Senior C# Developer (Contract) - Front Office Engineering | Hedge Fund

The Client

Our client is a highly regarded discretionary investment manager with a strong focus on data‐driven decision making. They operate with a small, agile structure and are recognised for their commitment to excellence in trading and technology.

Their in‐house technology function spans IT infrastructure, software development, and quantitative analysis, supporting all aspects of market data processing and trading activity. The environment is fast‐paced, collaborative, and highly technical, where code quality, performance, and low‐latency systems are top priorities. Engineers work across domains, contribute to architectural discussions, and help shape scalable, robust systems.

We have partnered with this team for several years and have a close, direct working relationship with the CTO. We have successfully placed multiple individuals into the group and can provide detailed insight into the team structure, culture, and expectations.

The Role

The client is embarking on a major initiative to unify and expand their core systems, bringing more of this capability in‐house. They are in search for senior C# developers to work on a contract basis. This will initially be a 12 month contract.

This role will be to work as part of a large re-engineering project to develop and consolidate systems, write software and have a direct impact on several critical platforms. This includes an in‐house C# PnL and Risk system that performs real‐time portfolio valuation, alongside other components that will be integrated into a cohesive, modernised core platform.

Candidate Profile

Domain Expertise

• Strong background in fixed‐income trading systems
• Knowledge across front‐, middle‐, and back‐office workflows
• Demonstrable expertise in:
• Repo trading and lifecycle management
• Post‐trade operations, clearance, and settlement
• Margin and collateral management
• Experience building systems that capture bond and swap (interest rate and FX) cashflow events
• Understanding of accrual (trade date) and realised (settlement date) accounting reconciliations
• Particular interest in candidates with Fixed Income and Rates experience

Technical Skills

• Strong computer science fundamentals
• Hands‐on development experience in:
• C# and .NET (essential for this role)
• Python within quant or data environments
• The client will also consider exceptional engineers from other OOP backgrounds such as C++, Java, or Go
• Familiarity with UI technologies such as WinForms, WPF, Blazor Hybrid, and Blazor Web

Additional interests:

• Experience working in front‐office or trading‐technology environments, or on business‐critical systems
• Pragmatic, delivery‐focused mindset
• Commitment to high‐quality engineering practices and low‐latency, high‐performance systems
• Low‐ego, high‐performing self‐starter who values ownership, teamwork, and delivering commercial, pragmatic solutions

As a long‐standing recruitment partner to this team, we can provide deep insight into the role, expectations, and culture, ensuring you have a clear and accurate understanding of the opportunity.

Due to demand, we are advertising this role anonymously. If you would prefer to speak to someone before submitting a CV, please send a blank application to the role and someone will be in touch to discuss.

We can only respond to highly qualified candidates.