Backend Developer - Elixir and Ruby

The role of Backend Engineer is important to us.

Due to continued growth and expansion, we are looking for a Backend Developer with Elixir and Ruby experience to join our talented development team in our vehicle telematics business, Radius Telematics.

Telematics is a big growth area for us, so there will be plenty of opportunity to keep your skills up to date and progress your career. We need someone who can balance technical excellence with pragmatic execution, ensuring our product evolves while meeting the demands of today’s challenges. We embrace an Agile way of working, but we know success also requires grit, ownership, and a willingness to step beyond conventional roles.

Specifically, you will play a role in developing and running a complex multi-environment Telematics product using modern microservice backends built in Ruby and Elixir on AWS and automated CI/CD pipelines released onto terraform-provisioned infrastructure.  There will be opportunities to learn as well as using your own experience to influence the team and platform.

Your tech stack will be...

• Ruby / Elixir
• AWS (EC2, S3, Glacier, SQS, Lambda)
• GraphQL, Sentry, Datadog, RabbitMQ
• Databases – MongoDB

What you'll be doing...

• Design, build, and maintain scalable and secure backend systems using Ruby and Elixir, ideally with some experience in Go (not essential).
• Work closely within a cross-functional team and the wider team, with a focus on working together to achieve desired outcomes.
• Lead by example, stepping in to guide the team through challenging situations with persistence and creative problem-solving.
• Support and mentor junior developers, sharing expertise and fostering a culture of growth and excellence.
• Roll up your sleeves and take the initiative to tackle critical challenges during high-stakes situations.

What we're looking for...

• Significant commercial experience as a backend developer
• Critical thinker and problem-solving skills
• Ability to take ownership of projects from design to implementation
• Actively contribute to Agile events, inspect and adapt ways of working, and provide solutions to keep development on track
• Proactive: You don’t wait for direction; you identify what needs to be done and take action.
• Resilient: Challenges don’t deter you—they energise you.
• A Driver: You’re not just a contributor—you push the product and team forward with determination and a solutions-first mindset.
• Collaborative Yet Assertive: You work well in teams but know when to stand your ground and advocate for the right approach.

What you can expect from us...

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 café, barista, pizzeria, roof top bar, and more!

A bit about us...

At Radius, we’ve been helping businesses grow for over 35 years.

From our origins as a fuel card provider in North West England, we’ve evolved into a global business services provider operating in 19 countries across five continents. Our mission is to help companies of all sizes adapt to change and seize new opportunities.

We’re proud to offer a one-stop solution for fleet and connectivity services, tailored to meet the needs of both SMEs and enterprise-level organisations.

#LI-TB1

Diversity, Equality & Inclusion at Radius

Our global DEI networks champion LGBTQ+ inclusion, cultural diversity, women’s empowerment and mental health, neurodiversity and disability support.

We also offer:

• Global Female Health Policy & Female Health Champions
• Pregnancy Loss and Fertility Treatment Policies
• Endometriosis Friendly Employer (UK)
• Women-focused gym & female health events
• Mental Health First Aiders
• Disability Confident Committed Employer (Level 1)
• Race at Work Charter signatory
• Proud sponsor of Crewe Pride (4 years running) and Cheshire Pride Awards Corporate Supporter 2025
• Community network driving charity and volunteering initiatives, with 8 consecutive years of participation in the UK Challenge.
• Give as you earn scheme (payroll giving) and match funding

Next Steps

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.