Senior 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 Senior 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 onsite per week) in our Head Office in Crewe, Cheshire.

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

What do we expect of you?

Experience:

• Minimum of 4 years' commercial experience in C# development
• Strong critical thinking and problem-solving abilities
• Hands-on experience with .NET Core Web APIs
• Proven track record in Agile, continuous delivery environments
• Solid understanding of relational, object, and key-value databases
• Familiarity with CI/CD pipelines and deployment automation
• Proficient with ORM technologies such as Linq2DB and Entity Framework
• Comfortable working with .NET Core (.NET 5+)
• Experience with containerisation tools like Docker and Docker Compose
• Exposure to orchestration platforms such as Kubernetes
• Experience working with cloud platforms including Azure, AWS, and Google Cloud
• Familiarity with Linux environments (advantageous)
• Strong sense of ownership from design through to implementation
• Understanding of socket programming (TCP/IP)
• Basic knowledge of encryption principles
• Proficient in version control using Git

Technical Skills:

• C#
• NET Core
• SQL (strong knowledge)
• Linq2DB, Entity Framework Core
• RESTful APIs
• RabbitMQ / Kafka
• CQRS pattern
• NuGet package development and management
• JavaScript
• Docker / Kubernetes
• Git / DevOps tools

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
• Performance-based annual bonus
• Employee fuel card scheme
• Electric Vehicle scheme
• Employee assistance programme
• Wellness and healthcare assistance via '' 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 [email protected].

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.