Role: Senior Data ScientistLocation: Cannon Street, Central London (3-Days a week)Salary: £90,000 - £110,000Our client, a global leader in payment services, is seeking a Senior Data Scientist to drive high-impact analytical and ML initiatives. You''ll work at the centre of their data strategy, shaping solutions that directly influence fraud, risk and customer experience. This is a hands-on role where your models will be deployed, scaled and used daily across a major financial ecosystem.What you''ll work onIdentifying high-value Data Science and Machine Learning opportunities across payments, fraud, risk and customer domainsScoping problems, designing experiments and building models end-to-end with engineering and product teamsLeading technical workstreams and guiding junior scientists to ensure high-quality deliveryDeploying models into production environments and monitoring performance to drive measurable business impactPresenting insights and recommendations to senior stakeholders in clear, actionable termsWhat you bringStrong background in Data Science, Machine Learning or advanced analytics with proven end-to-end deliveryAbility to shape ambiguous problems, define analytical approaches and own delivery through to impactConfident stakeholder engagement skills, including workshops, influencing decisions and simplifying complexityHands-on experience with Python, cloud platforms, modern ML tooling and production-grade model deploymentExperience working in fast-paced, data-ric