Data Scientist, Credit Risk – FinTech

Company: Harnham
Apply for the Data Scientist, Credit Risk – FinTech
Location: London
Job Description:

Want to build credit risk models that directly influence lending decisions?

Looking for broader ownership than a traditional modelling role offers?

Excited by the opportunity to work across modelling, deployment and decision science?

A growing UK FinTech is hiring a Data Scientist to join its Decision Science team. The business has developed an innovative lending model that provides customers with a more transparent and accessible alternative to traditional credit products. With around 100 employees, a strong culture and a collaborative environment, this is an opportunity to have direct influence on how lending decisions are made across the business.

This role focuses on developing and enhancing credit risk models, with a particular emphasis on scorecards, affordability and decisioning. You’ll work across the entire model lifecycle, giving you far greater ownership and commercial exposure than a typical modelling position.

Key Responsibilities

  • Develop and improve credit risk scorecards and lending models
  • Build solutions using Open Banking and bureau data
  • Enhance model performance through feature engineering and analysis
  • Support affordability modelling and lending decision optimisation
  • Deploy and monitor models across production environments
  • Partner with underwriting, finance and credit strategy teams
  • Contribute to IFRS9 and wider risk modelling initiatives

Working Model: Hybrid, 2 days per week in Central London office

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Posted: October 17th, 2026