Senior Data Scientist

CompanyHarnham

LocationLondon Area, United Kingdom

Posted At1/26/2026

UK Visa Sponsorship Analytics

Occupation Type

Actuaries, economists and statisticians

Occupation Code Skill LevelHigher Skilled

Sponsorship Salary Threshold

£55,100 (£28.26 per hour)

Occupation rate applies

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Description

Senior Data Scientist

London (Hybrid – 3 days per week onsite)

Up to £80,000 + bonus

No visa sponsorship available

We’re hiring a Senior Data Scientist to help shape the next generation of machine-learning-powered products within a commercially focused, data-driven organisation that has undergone a major data transformation in recent years.

This is a high-impact role where you’ll work across the full data science lifecycle — from deep-dive analysis and model development to deploying scalable ML solutions that directly influence strategic and operational decisions.

What you’ll be doing

Build, evaluate and deploy machine learning models to predict and classify customer behaviour
Deliver insights across churn, retention, pricing, fraud, marketing and customer value
Partner with commercial, product and regional teams to optimise business performance
Conduct deep-dive analyses to uncover root causes of key business challenges
Translate complex analysis into clear, actionable insights for senior stakeholders
Contribute to dashboards and self-serve analytics to drive data-led decision making

Act as a subject-matter expert for data science across the business

What we’re looking for

Strong experience with Python and SQL (model building, analysis, visualisation)
Solid understanding of data science techniques and libraries (Pandas, scikit-learn, supervised & unsupervised models, tree-based models)
Proven experience with customer analytics (e.g. churn, CLTV, segmentation) - required
Hands-on experience deploying ML models into production
Exposure to cloud platforms (Azure and/or Databricks) and MLOps practices
Excellent communication skills with the ability to influence non-technical stakeholders
Comfortable working in fast-paced, cross-functional environments

Nice to have

Master’s degree in Computer Science, Data Science, Machine Learning or a related field

Why apply?

Work on real, business-critical data science problems with measurable impact
High visibility role with senior stakeholder exposure
Strong data and AI maturity with room to influence direction and best practice
Competitive salary, bonus and hybrid working

Apply below!