Haystack
← Back to Jobs
Technology

Product Data Scientist - Recommendation Systems

Harnhambrighton, england🇬🇧United KingdomPosted 2 Aug 2026

Quick Overview

Work Type
Hybrid
Level
Mid Senior

Job 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.

Skills

SQL
LLM
Python
Stakeholder Management

Similar jobs