Backend Engineer - Rails

🔒 Confidential Employer
Posted 8 May 2026
LOCATION
London
TYPE
Full-time
LEVEL
Mid-Senior level
CATEGORY
Software Engineering
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion

SKILLS

Ruby on Rails Sidekiq GraphQL Heroku GitHub Actions Playwright RSpec CI/CD

FULL DESCRIPTION

Backend Engineer - Rails

[Employer hidden — sign up to reveal] - London (Hybrid) - Full-time

About [Employer hidden — sign up to reveal]

[Employer hidden — sign up to reveal] is the subscription infrastructure for the world's leading electronics brands, powering the circular economy by making devices more accessible, affordable, and flexible. We're at £70m ARR, profitable, growing fast, with 200,000+ active subscriptions. B Corp certified, backed by Macquarie, NatWest and Channel 4 Ventures.

What You'll Do

  • Build, maintain, and scale backend services using Ruby on Rails and related technologies.
  • Collaborate with product and frontend teams to deliver features that enable new customer experiences and operational efficiencies.
  • Participate in code reviews and pairing sessions, sharing knowledge and learning from others.
  • Integrate and optimise third-party services that power our subscription platform.
  • Continuously improve backend systems with a focus on scalability, reliability, and performance.
  • Take ownership of medium-sized projects, from design to delivery, and contribute to larger initiatives with senior engineers.
  • Write clean, tested, and maintainable code, with CI/CD pipelines in GitHub Actions and end-to-end testing in Playwright.
  • Work on asynchronous job processing at scale with Sidekiq Enterprise.

You'll Succeed With

  • 2–4 years of backend engineering experience, ideally in a fast-paced startup or scale-up environment.
  • Strong proficiency in Ruby on Rails and experience with Sidekiq for large-scale job processing.
  • Experience deploying and running applications in Heroku (or similar PaaS), with confidence in CI/CD pipelines.
  • Familiarity with GraphQL APIs and automated testing frameworks such as RSpec.
  • A collaborative mindset, with strong communication skills and the ability to make progress in ambiguous situations.
  • A proactive, curious, and problem-solving attitude, with a passion for working on real business problems through technology.
  • An eagerness to continuously learn and improve your craft, especially within Ruby and Rails.

Opportunities & Benefits

  • Exclusive [Employer hidden — sign up to reveal] device lease for employees
  • Stock options for all employees
  • L&D budget to support the skills you value
  • Hybrid working model
  • 33 days off, your way – 25 days + 8 bank holidays with full flexibility
  • Enhanced maternity, paternity, adoption or shared parental leave
  • Workplace nursery scheme for major cost savings
Sign up free — access 45,000+ UK sponsor-licensed jobs