Principal Machine Learning Engineer - Chat at Cleo

Cleo is seeking a Principal Machine Learning Engineer to join their team. Cleo is a fintech app company that aims to transform people's relationship with money. The company is a unicorn with over $200 million in ARR that grows over 2x year-over-year.

The Principal Machine Learning Engineer will lead technical work within a team of adaptable, creative, and product-focused engineers. They will train & integrate cutting-edge machine learning across a variety of products and deploy them into production for millions of users.

What this role involves:

• Training and fine-tuning models to solve customer problems across our chatbot and the bank transaction data behind it.
• Deploying these models into our production environments using our in-house ML platform, or integrate with LLMs hosted by OpenAI, Anthropic, GCP, AWS and others.
• Working cross-functionally with backend engineers, data analysts, UX writers, product managers, annotation teams, and others to ship features that improve our users’ financial health.
• Taking the initiative to propose & lead technical work towards problems that were previously unknown or poorly understood.
• Driving change at the pillar and chapter level that affects multiple squads.
• Keeping Cleo at the forefront of NLP by driving the adoption of appropriate state-of-the-art techniques and communicating the team’s successes and learnings at the company level & beyond.
• Mentoring & advising colleagues on their choices of models, architecture, and evaluation, promoting best practices for how we use LLMs.

Requirements:

• Experience in industry machine learning roles as a technical leader or principal/staff engineer
• Excellent knowledge of both Data Science (python, SQL) and production tools
• A deep understanding of probability and statistics fundamentals
• Big picture thinking to correctly diagnose problems and productionising research
• Top tier communication skills, to be able to partner with Product and Commercial Leaders
• Industry-leading contributions to your field, communicated through conferences, blogs, talks, or open-source projects

What Cleo offers:

• A competitive compensation package (base + equity) with bi-annual reviews
• A clear progression plan
• Flexibility to ensure they have the balance they need to do their best work
• Work where you work best. Cleo a globally distributed team and have a hybrid approach, if you live in London we’d love you to spend one day a week or more in our beautiful office. If you’re outside of London, we’ll encourage you to spend a couple of days with us a few times per year and we’ll cover your travel costs, naturally.
• Generous pay increases for high-performing team members
• Equity top-ups for team members getting promoted
• 25 days annual leave a year + public holidays (+ an additional day for every year you spend at Cleo, up to 30 days)
• 6% employer-matched pension in the UK
• Private Medical Insurance via Vitality, dental cover, and life assurance
• Enhanced parental leave
• 1 month paid sabbatical after 4 years at Cleo
• Regular socials and activities, online and in-person
• We'll pay for your OpenAI subscription
• Online mental health support via Spill
• Workplace Nursery Scheme