C# Developer

At Radius, we provide best in class fleet and connectivity solutions to businesses of all sizes.

Our mission is to help businesses adapt to the future by building solutions for a more sustainable, connected future.

Our comprehensive portfolio of solutions includes fuel cards, telematics, telecoms, insurance, vehicle leasing, EV charging, business energy, and expense management.

We are proud to have over 400,000 customers worldwide, over 50 offices across 5 continents, and over 2,800 talented Radius colleagues.

We've achieved big things already, but we're just getting started.

This is where you come in...

We’re looking for a talented C# Developer to join our growing team working at the forefront of the Electric Vehicle (EV) charging revolution.

In this role, you’ll be part of a well-established, collaborative team building a feature-rich platform that’s evolving rapidly as the EV market matures. You’ll contribute to the development and maintenance of a wide range of features using modern .NET technologies, helping shape the future of sustainable transport.

We’re seeking someone who writes clean, reliable code, enjoys solving real-world business problems, and thrives in a global team of skilled professionals. You’ll be encouraged to stay current with emerging technologies, adopt modern development practices, and actively participate in planning, architecture discussions, and code reviews.

This role reports to the Team Lead and offers flexibility with either full-time office-based work or a hybrid model (3 days per week in our Head Office in Crewe, North West).

What you’ll be doing:

• Designing and developing new features in a microservices-based architecture
• Building and integrating services that consume external APIs
• Maintaining and enhancing existing web and microservice systems
• Creating and managing internal NuGet packages
• Writing robust unit and integration tests
• Participating in peer code reviews
• Diagnosing and resolving system issues

• 2–4 years’ commercial experience in C# development
• Solid understanding of .NET Core and Web API development
• Experience working in Agile software development teams
• Familiarity with relational databases and basic knowledge of key-value stores
• Exposure to CI/CD pipelines and automated deployment tools
• Experience using ORM technologies such as Entity Framework or Linq2DB
• Comfortable working with .NET Core (.NET 5+)
• Basic experience with containerisation tools like Docker
• Exposure to cloud platforms such as Azure or AWS
• Willingness to learn and take ownership of tasks
• Understanding of version control using Git
• Interest in learning about encryption and networking concepts

Technical Skills:

• C#
• .NET Core
• SQL
• Entity Framework / Linq2DB
• RESTful APIs
• Git
• JavaScript (basic familiarity)
• Docker (basic usage)
• CI/CD tools (e.g., GitHub Actions, Azure DevOps)

Your impact on Radius will be rewarded with the opportunity to develop and progress your career in many directions.

You’ll also have access to our competitive reward and benefits package, which includes:

• Pension
• Life assurance
• Employee fuel card scheme
• Electric Vehicle scheme
• Employee assistance programme
• Wellness and healthcare assistance via ‘Help@Hand’ by Unum
• ‘Cycle to work’ scheme
• Free breakfast daily in the office

And of course, you will be part of a modern purpose-built space in Crewe that will provide you with an outstanding working environment complete with gym, café, games rooms, and more!

Still Curious?

If you feel we are a good match for each other, you can apply online now!

If you’d like to understand more about the role or life at Radius before applying, then please contact our talent team via .

Radius is an equal opportunities employer. We are committed to welcome people regardless of age, disability, gender identity, race, faith or belief, sexual orientation or socioeconomic background.

We are committed to ensuring an inclusive and accessible recruitment process for all candidates. If you require any adjustments or accommodations at any stage of the process, please let us know, and we will do our best to support you.

We reserve the right to close a vacancy before the closing date in the event of an overwhelming response or a change in business priorities.

Note to recruitment agencies:

We do not accept speculative recruitment agency CVs or profiles. Any unsolicited CV received by Radius will be treated as a gift and not eligible for an agency fee.

PSL agencies should only send CVs via our Applicant Tracking System, when approved to do so by the Radius Talent Team.