Frontend Developer Mid-Level
About The Position
In conversion optimisation, an idea is worth nothing until it ships. This role owns exactly that step.
As a frontend developer on the Peaksense CRO team, you'll turn the hypotheses our conversion specialists design into variants running on live client sites. Changing the add-to-cart flow on a product page, simplifying a checkout form, rebuilding a section for mobile, writing a landing page from scratch — that's the job. Every variant you build is tested against real traffic, and the result comes back to you in data within days.
You'll work across very different stacks: from Shopify to Ticimax, from WooCommerce to custom-built sites. So what matters here isn't knowing one framework — it's being able to go into an unfamiliar codebase and change the right thing without breaking anything.
We use AI as part of our daily development workflow, from shipping variant code quickly to working out how an existing site is put together. We expect you to use these tools at an advanced level.
What you'll do
Turn the test hypotheses prepared by CRO specialists into A/B test variants
Build variants in JavaScript and CSS through testing tools (VWO, Optimizely, AB Tasty, Convert or similar)
Develop conversion-focused landing pages for client sites
Implement UX improvements on existing pages: form flows, cart and checkout steps, mobile layout
Set up event tracking and dataLayer implementations through Google Tag Manager
Turn findings from session recordings and heatmaps (Hotjar, Microsoft Clarity) into technical action
Work on page speed and Core Web Vitals improvements
Test compatibility across browsers and devices, and make sure variants don't break measurement
Review test results with the CRO team and plan the next iteration
What we offer
A way of working where you never have to guess at the impact of your code — every variant comes back with data within days. Dozens of sites across different sectors and stacks, and the chance to learn not just how something should be built, but why, by working alongside conversion specialists.