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# Product Data Scientist - Recommendation Systems

- **Company:** Harnham
- **Location:** Brighton and Hove, UK
- **Experience:** Expert
- **Salary:** £90,000.0
- **Contract:** Permanent contract
- **Skills:** A/B Testing, Artificial Intelligence, Python (Programming Language), Recommender Systems, Standard Sql, Large Language Models, Data Analytics
- **Published:** August 26, 2026
- **Apply:** https://www.collegerecruiter.com/job/2815088843-product-data-scientist-recommendation-systems

## About the Role

* 6+ years' experience in Data Science/Decision Science
 * Strong SQL and Python.
 * Experience with practical LLM/AI applications.
 * Strong experimentation and A/B testing experience.
 * Excellent stakeholder management and commercial thinking.
 * Experience working closely with Product and Engineering teams.

If you're looking for a role with genuine product ownership, modern technology and the opportunity to influence AI strategy within a growing data organisation, I'd be happy to tell you more.

## Description

Want to own product decisions rather than just analyse them?

Interested in building AI-powered customer experiences from idea to production?

Looking for a role where Data Science, Product and Commercial impact genuinely come together?

Brighton | Hybrid (3 days in office) | Up to £90K

I'm partnering with one of the world's leading online marketplaces, currently investing heavily in Data & AI as they transform into a truly product-led organisation.

They're hiring a Product/Decision Scientist to join one of six cross-functional product squads, working alongside Product Managers, Engineers and Designers to build customer-facing features, influence commercial decisions and develop AI-powered experiences.

Rather than sitting in a central analytics function, you'll own data within your squad, helping shape roadmap decisions from idea through to delivery and measuring the impact of what gets built.

Responsibilities

 * Partner with Product and Engineering to solve commercial and customer problems.
 * Lead experimentation, opportunity sizing and product performance analysis.
 * Build recommendation models, segmentation solutions and AI-powered product features.
 * Develop lightweight data products, automation and proof-of-concepts.
 * Apply ML and LLMs to improve customer experiences and internal workflows.
 * Present clear, data-driven recommendations to senior stakeholders.

Requirements

 * 6+ years' experience in Data Science/Decision Science
 * Strong SQL and Python.
 * Experience with practical LLM/AI applications.
 * Strong experimentation and A/B testing experience.
 * Excellent stakeholder management and commercial thinking.
 * Experience working closely with Product and Engineering teams.

If you're looking for a role with genuine product ownership, modern technology and the opportunity to influence AI strategy within a growing data organisation, I'd be happy to tell you more.


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