C# Developer - Financial Systems (Hybrid)

About the role

Talan is looking for a C# Developer to join a high-performing team in London on a hybrid basis (3 days per week on site). You will build and enhance a distributed, real-time P&L and risk analytics platform used by Fixed Income Rates and FX trading desks globally, working with developers, traders and quantitative teams across the full development lifecycle.

Key responsibilities

• Develop and maintain scalable .NET/C# services within a distributed streaming architecture
• Build and support real-time data processing systems for P&L and risk analytics
• Work on out-of-process services, system integrations and data materialisation layers
• Drive Agile best practices, including test-driven development (TDD) and automation
• Collaborate with global teams across EMEA, NY and APAC
• Take ownership of features, propose improvements, troubleshoot issues and help unblock cross-team dependencies

Required profile

• Strong expertise in C# / .NET development
• Solid grounding in computer science fundamentals and design patterns
• Strong communication and stakeholder engagement skills
• Ability to quickly learn and adapt to new technologies
• Passion for automation, simplicity and continuous improvement
• Collaborative team player with a proactive mindset

Required skills

• Experience with Redis Cluster
• Solid understanding of TDD and automated testing
• Experience with CI/CD pipelines
• Desirable: distributed systems, streaming and messaging (e.g. Rx .NET)
• Desirable: performance and memory profiling, end-to-end SDLC experience