Senior Data Scientist / Optimisation / £70K 90K / London (Hybrid / 2 days in office)A fast-growing UK start-up is looking for a Senior Data Scientist expertise in mathematical optimisation and strong engineering skills. This is a chance to own projects end-to-end, from framing complex business problems to deploying production-ready solutions that drive real-world impact.What you ll be doing: Develop and deploy optimisation models (LP, MIP, heuristics, RL, etc.)Build scalable pipelines using best-in-class engineering practices (CI/CD, testing, containerisation)Integrate optimisation models into live products and client platformsCollaborate closely with engineers and product teamsMentor junior scientists and promote modelling best practices What we re looking for: MSc/PhD in Operations Research, Applied Maths, Computer Science, or related fieldProven experience applying optimisation in production (Pyomo, Gurobi, PuLP, etc.)Strong Python engineering background, ideally with cloud experience (GCP preferred)Solid understanding of ML frameworks to complement optimisationStrong communication and collaboration skills The offer: Hybrid and flexible working (2 days per week in Central London)£70K - £90K base + equity optionsPrivate healthcare and wellbeing supportLearning and development budget This is a fantastic opportunity to join a growing start-up shaping the future of operational decision-making through advanced optimisation and AI.If you re interested, reach out for a confidenti