> Markdown version of [/jobs/ext/2206108-mid-level-developer](https://www.wearedevelopers.com/jobs/ext/2206108-mid-level-developer). 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). --- # Mid Level Developer - **Company:** Oscar Associates (UK) Ltd - **Location:** Leeds, UK - **Experience:** Experienced - **Salary:** £40,000.0 - £50,000.0 - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, Delphi (Programming Language), Business Systems, Database Design, Microsoft SQL Server, Visual Basic .NET (Programming Language), Software Engineering, Data Streaming, Systems Integration, Windows Forms, Devexpress, Blazor, Vba Programming Language, Software Version Control - **Published:** August 24, 2026 - **Apply:** https://www.totaljobs.com/job/mid-level-developer/oscar-associates-uk-limited-job107889877 ## About the Role The ideal candidate will have strong commercial experience with: * C# and .NET Framework * WinForms, including maintaining and enhancing legacy applications * Blazor * SQL Server, including database design and optimisation * System integration and managing data across multiple platforms * Software development principles, testing and version control Experience working with legacy technologies such as VB.NET or Delphi would also be beneficial. Desirable Experience * Modernising legacy applications and moving towards more maintainable architectures * ASP.NET Core or other modern .NET technologies * DevExpress or similar third-party development components * VBA * ERP systems * Experience within manufacturing, logistics or another operational environment * Integrating multiple business systems and managing data flows This is a strong opportunity for a Mid-Level .NET Developer who wants a varied role, genuine ownership and the opportunity to work across both established and modern technologies within a growing IT function. ## Description We are working with an established organisation that is looking for a Mid-Level Developer to join a small, collaborative IT team. This is a great opportunity for a developer who has progressed beyond junior level and is looking to take ownership of development work, contribute to key business systems and help modernise existing technology. You'll work across a varied technical environment, developing and maintaining applications while also getting involved in improving systems, integrations and overall architecture. There's plenty of opportunity to broaden your technical skills and have a genuine impact on the organisation's technology roadmap. ## Related Videos - [Blazor Unleashed: The Future of .NET Web Development](https://www.wearedevelopers.com/videos/1564-blazor-unleashed-the-future-of-net-web-development) - [Building Multi-Tenant ASP.NET Core Applications: Best Practices and Real-World Solutions](https://www.wearedevelopers.com/videos/1552-building-multi-tenant-asp-net-core-applications-best-practices-and-real-world-solutions) - [Blazor – the new SPA Framework for everyone who hates JavaScript](https://www.wearedevelopers.com/videos/699-blazor-the-new-spa-framework-for-everyone-who-hates-javascript) - [Mastering Modern Architecture - Oliver Sturm](https://www.wearedevelopers.com/videos/1827-mastering-modern-architecture-oliver-sturm) - [Blazor and Azure functions for Serverless Website](https://www.wearedevelopers.com/videos/115-blazor-and-azure-functions-for-serverless-website) - [This Is Not Your Father's .NET](https://www.wearedevelopers.com/videos/967-this-is-not-your-father-s-net) ## Related Articles - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)