Senior C#/.NET Developer (Fintech)

TL;DR

Senior C#/.NET Developer (Fintech): Designing and maintaining mission-critical FX trading systems for a tier-1 investment bank with an accent on Orchestrade integration and high-performance C# solutions. Focus on integrating vendor platforms with internal microservices, optimizing data flow, and providing technical leadership in a Front Office environment.

Location: London, UK. No visa sponsorship provided

Company

hirify.global is a tech-native consultancy delivering high-value IT expertise to the financial services industry, specializing in real-time, low-latency, and high-throughput systems.

What you will do

• Analyze, design, and develop high-performance C# solutions for FX cash and derivative products.
• Integrate the Orchestrade platform with internal systems such as Sigma, Barracuda, and Deal Hub.
• Advise on architectural approaches utilizing service-oriented and micro-services concepts.
• Design clean interfaces and manage data flow using SQL and messaging middleware.
• Provide technical leadership and mentoring to developers on C# best practices and FX business logic.
• Deliver expert-level (Level 3) production support for Orchestrade and connected FX IT platforms.

Requirements

• Expert proficiency in C# and the .NET ecosystem.
• Prior experience working in a Front Office investment banking environment alongside traders, quants, or risk managers.
• Strong understanding of SQL/RDBMS and messaging middleware.
• Solid grasp of service-oriented and micro-services design concepts.
• Must have the right to work in the UK; visa sponsorship is not available.

Nice to have

• Strong experience with Orchestrade features, configurations, and APIs.
• Knowledge of FX Forward, Swap, NDF, and FX Options/Derivatives.
• Experience with C++, Java, or the FIX protocol.
• Familiarity with Calypso, Murex, or similar trade management products.

Culture & Benefits

• Direct exposure to the FX Risk IT environment of a major global Tier-1 bank.
• Highly challenging assignments bridging bespoke C# engineering and vendor platform expertise.
• Clear career progression paths for technical leadership and architectural ownership.
• Collaborative environment with a strong focus on high-quality peer review and mentoring.