CRO Developer

CRO Developer £50,000 - £60,000 Hybrid - Manchester (3x days per week) This is a rare opportunity to join a growing digital business where experimentation sits at the heart of decision making. With strong investment in CRO and testing, you will play a key role in creating, deploying, and analysing experiments across high traffic digital platforms. This position offers the chance to make a direct commercial impact while working with modern experimentation tools and technologies. The Company They are an established digital performance business operating across multiple international markets. Through a portfolio of proprietary digital platforms, they manage and optimise the full customer journey from acquisition through to conversion. Their data-driven approach to growth has created a strong culture of experimentation, with significant opportunities to improve customer experiences through testing. Continued expansion has led to investment in building internal CRO and experimentation capability. The Role As a CRO Developer, you will be responsible for building, implementing, and maintaining A/B tests and experiments across a range of digital products. You will work closely with analysts, marketers, designers, and stakeholders to translate hypotheses into live experiments that drive measurable business results. Build and deploy A/B and multivariate tests using HTML, CSS, and JavaScriptDevelop high-quality experiment code across websites and digital platformsWork with CRO and product stakeholders to turn testing ideas into live experimentsImplement personalisation and experimentation campaigns using leading CRO toolsEnsure experiments are technically robust, performant, and accurately trackedDebug, troubleshoot, and optimise testing implementationsCollaborate with analytics teams to support experiment measurement and reportingContribute to experimentation best practices, processes, and governanceIdentify technical opportunities to improve customer journeys and conversion performance Your Skills & Experience Strong commercial experience as a CRO Developer, Front End Developer, or Experimentation DeveloperHands-on experience building and deploying experiments using HTML, CSS, and JavaScriptExperience with CRO and experimentation platforms such as Optimizely, VWO, AB Tasty, Convert, Dynamic Yield, or similarStrong understanding of A/B testing methodologies and experimentation principlesExperience working with web analytics and performance measurement toolsAbility to write clean, efficient, and maintainable front-end codeUnderstanding of customer journeys, user behaviour, and conversion optimisationComfortable working closely with technical and non-technical stakeholdersExperience within performance marketing, ecommerce, lead generation, or high traffic digital environments is beneficial What They Offer £50,000 - £60,000 base salaryBonus schemeHybrid working model with flexibilityOpportunity to help shape a growing experimentation functionExposure to high traffic digital products and large-scale testing programmesStrong career progression opportunitiesCollaborative and data-driven environment How to Apply If you are a CRO Developer with experience building and deploying experiments using HTML, CSS, and JavaScript, apply now to learn more about this opportunity.