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We are currently looking for a Data Scientist to join a fast-paced, early-stage AI startup building cutting-edge technology in the mobile app space. Reporting directly into the CTO, this Lead Data Scientist will play a critical role in shaping the company’s core product and driving real commercial impact from day one. As a Data Scientist, you’ll be working at the heart of the business, designing and deploying machine learning models that predict user behaviour, helping clients optimise for revenue, retention, and long-term value rather than just installs. This Lead Data Scientist will take ownership of a key part of the platform, working closely with the founders to turn complex data into actionable, high-impact solutions. Day-to-day, the Data Scientist will be building models, experimenting with new approaches, and continuously improving performance across customer datasets. You’ll be operating in a highly collaborative but autonomous environment where your work directly influences product direction and business outcomes.
Job Responsibility:
Design and build advanced machine learning models focused on: User behaviour prediction
Churn and propensity modelling
Develop 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
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
Propensity modelling
Behavioural data analysis
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
Nice to have:
Experience in mobile apps, subscription products or growth analytics
Exposure to experimentation / A/B testing environments
Experience working in early-stage startups
Familiarity with building scalable ML systems or pipelines
Commercial mindset – understanding how models impact revenue
What we offer:
Equity
Opportunity to work alongside experienced founders
High ownership and autonomy from day one
Exposure to cutting-edge machine learning challenges