Contract C# Developer - FX at Oliver Bernard, London Area, £600 per day

Senior Contract C# Developer – FX Trading - £600/day - OUTSIDE IR35

We’re partnering with a leading global brokerage and trading firm to recruit an experienced Senior Contract C# Developer with prior FX experience. This is a high-impact role within a sophisticated trading environment, ideal for someone who thrives on complex systems and business-critical technology.

You’ll play a key part in shaping and delivering the firm’s technology strategy, working closely with stakeholders to translate business requirements into robust, scalable solutions.

Essential Skills & Experience

• Strong commercial experience with C#, .NET, MVC, SQL Server, and Git
• Prior FX / trading systems experience (essential)
• Passion for technology and its real-world application
• Strong interpersonal skills and a team-focused mindset
• Mathematically literate with a logical, analytical approach

Key responsibilities include:

• Designing, developing, testing, and deploying new features across the platform
• Interpreting business requirements and implementing solutions within defined designs
• Providing L3 support for in-house production systems
• Coordinating support responses for third-party systems and infrastructure
• Mentoring and supporting junior developers
• Staying ahead of emerging technologies and assessing opportunities and risks

Accountabilities

• End-to-end requirements gathering, interpretation, and implementation
• Full-stack development, including testing, debugging, and documentation
• Strong collaboration and communication across technical and business teams
• Continuous learning and improvement

This is an opportunity to work with a globally recognised trading firm on mission-critical systems, in a role that offers autonomy, technical challenge, and real influence.

Senior Contract C# Developer – FX Trading - £600/day - OUTSIDE IR35