Senior Data Scientist

Harnham · London, London

Senior Data Scientist at Harnham, based in London, London. This is a permanent role.

Salary
Competitive
Location
London, London
Contract
Permanent
Posted
13 hours ago
Closes
21 Nov 2026
Sector
Data Analyst

Reference https://www.harnham.com/job/e1aeb1da-8723-4ba1-d23d-08d5948a7341-senior-data-sci

About the role

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Senior Data Scientist
London 3 days a week

Join a fast-growing fintech that is investing heavily in its data science and risk capabilities. This role offers the opportunity to build impactful machine learning models from the ground up while working on business-critical challenges in lending and forecasting.

The Company
A profitable global fintech with strong growth, recent investment, and expanding international operations. They are continuing to scale their data and analytics function while modernising their technology and modelling infrastructure.

The Role

  • Build and deploy machine learning models across the full lifecycle
  • Develop and enhance Probability of Default (PD) models and scorecards
  • Create revenue forecasting models using techniques such as XGBoost and CatBoost
  • Partner with business stakeholders to solve complex commercial problems
  • Support the evolution of data science infrastructure and best practices

Your Skills & Experience

  • Strong commercial data science experience within fintech, lending, or financial services
  • Experience with credit risk modelling and/or revenue forecasting
  • Strong Python and SQL skills
  • Experience with machine learning techniques, including boosting methods
  • Ability to translate business problems into scalable data solutions

To Apply for this Job Click Here

Reference: https://www.harnham.com/job/e1aeb1da-8723-4ba1-d23d-08d5948a7341-senior-data-sci · Posted 13 hours ago · Closes 21 Nov 2026 · Listed via Harnham

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