×
Register Here to Apply for Jobs or Post Jobs. X

Senior C# Developer

Job in Barnsley, South Yorkshire, GL7, England, UK
Listing for: Avanti
Full Time position
Listed on 2026-06-03
Job specializations:
  • Software Development
    C# / Unity Developer, Software Engineer
Salary/Wage Range or Industry Benchmark: 65000 - 80000 GBP Yearly GBP 65000.00 80000.00 YEAR
Job Description & How to Apply Below
Avanti Recruitment is working with a growing, technology-led business based in Slough, that is undergoing a major systems transformation following a recent acquisition. As part of this programme, they are looking to hire a Senior .NET / C# Developer to play a key role in evolving a large-scale legacy platform and supporting its transition from an on-premise desktop environment to a modern, .NET

Core, cloud-based architecture. This is a great opportunity for someone who enjoys solving complex engineering challenges and has experience moving legacy or desktop-based applications towards modern web and cloud platforms. You will be joining at an important stage of the transformation, with around 40 projects in the pipeline, giving you the opportunity to influence technical direction and make a genuine impact on the future of the platform.

The role will involve working closely with the CTO and wider engineering team to assess, improve and progressively enhance an established C# codebase built on older Microsoft technologies. Due to the nature of the work, the business is open to hybrid working, but they would ideally like someone who can attend onsite regularly during the early stages of the project for collaboration, planning and technical workshops Current Tech Environment: C# .NET

Framework Win Forms MS SQL Server On-prem infrastructure React frontend integrations Legacy Desktop applications CI/CD and agile practices TDD

Required Experience:

C# .NET Framework & .NET Core Win Forms / desktop application development MS SQL Server Refactoring and modernisation projects Agile environments CI/CD practices Testing methodologies such as TDD Cloud experience Desirable:
Experience migrating legacy systems React or JavaScript exposure This is an opportunity to shape a long-term transformation programme, with high-level of technical ownership and influence. This role will require greenfield thinking within an established business, and you will get direct access to leadership and architecture decisions. You will be part of a small, collaborative engineering team, with long-term progression opportunities as the technology function grows.

Salary is £65,000 - £80,000  Benefits.
Position Requirements
10+ Years work experience
Note that applications are not being accepted from your jurisdiction for this job currently via this jobsite. Candidate preferences are the decision of the Employer or Recruiting Agent, and are controlled by them alone.
To Search, View & Apply for jobs on this site that accept applications from your location or country, tap here to make a Search:
 
 
 
Search for further Jobs Here:
(Try combinations for better Results! Or enter less keywords for broader Results)
Location
Increase/decrease your Search Radius (miles)
0
200
Filters
Education Level
Experience Level (years)
Posted in last:
Salary