via reed · 21 May 2026 ·16 days ago

Experimentation Specialist

Harnham - Data & Analytics Recruitment
London Full-time GBP 35,000 – 45,000
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Experimentation Specialist


London | Up to £45,000 plus benefits | Hybrid working

A great opportunity to join a growing experimentation function within a large, digital-first organisation. This role offers the chance to shape testing strategy, influence roadmaps, and make a measurable impact across multiple brands and digital touchpoints. You will be joining at an exciting stage as they build out a dedicated team.

The Company


They are a well-established, multi-brand retail group with a significant presence in ecommerce and digital product. The organisation is investing heavily in experimentation, data and insights to drive performance and enhance customer experience across their online platforms. With a fast-paced environment and a strong appetite for testing, they offer the chance to embed experimentation culture across a complex digital ecosystem.

The Role

  • Support the build of a centralised experimentation function.

  • Translate commercial objectives into experimentation roadmaps.

  • Prioritise tests based on value, business context and feasibility.

  • Lead ideation, design and end-to-end execution of A/B tests.

  • Partner with technical teams to ensure robust implementation.

  • Analyse test results and communicate insights to stakeholders.

  • Distinguish CRM experimentation from website CRO and support both areas.

  • Contribute to training and enablement across digital teams.

Your Skills and Experience
  • Strong commercial experience running experimentation programmes.

  • Hands-on experience setting up and analysing A/B tests.

  • Understanding of experimentation principles, digital metrics and measurement.

  • Experience with platforms such as GA4, Optimizely or similar tools.

  • Ability to create, manage and communicate experimentation roadmaps.

  • Comfortable working cross-functionally within product, digital, CRM and tech teams.

  • Able to work independently and prioritise effectively.

  • Experience with user testing platforms is an advantage.

What They Offer
  • Salary up to £45,000 depending on experience.

  • Hybrid model with four days in the central London office.

  • 20 days holiday plus bank holidays.

  • Pension scheme with employer and employee contributions.

  • Access to wellbeing, health and financial support services.

  • Retail discounts across all brands.

  • Discounted gym membership and fitness support.

  • Employee recognition and reward schemes.

  • Internal learning platform with extensive training content.

  • Opportunities to progress as the experimentation function grows.

How to Apply
If you are passionate about experimentation and want to help shape a growing team, apply with your CV today.

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