Experimentation specialist

Harnham; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading retail group in the UK is seeking an Experimentation Specialist to join their growing Centre of Excellence. This role involves supporting the development of experiments, translating business objectives into testing roadmaps, and delivering A/B tests across digital platforms. Candidates should have solid experience with experimentation programs and tools like Optimizely. This position is ideal for someone who is strategic and communicative, capable of delivering hands-on experimentation while working independently.

Qualifications

• Experience running and managing experimentation programmes.
• Hands-on experience setting up and analysing A/B tests.
• Knowledge of experimentation tools like Optimizely.
• A solid understanding of metrics, experimentation principles and test design.
• The ability to build and communicate clear testing roadmaps.
• Confidence working independently and engaging with cross-functional teams.
• Strategic thinking beyond simple test execution.
• Nice to have: experience with user testing platforms; exposure to CRM experimentation and website CRO.

Responsibilities

• Support the development of a new Centre of Excellence for experimentation.
• Translate business objectives into structured testing roadmaps.
• Prioritise, plan, design and deliver A/B tests across multiple digital platforms.
• Run hands-on experiment builds using Optimizely.
• Analyse results and communicate insights to stakeholders.
• Ensure data quality through readiness checks and tracking validation.
• Collaborate with technical teams for accurate implementation.
• Support enablement activities to upskill cross-functional teams.

Skills

Commercial experience running and managing experimentation programmes

Hands‑on experience setting up and analysing A/B tests

Knowledge of experimentation tools such as Optimizely or similar platforms

Solid understanding of metrics, experimentation principles, and test design

Ability to build and communicate clear testing roadmaps

Confidence working independently and engaging with cross‑functional teams

Strategic thinking beyond simple test execution

Strategic thinking

Tools

Optimizely

Job description

This is an exciting opportunity to join a growing Centre of Excellence and play a key role in shaping how digital experimentation is delivered across a large, multi-brand retail group. If you enjoy end-to-end ownership, strategic thinking and hands‑on test execution, this role offers the scope and autonomy to make a real impact.

Company

They are a major retail group operating a diverse portfolio of well‑known brands, with a strong focus on digital performance and customer experience. They are investing heavily in experimentation and are building a dedicated function to elevate testing maturity across the organisation. The team works collaboratively with product, CRM, data and engineering, acting as an internal consultancy for all things experimentation.

Role

In this Experimentation Specialist position, you will

• Support the development of a new Centre of Excellence for experimentation
• Translate business objectives into structured testing roadmaps
• Prioritise, plan, design and deliver A/B tests across multiple digital platforms
• Run hands‑on experiment builds, primarily using Optimizely
• Analyse results and communicate insights to stakeholders across the business
• Ensure data quality through readiness checks, tracking validation and troubleshooting
• Collaborate with technical teams to deliver accurate implementation
• Support enablement activities to upskill cross‑functional teams
• Contribute to experimentation governance, process improvements and best practice

Your Skills and Experience

You will be a strong fit if you have

• Commercial experience running and managing experimentation programmes
• Hands‑on experience setting up and analysing A/B tests
• Knowledge of experimentation tools such as Optimizely or similar platforms
• A solid understanding of metrics, experimentation principles and test design
• The ability to build and communicate clear testing roadmaps
• Confidence working independently and engaging with cross‑functional teams
• Strategic thinking beyond simple test execution

Nice to have

• Experience with user testing platforms
• Exposure to both CRM experimentation and website CRO

They are not looking for someone purely technical, purely strategic, or heavily agency‑conditioned.

They want a rounded experimentation specialist who can think, deliver and communicate effectively.

How to Apply

Apply by sending your CV to Joe by the link below