Salary: £85,000 - 95,000 per year Requirements: Strong experience in machine learning/data science (typically 4-8 years) Proven experience building and deploying ML models in production Solid understanding of churn modelling Solid understanding of propensity modelling Strong behavioral data analysis skills Strong Python skills (e.g. Pandas, NumPy, ML libraries) Experience working with real-world, messy datasets Ability to work autonomously in a fast-paced environment Responsibilities: Design and build advanced machine learning models focused on user behaviour prediction Develop churn and propensity modelling strategies Create a scalable model factory capable of generating bespoke models per client Work with complex behavioural event data from mobile applications Collaborate directly with the founders on product and technical direction Continuously experiment, iterate, and improve model performance Own a key part of the data science stack end-to-end Technologies: AI Machine Learning Mobile Python numpy pandas More: We are a fast-paced, early-stage AI startup based in Central London, building cutting-edge technology in the mobile app space. As we grow, we offer meaningful equity, a competitive salary of £85,000 - £95,000, and the opportunity to work alongside experienced founders. Our team thrives in a highly collaborative yet autonomous environment, allowing individuals to shape both the product and the companys future. We embrace hybrid working, providing flexibility with 2-3 days per week in the office. last updated 14 week of 2026