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

The City, Central London💼 Contract🗓 2026-05-17 → 2026-08-07

Core

Senior C# developer building and consolidating core trading systems for real-time portfolio valuation and risk management.

Role type

Senior IC C# developer (fixed-income trading systems)

Builds

In-house C# PnL and Risk system, modernized core trading platform

Domain

Fixed-income trading, rates, and post-trade operations

Deliverable

production ML models | product features

Required skills

C#, .NET, Python, fixed-income trading systems, repo trading lifecycle, post-trade operations, margin and collateral management, bond and swap cashflow event handling, accrual and realised accounting reconciliations

Preferred skills

Front-office or trading-technology environment experience, low-latency high-performance systems expertise, WinForms/WPF/Blazor Hybrid/Blazor Web familiarity

Technologies

C#, .NET, Python, WinForms, WPF, Blazor Hybrid, Blazor Web

Responsibilities

Develop and consolidate core trading systems, write software for real-time portfolio valuation, integrate components into a cohesive modernized platform

Seniority

Senior, hands-on IC

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