Senior Product Engineer - Python | remote + hybrid

Overview

About Cleo:
At Cleo, we're not just building another fintech app. We're on a mission to fundamentally change humanity's relationship with money. Imagine a world where everyone, regardless of background or income, has access to a hyper-intelligent financial advisor in their pocket.

About the Company:

Cleo is a profitable, fast-growing unicorn with over $300 million in ARR. We have an exceptionally high bar for talent and seek individuals who are not only at the top of their field but also embody our culture of collaboration and positive impact. If you’re driven by complex challenges that push your expertise and want to shape something truly transformative, this might be your perfect fit.

Follow us on Linked In to keep up to date with new product features and insights from the team.

We’re hiring Python engineers into our Chat pillar (the place where the coolest AI work happens) to build and product ionise intelligent features used by millions. If you want to turn cutting-edge ML into real, shipped experiences, this is your moment.

• Joining a cross-functional product squad in our Chat pillar and collaborating with ML engineers, designers, analysts and other disciplines to develop features that enhance users' financial health.
• Collaborating with senior peers to provide technical insight into upcoming work and helping to pull everyone together to ship.
• Mentoring colleagues to help them grow as engineers and supporting their development.
• Delivering work using agile methodologies and tools like tests, observability, AB-tests, and feature flags.
• Analyzing data to identify problems and generate new ideas using sources such as our database, application logs, and user research data.
• Supporting colleagues through in-hours support and optionally joining the compensated on-call rotation.
• Contributing to cross-cutting concerns that improve engineering efforts.
• Participating in product ideation, user research, design reviews, retrospectives, and more.

• Launching Cleo 3.0 – evolving our AI assistant to be more proactive, personalised and context-aware in how it supports members with their money.
• Building and scaling our transaction enrichment engine so Cleo can understand what transactions mean and turn bank data into intelligent insights.
• Designing and shipping AI-powered features that turn real-time financial data into personalised nudges, analysis and recommendations for millions of users.

You are passionate about making a positive difference in society by improving the financial health of our users. You align with our company values and engineering principles, which drive our ways of working and software delivery. This is a SE4+ position; we’re looking for someone with at least 4 years industry experience using Python.

Cleo is built as a Ruby on Rails monolith with a single React Native app frontend, utilising Type Script. We also leverage Python for machine learning services and Postgre

SQL for our database, hosted on AWS. Our CI/CD pipeline is fully automated, with production deployments on merge via Heroku. Our backend engineers deploy multiple times a week, and we release our frontend app to Google and Apple for review at least once a week. Our code emphasizes quality with peer review and automated testing using Minitest and Circle

CI. We are progressing toward a modular architecture and value input from all levels of the engineering team.

• A competitive compensation package (base + equity) with three annual reviews, aligned to our termly OKR planning cycles.
• Work at a fast-growing tech startup backed by top VC firms (Balderton & EQT Ventures).
• A clear progression plan with support for growth, leadership, and impact.
• Flexibility and a healthy work-life balance.
• Global distribution with hybrid options in London and travel coverage for in-person collaboration.
• Other benefits, including company-wide performance reviews every 4 months, equity top-ups, generous leave, pension, private medical/dental/life cover, parental leave, sabbatical after 4 years, and more.

We also offer OpenAI subscription support, online mental health resources, and a Workplace Nursery Scheme. We strongly encourage applications from people of colour, the LGBTQ+ community, people with disabilities, neurodivergent people, parents, carers, and people from lower socio-economic backgrounds. If there’s anything we can do to accommodate your situation, please let us know.

UK App access:
The Cleo app is no longer downloadable in the UK. Existing users will retain access, but some features will be limited while we focus on delivering value for users most in need. By submitting this application, you confirm that all information provided is true and that you consent to data processing in accordance with Cleo AI's Candidate Privacy Notice.