C# / .NET Developer – Front Office, FX & Orchestrade Systems
Join MARGO in the UK (London)
MARGO is a tech-native consultancy delivering high value-added IT expertise to the financial services industry. We specialise in complex software engineering environments where performance, robustness, and scalability are critical: real-time systems, low-latency architectures, and high-throughput data processing
Joining MARGO means working in demanding Front Office and Trading IT environments while benefiting from a human-sized structure, close follow-up, and tailor-made training paths.
Business Context
You will join the FX Risk IT environment of a leading tier-1 investment bank. The team is responsible for designing and maintaining mission-critical systems supporting FX Cash (Forward, Swap, NDF) and FX Derivatives (Options, Carbon Offsets).
The environment is built around the Orchestrade vendor platform and involves close collaboration with traders, quants, and risk managers to deliver high-performance trading solutions.
Role Overview
We are looking for a Senior C# / .NET Developer with a strong technical background to lead the development and integration of FX trading solutions. While expertise in the Orchestrade platform is highly desirable, we are primarily seeking a high-caliber engineer who can master complex vendor APIs and provide technical leadership within a fast-paced, agile culture.
Key Responsibilities
Design & Development
- System Evolution: Analyse, design, and develop high-performance C# solutions for FX cash and derivative products.
- Orchestrade Integration: Develop code to integrate Orchestrade with connected internal systems such as Sigma, Barracuda, and Deal Hub.
- Architecture: Advise on the best architectural approaches for integrating vendor products with service-oriented and micro-services concepts.
- Data & Middleware: Design clean interfaces and manage data flow using SQL and messaging middleware.
Engineering & Mentoring
- Technical Leadership: Provide mentoring and guidance to other developers on ...