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Mid-level Backend Engineer
Why We Exist
Economic incentives, environmental pressures, and regulatory shifts are driving a global move toward the circular economy. Consumers and businesses are already moving away from rigid ownership models in favour of more flexible, affordable access. Yet while big tech has embedded subscriptions in everything from music to software to storage, the $1.5 trillion electronic device market remains deeply underserved.
Until now.
Raylo is the subscription infrastructure for the world’s leading electronics brands, powering the circular economy by making devices more accessible, affordable, and flexible for consumers and businesses. The only way customers and manufacturers will make that shift is if it’s simple and cost-effective. This is where we come in.
What We’ve Built
We enable the world’s leading electronics brands to shift from single-use to circular, customer-centric business models. We’re at £70m ARR, profitable, growing fast, with 200,000+ active subscriptions across consumers and small businesses. Customers trust us too, with a 4.5/5 Trustpilot rating from more than 20,000 reviews.
For customers, the experience is simple: subscribe to a device, get support throughout, upgrade when you want, and return it when you’re done. Behind that sits a sophisticated fintech platform powering device subscriptions end to end: credit and fraud decisioning, lifecycle operations, and the financing engine that lets brands offer subscriptions without using their own balance sheet.
No one else has built the full infrastructure to run electronics subscriptions at scale.
Our platform has two sides:
- Raylo.com (marketplace) gives consumers and small businesses access to premium tech from the world’s leading electronics brands.
- Raylo Pay (embedded product) enables brands such as PlayStation and LG to launch subscription journeys directly through their own DTC and ecommerce channels.
Impact of our circular model:
- Cuts emissions per device by around 50% compared to buy-and-discard.
- We’re B Corp certified, backed by Macquarie, NatWest, and Channel 4 Ventures, and recognised by Tech Nation’s Future Fifty.
How We Work
AI is changing what small, ambitious teams can build. Companies that embrace it will define the next decade.
Raylo is uniquely positioned to benefit. We combine proprietary technology and data with the orchestration of physical assets, operating across:
- Credit
- Fraud
- Pricing
- Logistics
- Refurbishment
- Resale
- Customer care
With AI improving every cycle, our moat deepens with scale.
At Raylo, AI is woven into how we work every day. We don’t ration access or hedge our bets. Our people use the best models and tools, and we expect them to do things that weren’t possible a year ago. Processes that used to be good enough are being rebuilt.
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Teams are replacing:
- Spreadsheets with bespoke tooling
- Manual processes with AI-driven automation
- Complex queries with plain-English data retrieval
We give every team their own hackathon: a chance to step back, start with a blank sheet, and ask: "if we were starting today, how would we do this?"
The more we automate, the more human judgement matters. AI gives people back time, and we expect them to spend it on the things no model can replicate:
- Conversations
- Trust
- Team judgement
- Craftsmanship
We hire to a high bar. You’ll work with people who push you, challenge you, and expect the same from you. We want every person at Raylo to do the best work of their lives, and enjoy doing it.
Core Values
✨ Be deeply curious – We thrive on innovation through diverse approaches, views, and people. 👟 Walk in your customer’s shoes – To build the best products and make the best decisions for the long term, we must figure out what our customers need, not just what they want. 🎯 Focus and execute – We have a big vision, but we believe in nailing the most important problems first. 💥 Be gritty – Only gritty teams succeed. Our individual ownership, passion, and perseverance mean we’re a team through thick and thin.
Mid-Level Backend Engineer – What to Expect
You’ll be joining our growing Engineering team as a Mid-Level Backend Engineer, reporting to the Engineering Manager. Our backend team powers critical capabilities like:
- Customer decisioning
- Third-party service integrations
- Automation for operational teams
- Self-serve functionality for customers
You’ll join a culture of high trust and autonomy with no micromanagement, where you’ll quickly make an impact on our mission.
Over the next year, you’ll:
- Develop a deep understanding of our core user journeys and backend systems.
- Gain autonomy in delivering medium-sized projects and play an increasingly important role in driving larger initiatives alongside senior engineers and stakeholders.
- Collaborate cross-functionally with product managers, designers, and frontend engineers to deliver features that directly impact Raylo’s growth and customer experience.
- Work with a modern backend stack:
- Ruby on Rails (8.0)
- Sidekiq Enterprise (200k+ jobs daily)
- Heroku
- GitHub Actions (CI/CD)
- Playwright (E2E testing)
- GraphQL APIs
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 enabling 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 alongside 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.
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You’ll Succeed with
Experience & Skills
- 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.
- Collaborative mindset, strong communication skills, and the ability to make progress in ambiguous situations.
- Proactive, curious, and problem-solving attitude, with a passion for working on real business problems through technology.
- Eagerness to continuously learn and improve your craft, especially within Ruby and Rails.
Opportunities & Benefits
We are continuously improving based on quarterly employee surveys to offer the best possible opportunities and perks.
- 🚀 Fast-track your career – 40% of employees promoted every review cycle (bi-annually).
- 📱 Exclusive Raylo device lease for employees.
- 🏥 Private Medical Insurance.
- 📈 Stock options for all employees.
- 📚 Learning & Development (L&D) budget.
- 🏢 Hybrid working model.
- 🌴 33 days off, your way – 25 days + 8 bank holidays with full flexibility to use on days meaningful to you.
- Workplace nursery scheme for major cost savings.
- 👶 Enhanced maternity/paternity/adoption/shared parental leave if employed for 12 months.
Hiring Process
We move quickly and aim for the best candidate experience. The process begins with a 15-minute call – no preparation required. If there’s an alignment, we accelerate faster.
- Purposeful stages with clear expectations at each step.
- If any adjustments or support are needed, we’ll accommodate them.
As an FCA-regulated business, we conduct background checks (DBS and AML) for all successful candidates during onboarding.
Diversity & Inclusion at Raylo
At Raylo, we celebrate diversity and are committed to creating an inclusive workplace where everyone can thrive. We welcome people of all backgrounds, experiences, and perspectives—that’s what makes us stronger.
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