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🥝 Senior Machine Learning Engineer, Personalisation

Cleo | london, United-Kingdom | Posted May 20, 2026

Job Description

About the Role

You’ll be leading technical work within a team of adaptable, creative and product‑focused engineers, training and integrating cutting‑edge machine learning across a variety of products and deploying them into production for millions of users.

What You’ll Be Doing

  • Joining the Machine Learning Growth Personalisation team to build and optimise recommender systems, behavioural models, and other personalization features for the Cleo product.
  • Developing and deploying recommendation, uplift, and multi‑armed bandit models into our production environments using our in‑house ML platform.
  • Working cross‑functionally with backend engineers, data analysts and product managers to integrate ML solutions into the product roadmap.
  • Identifying unknown or poorly understood problems and leading technical initiatives that impact multiple squads.
  • Mentoring and advising colleagues on model selection, architecture an...

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