> Markdown version of [/jobs/ext/2803891-frontend-engineer](https://www.wearedevelopers.com/jobs/ext/2803891-frontend-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Frontend Engineer - **Company:** RedCat Digital - **Location:** Greater London, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** A/B Testing, Data Analysis, Test Data, Front End Software Development - **Published:** September 9, 2026 - **Apply:** https://www.collegerecruiter.com/job/2856364122-frontend-engineer ## About the Role * Ideally worked on experimentation, A/B testing and conversion rate optimisation (CRO) * Ideally come from ecommerce organisations * A commercial mindset - comfortable challenging stakeholders, not just taking instruction * Confidence communicating with technical and non-technical stakeholders * Curiosity, problem-solving instinct and comfort working independently in a small, senior team ## Description Working for a market leading ecommerce company with revenues in the hundreds of millions, the Senior Frontend Engineer will help shape how customers experience their website and app. You'll bring test plans to life - building A/B experiments, QA-ing them thoroughly, then digging into the results with analysts to understand what's working and why. This is a hands-on role sitting within a small engineering team embedded in Marketing, working closely with Ecommerce, Analytics and Product. The Frontend Engineer will be responsible for: * Translating test plans into robust, production-ready A/B tests * Analysing live test data to assess performance and iterate * Setting engineering standards and reviewing code for quality and scalability * Bringing genuine commercial thinking - challenging test plans, not just executing them * Collaborating closely with Ecommerce, Marketing, Product and Engineering stakeholders, This is a great opportunity for a talented Front Engineer to join a household name brand and work on what is a huge revenue driver for the business. They can offer great career progression and the opportunity to mentor other Engineers straight away. ## Related Videos - [The Innovation Formula: Fast Prototyping, Data Analysis, and Real User Insights](https://www.wearedevelopers.com/videos/1421-the-innovation-formula-fast-prototyping-data-analysis-and-real-user-insights) - [Frontend Performance Testing in practice](https://www.wearedevelopers.com/videos/8-frontend-performance-testing-in-practice) - [Dirty Tests And How To Clean Them](https://www.wearedevelopers.com/videos/515-dirty-tests-and-how-to-clean-them) - [Bringing the power of AI to your application.](https://www.wearedevelopers.com/videos/1010-bringing-the-power-of-ai-to-your-application) - [Data Science in Retail](https://www.wearedevelopers.com/videos/586-data-science-in-retail) - [Modern Data Architectures need Software Engineering](https://www.wearedevelopers.com/videos/1030-modern-data-architectures-need-software-engineering) ## Related Articles - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front) - [Dev Digest 113 - Debugging above the cloud](https://www.wearedevelopers.com/magazine/422-dev-digest-113-debugging-above-the-cloud) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 139 - Soft and hard queries](https://www.wearedevelopers.com/magazine/487-dev-digest-139-soft-and-hard-queries) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)