Senior Ruby Backend Engineer for AI Finance Platform

Cleo; Greater London; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Equity

Health insurance

Pension

Learning & Development platform

Sabbatical after four years

Job summary

Cleo is building the world’s first AI financial assistant to help people manage money better. We’re hiring Senior Backend Engineers to join cross-functional squads, shaping features that improve users’ financial health.

You’ll work with Ruby, Python, React Native, and data services, owning APIs and backend systems while mentoring peers. Join a fast-growing unicorn with a strong engineering culture, equity, and a focus on impacting millions of customers.

Qualifications

• Strong fundamentals in software engineering and problem solving.
• Experience writing maintainable, well-architected code with minimal oversight.
• Comfortable with Ruby or willing to ramp up quickly in Ruby.

Responsibilities

• Shape the direction of upcoming work from discovery to shipped impact.
• Build and evolve APIs, data models, and business logic behind the product.
• Contribute to testing, observability, and improve developer experience.

Skills

Ruby

Backend engineering

APIs

Code quality

Mentoring

Tools

Ruby on Rails

React Native

Python

PostgreSQL

AWS

Kubernetes

Job description

Cleo is building the world’s first AI financial assistant to help people manage money better. We’re hiring Senior Backend Engineers to join cross-functional squads, shaping features that improve users’ financial health.

You’ll work with Ruby, Python, React Native, and data services, owning APIs and backend systems while mentoring peers. Join a fast-growing unicorn with a strong engineering culture, equity, and a focus on impacting millions of customers.