Senior .NET Migration Engineer Jobs

Senior .NET Migration Engineer

Orbis Consultants

Location:
United Kingdom, London

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

250000.00 GBP / Year

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Job Description:

Critical Hedge Fund Migration – Senior .NET Migration Engineer. 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.

Job Responsibility:

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

Additional Information:

Job Posted:
December 11, 2025

Employment Type:

Fulltime

Work Type:

Hybrid work

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