NET Developer

  • Avanti Recruitment
  • Chigwell, Essex
  • 26/02/2026
Full time Information Technology Telecommunications

Job Description

.NET Developer
Location: Office-Based UK
Industry: Financial Services

Are you a strong C# developer who enjoys working on real-world systems while helping modernise them?

We are hiring a .NET Developer to join a collaborative, office-based engineering team within an established UK financial services organisation. This role offers a rare opportunity to work on a live, customer-facing platform while actively contributing to its evolution toward modern .NET and Azure technologies.

This is not a pure greenfield role. It is not a legacy-only support role. It is a genuine blend of both.

The Role

You will work on a business-critical lending platform used daily by customers across the UK.

The role is approximately:

  • 60% backend
  • 40% front-end

You will:

  • Maintain and enhance an existing ASP.NET MVC application
  • Build and improve backend logic using C#
  • Work with Entity Framework and SQL Server
  • Write and optimise T-SQL queries
  • Contribute to UI updates when required
  • Help drive the ongoing migration to .NET Core
  • Support the move to Azure App Services
  • Contribute to improving engineering standards and practices

This is a hands-on, full-stack position with strong backend depth.

Current Tech Stack

ASP.NET - MVC 5 - .NET Framework - C# - Entity Framework - 6SQL Server - JavaScript / jQuery - HTML & CSSAzure SQL VMs

Modernisation Roadmap

  • Migration to .NET Core
  • Azure App Services adoption
  • Improved SOLID and TDD practices
  • AI integrations
  • Continued cloud optimisation

You will play an active role in shaping this transition.

What We Are Looking For

  • Strong C# development experience
  • Experience with ASP.NET MVC and .NET Framework
  • Exposure to .NET Core
  • Solid SQL Server and T-SQL skills
  • Comfortable working full-stack in a backend-heavy role
  • Strong communication skills
  • Able to work collaboratively in an office-based environment

Desirable

  • Experience migrating to .NET Core
  • Azure exposure
  • Experience with App Services
  • Understanding of SOLID principles and TDD
  • Mentoring experience

The Ideal Candidate

You will thrive here if you:

Enjoy working with complex systems

Are comfortable maintaining legacy code

Are motivated to modernise and improve platforms

Communicate clearly and confidently

Want long-term impact rather than short-term project work

If you are a .NET Developer who can balance maintaining a live production system with helping move it toward modern architecture, we would love to hear from you.