CRO Developer

This is an excellent opportunity for a CRO Developer to join a well-established experimentation programme and build hands-on experience across a portfolio of high-traffic digital products. You’ll focus on designing, building and deploying A/B tests while working closely with an experienced CRO function, with a clear pathway into a future CRO Manager position. The Company They are a leading digital marketing and lead generation business operating across multiple international markets. Through a portfolio of digital products, they acquire and convert high-intent customers across a range of customer journeys and sectors. With a strong focus on data, experimentation and performance marketing, they have built a mature conversion rate optimisation programme supported by extensive historical testing data and proven experimentation frameworks. The business continues to invest heavily in optimisation and digital growth. The Role You will play a hands-on role in delivering conversion rate optimisation initiatives across multiple websites and customer journeys. Responsibilities include:

• Building and deploying A/B and multivariate tests using JavaScript, HTML and CSS
• Implementing experiments through platforms such as Convert.com and Optimizely
• Developing test variations and front-end changes to improve conversion performance
• Analysing experiment results and identifying actionable insights
• Working closely with marketing, product and development teams
• Using behavioural and performance data to identify optimisation opportunities
• Managing multiple experiments across different digital products
• Supporting the evolution of an established experimentation programme
• Contributing to continuous improvements in customer journeys and conversion performance

• Strong commercial experience within Conversion Rate Optimisation
• Hands-on experience building and implementing A/B tests
• Strong JavaScript, HTML and CSS skills
• Experience using experimentation platforms such as Convert.com, Optimizely, VWO or similar
• Understanding of experimentation methodology and statistical analysis
• Experience analysing customer behaviour and conversion funnels
• Ability to develop data-driven hypotheses and translate them into test plans
• Strong analytical and problem-solving skills
• Experience working on high-traffic websites is beneficial
• Experience within lead generation or performance marketing environments is advantageous

• Hybrid working with 2-3 days per week in the office
• Opportunity to work on high-traffic digital platforms
• Exposure to international markets and multiple customer journeys
• Established experimentation framework and testing history
• Significant ownership and autonomy
• Clear progression path towards a CRO Manager position
• Collaboration with experienced CRO, marketing and product specialists