focuses on building and evolving high-performance financial infrastructure powering instant trading and crypto-native financial products. This is strictly a backend role. What You’ll Work On High-throughput C#/.NET backend services Real-time trading workflows Event-driven architectures Stateful systems and persistent connections Performance optimization and concurrency management Low-latency APIs and financial flows Scalable distributed systems What We Expect Strong knowledge of C# / .NET internals Solid understanding of memory management (stack vs heap) Concurrency, multi-threading, async patterns Experience building real-time or low-latency systems Understanding of TCP / / WebSockets Experience in fintech, trading, crypto or banking systems Strong ownership mindset If you think you are a match, please apply here