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# Senior C# Developer .Net Core - FinTech

- **Company:** Client Server
- **Location:** Boldon Colliery, UK
- **Experience:** Expert
- **Salary:** £110,000
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, C Sharp (Programming Language), Data Structures, Software Design Patterns, Distributed Systems, Python (Programming Language), Object-Oriented Software Development, Software Construction, Software Engineering, .NET Core, Backend, Information Technology
- **Published:** November 4, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/senior-c-developer-net-core-fintech/54835799

## About the Role

As a Senior C# Developer you will collaborate with a small, talented team to deliver the core platform using the latest versions of C# .Net to produce high quality code. You'll take ownership of technical projects, working across the full development lifecycle to understand business needs., You have achieved a minimum 2.1 BSc in Computer Science or similar technical discipline from a top tier / Russel Group university, backed by A's at A-level
You're a technologist who enjoys collaborating and problem solving, working on complex, distributed systems
You have expertise with modern C# .Net Core, Python skills would also be of benefit
You have a strong knowledge of modern software engineering best practices and have experience across the full software development lifecycle
You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, Algorithms
You're excited to join a start-up in a role that you can shape and influence

## Description

Senior C# Developer / Backend Software Engineer (C# .Net Core) *Newcastle onsite* to 110k+
Are you a senior, backend focused C# Developer with a strong academic background?
You could be working on complex, high impact systems at a growing FinTech scale-up with solid financial backing and ambitious growth plans.
What's in it for you