{"id":197209,"date":"2026-03-05T17:08:59","date_gmt":"2026-03-05T17:08:59","guid":{"rendered":"https:\/\/www.harnham.com\/job\/e1aeb1da-8723-4ba1-d23d-08d5948a7341-experimentation-specialist-london-2\/"},"modified":"2026-03-09T21:17:57","modified_gmt":"2026-03-09T21:17:57","slug":"e1aeb1da-8723-4ba1-d23d-08d5948a7341-experimentation-specialist-london-2","status":"publish","type":"job_listing","link":"https:\/\/www.harnham.com\/job\/e1aeb1da-8723-4ba1-d23d-08d5948a7341-experimentation-specialist-london-2\/","title":{"rendered":"Experimentation Specialist"},"content":{"rendered":"

To Apply for this Job Click Here<\/a><\/strong><\/h4>\n

Experimentation Specialist<\/strong>
London – Hybrid – 4x a week in office
Up to \u00a345,000<\/strong><\/p>\n

This is an exciting opportunity to join a digital function that is investing heavily in experimentation. You will help build a Centre of Excellence, shape testing capability across multiple brands, and play a key role in driving data\u2011led decision making.<\/p>\n

The Company<\/strong>
They are a large multibrand retail group with a broad digital presence and a significant transformation agenda. Their central experimentation function is expanding, with a mission to embed structured testing across digital journeys. You will join a growing team that acts as an internal consultancy, partnering with product, CRM, trading and digital teams to deliver high\u2011quality experimentation.<\/p>\n

The Team<\/strong>
You will work alongside a Senior Experimentation Manager who is building the capability from the ground up. The team is highly cross\u2011functional, supporting stakeholders across the group and enabling them to run meaningful, well\u2011designed tests. With multiple hires planned, there is strong scope for development as the practice scales.<\/p>\n

The Role
You will be responsible for:
* Shaping and supporting the development of a Centre of Excellence for experimentation
* Translating OKRs into structured A\/B testing roadmaps
* Prioritising a pipeline of experiments across multiple digital platforms
* Ideating, designing and executing tests end to end
* Ensuring best\u2011practice methodology and interpreting results with clarity
* Managing technical relationships with implementation teams to ensure tests are set up correctly
* Being hands on with experiment builds, primarily using a leading optimisation platform
* Supporting both website and CRM experimentation where required<\/p>\n

Your Skills and Experience<\/strong>
You will need:
* Strong commercial experience running experimentation programmes
* Hands\u2011on experience setting up and analysing A\/B tests
* Good understanding of experimentation principles, metrics and statistical thinking
* Ability to build, communicate and manage a testing roadmap
* Confidence working cross\u2011functionally and influencing stakeholders
* Experience with GA4 and an optimisation platform such as Optimizely or similar<\/p>\n

Nice to have:
* Experience with user testing tools
* Exposure to both CRM and website experimentation<\/p>\n

What They Offer<\/strong>
* Salary up to \u00a345,000
* Opportunity to play a defining role in building an experimentation Centre of Excellence
* Strong progression potential as the team expands<\/p>\n

How to Apply<\/strong>
If you are interested in this Experimentation Specialist role, please apply today.
<\/p>\n

To Apply for this Job Click Here<\/a><\/strong><\/h4>\n","protected":false},"author":0,"featured_media":0,"template":"","meta":{"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","inline_featured_image":false,"_promoted":"","_job_location":"London","_application":"","_company_name":"Harnham","_company_website":"https:\/\/www.harnham.com\/","_company_tagline":"","_company_twitter":"","_company_video":"","_filled":0,"_featured":0,"_remote_position":0,"_job_salary":"","_job_salary_currency":"","_job_salary_unit":""},"job-categories":[319],"job-types":[60],"class_list":{"0":"post-197209","1":"job_listing","2":"type-job_listing","3":"status-publish","4":"hentry","6":"job-type-permanent"},"yoast_head":"\nExperimentation 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