Senior C# React Developer - Investment Banking

About the role

Talan supports a long-standing client in building and enhancing a front office risk and valuation platform used in a fast-paced, real-time environment. It is looking for a hands-on Senior Developer to join a high-impact technology team responsible for risk, valuation and decision support systems, working across the full stack in an agile setting.

Key responsibilities

• Design and deliver high-quality features across UI, backend services and data layers
• Work closely with business users and technical peers
• Collaborate with stakeholders to refine requirements and deliver practical solutions
• Contribute to system design, code reviews and continuous improvement
• Support live systems and take part in an on-call rota
• Balance quick deliveries with longer-term enhancements

Required profile

• Strong C# backend development experience
• Solid knowledge of TypeScript and React
• Experience with relational databases (PostgreSQL preferred)
• Ability to work in fast-paced, collaborative environments with evolving requirements
• Strong communication skills and proactive mindset
• Desirable: experience with risk/valuation systems or real-time platforms, exposure to financial products such as derivatives, and knowledge of distributed or data-intensive systems

Technical stack

• Frontend: TypeScript, React
• Backend: C# / .NET
• Database: PostgreSQL
• Integration with pricing and computational services

Working model: hybrid, three days per week in the London office, with collaboration with global teams.