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# Senior Backend Engineers (Polyglot)

- **Company:** Cleo
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Business Logic, Ruby, Backend
- **Published:** September 10, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=0a3ab52d15f271fc

## About the Role

* An experienced engineer with solid fundamentals, having worked across any modern tech stack - the specific language matters less than your ability to reason clearly, learn quickly, and think in trade-offs
 * A track record of writing maintainable, thoughtful code and making sound technical decisions with minimal oversight
 * Comfortable working with Ruby, or confident you can ramp up quickly in it - deep Ruby experience isn't required
 * Strong collaboration skills with product, design, and data partners, with genuine curiosity about users and their problems
 * Experience mentoring or raising the bar for engineers around you, and contributing positively to team culture
 * Motivated by Cleo's mission - you care about building products that genuinely improve people's financial health
 * Alignment with our engineering principles - autonomy, accountability, pragmatism, and building things that matter

## Description

We're hiring Senior Backend Engineers to join one of our cross-functional product squads - working closely with other engineers, designers, analysts, and product partners to build features that improve our users' financial health., * Shape the direction of upcoming work - break down ambiguous problems with your squad and help drive projects from early discovery through to shipped impact

 * Build and evolve the APIs, data models, and business logic behind our product; no Ruby experience required, just strong fundamentals and sound judgement on trade-offs
 * Contribute to testing, observability, and experimentation, and help continuously raise the bar on developer experience and product quality
 * Drive high-impact initiatives such as our secured credit card, budgeting and financial insight features, and subscription/pricing experiments
 * Mentor engineers at your level and beyond, share knowledge generously, and help build a culture where people grow quickly and have real influence