Job Description

Critical Hedge Fund Migration – Senior .NET Migration Engineer | £250K | FTC

I'm working with a large Hedge Fund who are looking for a Senior .NET Migration Engineer for a 6-month rolling FTC to join a small, focused team and help deliver this migration successfully.

This is a New York City–based role with a strong preference for 3 days per week in-office.

The ideal candidate has led or contributed meaningfully to previous .NET migrations, and understands both the challenges and the opportunities that come with evolving a legacy codebase into a more modern stack.

There’s no need for financial services experience – what matters most is a solid track record of migrating real-world systems across .NET platforms, and a sharp eye for both quality and scalability.

Responsibilities

• Taking technical ownership of major parts of the migration from .NET Framework on Windows to .NET Core running on Kubernetes
• Refactoring, rewriting, and modernising legacy codebases for performance, reliability and maintainability
• Supporting containerisation efforts with Docker and Helm, targeting deployment into Kubernetes
• Working within the client’s CI/CD environment (TeamCity, Octopus Deploy, GitHub Actions) to support seamless integration of new components
• Advising on architectural best practices during the migration process, and helping mentor internal team members where needed

Requirements

• Deep experience with both .NET Framework and .NET Core, and demonstrable experience migrating between the two
• Strong hands-on knowledge of Entity Framework, including the differences and pitfalls when porting to .NET Core
• Practical experience with ASP.NET in legacy and modern contexts
• Solid skills with Kubernetes, Docker, and Helm – ideally having deployed and operated .NET applications in containerised environments

The Offer

• Initial 6 month Fixed Term Contract
• Competitive salary up to £250k guaranteed comp per annum
• London location, ideally 3 days/week onsite
• High-impact project with clear scope and a skilled, pragmatic team
• An opportunity to do meaningful engineering work – no market domain knowledge required

Let’s Talk

If you’re a .NET engineer who thrives on solving complex migration challenges and you’re ready to jump into a fast-moving, well-scoped project, this is a great opportunity to make an immediate impact.

Apply now with your CV, or get in touch for a confidential discussion.

We are an equal opportunities employer and welcome applications from all qualified candidates.