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Posted 21 July, 2026

Senior Data Scientist

Harnham - Data & Analytics Recruitment
London, ENG, GB Full Time

Job Description

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SENIOR DATA SCIENTIST

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UP TO £70,000 + EQUITY

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LONDON

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HYBRID WORKING - 2 DAYS PER WEEK

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Join a fast-growing fintech redefining lending through smarter, more personalised credit decisions. Take ownership of end-to-end modelling and shape how data directly drives real-world lending outcomes.

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THE COMPANY

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A UK-based fintech lender building an innovative consumer lending product focused on flexibility and affordability. The business is customer-first, using income and affordability data to make fairer lending decisions beyond traditional credit scores. With a proven model in place and strong growth plans, they offer a unique opportunity to join at an early but established stage.

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THE ROLE

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As a Senior Data Scientist, you will take ownership of credit risk and decisioning models, working across the full lifecycle from development through to deployment. This is a highly hands-on role with significant influence on how data drives commercial lending decisions.

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Specifically, you can expect to be involved in:

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  • Building and optimising credit risk models, including scorecards and machine learning approaches
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  • Deploying models into production and monitoring performance over time
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  • Developing data pipelines and integrating multiple data sources into decisioning frameworks
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  • Working closely with stakeholders to ensure models directly influence lending strategy and outcomes
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SKILLS AND EXPERIENCE

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  • Strong experience developing credit risk models, including scorecards and ML models
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  • Proficiency in Python and SQL for data analysis, modelling, and data manipulation
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  • Experience working with cloud-based infrastructure (e.g. AWS)
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  • Understanding of model deployment and production environments
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  • Ability to translate technical work into commercial lending and commercial insights
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  • Familiarity with financial services data such as bureau, Open Banking or affordability data
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BENEFITS

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The successful Senior Data Scientist will receive up to £70,000 and a comprehensive benefits package.

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