CRO & Experimentation Manager
London
Hybrid, 3 days in office
£40,000-£55,000 DOE + twice-yearly bonus
A fast-growing digital growth agency is looking for a senior CRO and experimentation specialist to join its dedicated testing practice. This is a client-facing role with real ownership, working on structured experimentation programmes for well-known, high-traffic publishing and subscription brands.
You’ll lead end-to-end CRO programmes, from defining strategy and hypotheses through to test delivery, analysis and insight. You’ll act as a trusted advisor to senior client stakeholders and collaborate closely with CRM, analytics and digital growth teams to drive measurable impact.
What you’ll be doing:
*Owning and shaping CRO and experimentation strategy across multiple clients
*Leading A/B and multivariate testing programmes from idea to insight
*Translating data, user behaviour and research into strong, well-reasoned test hypotheses
*Managing senior client relationships and influencing CRO roadmaps
*Working cross-functionally on wider digital growth initiatives
What we’re looking for:
*Hands-on CRO and UX experience, with the ability to define strategy and execute tests
*Strong experience with testing platforms such as Piano, Zephr, Optimizely or VWO
*Excellent GA4 experience, Adobe Analytics also considered
*Confidence with experimentation logic, statistics and quantitative analysis
*Experience with tools like Amplitude or Mixpanel is a plus
*Curious, self-motivated and genuinely passionate about experimentation
*Agency or client-side background both welcomed
What’s on offer:
*£40,000-£55,000 salary plus twice-yearly bonus
*Hybrid working with flexibility, including working from abroad
*Clear progression and development opportunities
*Regular team socials, lunches and wellbeing initiatives
*Subsidised gym and sports memberships
If you’re excited by experimentation, data-led decision making and working closely with ambitious clients, this role offers real autonomy and impact within a highly collaborative team.