> Markdown version of [/jobs/ext/4076272-c-developer-net-core-fintech](https://www.wearedevelopers.com/jobs/ext/4076272-c-developer-net-core-fintech). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # C# Developer .Net Core - FinTech - **Company:** Client Server - **Location:** Newcastle upon Tyne, UK - **Experience:** Expert - **Salary:** £90,000.0 - £110,000.0 - **Contract:** Permanent contract - **Skills:** C Sharp (Programming Language), Distributed Systems, Python (Programming Language), Software Construction, .NET Core - **Published:** October 27, 2026 - **Apply:** https://www.client-server.com//job/senior-c-developer-net-core-fintech-9/apply ## 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