Optimisation Specialist (CRO)

About the role

We’re all about helping our members make the most of their money. And while they go after their goals, you can too. As an Optimisation Specialist (CRO), you’ll be responsible for the end-to-end delivery of onsite A/B and multivariate experiments that improve member experience and conversion across our digital platforms. Acting as both an experimentation lead and front-end delivery specialist, you’ll translate hypotheses into robust, scalable tests that deliver insights and measurable performance.

You’ll design and deliver a structured experimentation roadmap aligned to our personalisation strategy, working closely with analytics, on‑site, and broader digital teams. This is a hands‑on role with a strong technical component, where you’ll use your knowledge of experimentation platforms and confidence in HTML, CSS and JavaScript to build, implement and QA experiment variations to production standard.

Day to day, you'll: