Backend Engineer - Ruby

Salary: £73,000 - 97,000 per year

Requirements:

• Minimum of 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 a 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.

Responsibilities:

• 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.

Technologies:

• Backend
• CI/CD
• Frontend
• GitHub
• GraphQL
• Heroku
• PaaS
• Playwright
• RSpec
• Rails
• Ruby
• AI
• E2E
• Embedded
• Support

More:

We are Raylo, a subscription infrastructure company transforming how technology is bought, used and reused through a circular model that improves outcomes for customers, brands and the planet. We power leading electronics brands including PlayStation, HP and Dyson, and we are profitable, growing fast, and backed by Macquarie, NatWest and Channel 4 Ventures. Our Engineering team works with a modern backend stack, high autonomy, and a culture of curiosity, focus and execution. We offer benefits including private medical insurance, stock options, an L&D budget, a hybrid working model with one day a week in our London Bridge office, 33 days off, enhanced family leave after 12 months, a workplace nursery scheme, and an exclusive Raylo device lease for employees. We hire to a high bar, value diversity and inclusion, and aim to move quickly through a supportive hiring process.

last updated 36 week of 2026