Senior Engineers (Ruby)

JobCubby; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Equity

Health insurance

Dental insurance

Vision insurance

Mental health support

Sabbatical after four years

Learning & development platform

Pension contributions

Job summary

Cleo is hiring a Senior Backend Engineer to help shape product features from discovery to shipment. You will build and evolve APIs, data models, and business logic, while mentoring other engineers to foster growth across teams.

The role emphasizes strong fundamentals in Ruby and collaboration with engineers, designers, analysts, and product partners to deliver impact for users' financial health.

Qualifications

• Experienced engineer with commercial Ruby experience.
• Track record of writing maintainable, thoughtful code.

Responsibilities

• Shape the direction of upcoming work from discovery through shipped impact.
• Build and evolve APIs, data models, and business logic behind the product.
• Mentor engineers and help raise the bar on developer experience and product quality.

Skills

Ruby

Mentoring

Cross-functional collaboration

Tools

Ruby on Rails

React Native

Python

AWS

Job description

to apply - email only, no card. You can also save this posting or score it againstyour profile with AI.## About the roleYou will shape the direction of product features by breaking down ambiguous problems and driving projects from discovery to shipment. Additionally, you will build and evolve APIs, data models, and business logic while mentoring other engineers to foster team growth.## RequirementsThe role requires an experienced engineer with solid fundamentals and commercial experience working with Ruby. You must demonstrate a track record of writing maintainable code and possess strong collaboration skills to work effectively with cross-functional partners.## BenefitsEquityHealth insuranceDental insuranceVision insuranceMental health supportPaid one-month sabbaticalLearning and development platformPension contributionsRetirement contributionsLeave entitlements## Full descriptionMost money apps talk at you. Cleo talks back |We're not building another finance app. We're building the world's first AI financial assistant, one that actually understands your money and makes you better at it, and we're changing the world's relationship with money in the process | For everyone, whatever their background or balance.The proof: profitable, fast-growing, a unicorn with over $300M in ARR, and millions of people who now feel differently about their money.We love original thinkers who challenge the status quo. We move fast, tell the truth, and there's nowhere to hide from good work here. If that excites you more than it scares you, you'll fit right in.Follow us on LinkedIn for new features and the occasional roast |Meet The Team |Here at Cleo, we have ~200 Engineers organised into Pillars | Our stack spans a Ruby on Rails monolith, a single React Native (TypeScript) app frontend, Python for machine learning services, and PostgreSQL, all hosted on AWS and shipped through Kubernetes - backend goes out multiple times a week, app releases to Google and Apple at least weekly. To thrive here, our engineers proactively use our Engineering Principles to guide daily decisions, take ownership of problems beyond their own squad to drive broader impact, and actively drive their own learning, development and growth.About The Role |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.Key responsibilities for this role include:* 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 influenceWhat We're Looking For |* An experienced engineer with solid fundamentals, having commercial experience working with Ruby.* 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* 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 matterWhat we offerWe offer benefits package built to support you in and out of work. Benefits vary by country | and include meaningful equity, comprehensive health, dental and vision insurance, mental health support, a paid one-month sabbatical after four years, a learning and development platform, pension or retirement contributions, and location-specific leave entitlements.For the full breakdown on what's available in your location, visit our Candidate Hub |What MattersCleo's mission is to change the world's relationship with money. We can't do that without building a brilliant, genuinely diverse team - and making sure our hiring process gives everyone a fair shot, running a fair and transparent recruitment process in which every candidate is considered on their metris.We're glad to make reasonable adjustments at any stage of the process. If there's anything we can do to support you in showing us your best, please let your recruiter or one of the team know.We may use AI-assisted tools during the recruitment process to take support the team in different ways like taking notes or referring back to conversations. They do not replace the team and all applications are reviewed by a Cleo employee thoroughly!