C# Developer - Top Market Maker - London

C# Developer – Fixed Income Options

London | Hybrid | Leading Options Market Maker

A leading global options market maker is expanding its Fixed Income Trading team in London and is seeking a junior to mid-level C# Developer to join a high-impact, front-office engineering environment.

You’ll work directly with traders, quants, and strategy developers to build and enhance trading tools and systems that support pricing, execution, and research across fixed income options markets.

About this role:

• Develop and enhance high-performance C# trading applications used by front-office teams
• Collaborate closely with traders and quantitative researchers to enable new trading strategies
• Build scalable, low-latency systems and data pipelines handling large volumes of market data
• Contribute across the full software development lifecycle, from design to production support
• Continuously improve system stability, performance, and usability in a fast-moving trading environment

Qualifications:

• 1–8 years’ experience in C# / .NET development
• Bachelor’s degree (or higher) in Computer Science or a closely related technical field
• Strong understanding of software engineering fundamentals and object-oriented design
• Experience building server-side or distributed systems in a production environment
• Interest in financial markets, trading systems, or quantitative environments
• Strong problem-solving ability, attention to detail, and willingness to learn

This opportunity offers a highly competitive compensation package and hybrid working model.