Lead Data Scientist

Join us as a Lead Data Scientist at Barclays where you'll be primarily responsible for setting clear direction for AI and data science projects, mentoring and developing team members, designing scalable, effective AI solutions and guiding teams through technical transformation.

To be successful as a Lead Data Scientist, you should have experience with:

• Advanced Python Programming
  - Expert knowledge of data science libraries e.g. Num Py, Pandas, scikit-learn, Py Torch
• Machine Learning Expertise
  - Demonstrated experience in designing, training, evaluating, and deploying production-grade ML models
• Software Engineering Excellence
  - Experience building modular, maintainable code with CI/CD pipelines, testing frameworks, and deployment automation
• Technical Leadership
  - Track record of successfully leading data science projects, establishing best practices, and driving technical innovation

Some other highly valued skills may include:

• AI Systems
  - Proven ability to design and implement enterprise-scale AI solutions with consideration for performance, scalability and governance
• People Management
  - Experience in line management, performance reviews, and career development for technical teams
• Strategic Transformation
  - Ability to lead organizational change initiatives and develop long-term technical roadmaps
• Generative AI & Large Language Models
  - Hands‑on experience with transformer architectures
• Specialised Data Science Expertise
  - Experience with advanced techniques such as causal inference, time series forecasting, optimisation techniques, graph networks

You may be assessed on key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen, strategic thinking and digital and technology, as well as job‑specific technical skills.

This role can be based in either London, Glasgow, Manchester or Northampton.

To use innovative data analytics and machine learning techniques to extract valuable insights from the bank's data reserves, leveraging these insights to inform strategic decision‑making, improve operational efficiency, and drive innovation across the organisation.

• Identification, collection, extraction of data from various sources, including internal and external sources.
• Performing data cleaning, wrangling, and transformation to ensure its quality and suitability for analysis.
• Development and maintenance of efficient data pipelines for automated data acquisition and processing.
• Design and conduct of statistical and machine learning models to analyse patterns, trends, and relationships in the data.
• Development and implementation of predictive models to forecast future outcomes and identify potential risks and opportunities.
• Collaborate with business stakeholders to seek out opportunities to add value from data through Data Science.

• To contribute or set strategy, drive requirements and make recommendations for change. Plan resources, budgets, and policies; manage and maintain policies/ processes; deliver continuous improvements and elevate breaches of policies/procedures.
• If managing a team, they define jobs and responsibilities, planning for the department’s future needs and operations, counselling employees on performance and contributing to employee pay decisions/changes. They may also lead a number of specialists to influence the operations of a department, in alignment with strategic as well as tactical priorities, while balancing short and long term goals and ensuring that budgets and schedules meet corporate requirements.
• If the position has leadership responsibilities, People Leaders are expected to demonstrate a clear set of leadership behaviours to create an environment for colleagues to thrive and deliver to a consistently excellent standard. The four LEAD behaviours are: L – Listen and be authentic, E – Energise and inspire, A – Align across the enterprise, D – Develop others.
• OR for an individual contributor, they will be a subject matter expert within own discipline and will guide technical direction. They will lead collaborative, multi‑year assignments and guide team members through structured…