Senior Data Scientist

About the role

Capco's UK Data Practice is looking for a Senior Data Scientist to join its growing team in London (hybrid). You will design and implement data science solutions across financial services, building intelligent systems that drive commercial and customer outcomes while mentoring others in a multi-disciplinary environment. Approved AI tools can be used where appropriate, with sound professional judgement.

Key responsibilities

• Lead end-to-end delivery of data science solutions, including PoCs, MVPs and production deployments.
• Develop and prototype ML models to solve complex business challenges with modern techniques and tooling.
• Work with engineers, domain experts and business teams to turn requirements into deliverables, using approved AI tools to speed up insight.
• Guide and coach data science pods, supporting skill development and solution design.
• Act as subject matter expert on ML architecture, model calibration and productionisation, promoting responsible AI and scalable model governance.

Required profile

• Hands-on experience building and deploying data science solutions in Python and related ML libraries.
• Strong background in applied machine learning, model development and data engineering, with an appreciation of responsible AI.
• Experience leading cross-functional teams and mentoring junior practitioners.
• Ability to explain complex technical concepts clearly to non-technical audiences.

Required skills

• Python and ML libraries
• Cloud environments (Azure, AWS, GCP) and tools such as Spark, Hive and Redshift
• Bonus points: Kaggle or similar competitions, MLOps (CI/CD, model monitoring, DevOps), NLP frameworks such as spaCy or Transformers, Generative AI or LLMs, MSc/PhD in a numerate discipline, financial services or banking experience

What we offer

• Discretionary bonus, pension, health, life and critical illness insurance
• Mental health support and family-friendly leave arrangements
• 8 complimentary backup care sessions and 5 weeks of annual leave
• Minimum 40 hours of training per year and a Business Coach from day one
• Gympass, travel insurance, Tastecard, season ticket loans, Cycle to Work and dental insurance