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 JavaScript
Develop high-quality experiment code across websites and digital platforms
Work with CRO and product stakeholders to turn testing ideas into live experiments
Implement personalisation and experimentation campaigns using leading CRO tools
Ensure experiments are technically robust, performant, and accurately tracked
Debug, troubleshoot, and optimise testing implementations
Collaborate with analytics teams to support experiment measurement and reporting
Contribute to experimentation best practices, processes, and governance
Identify technical opportunities to improve customer journeys and conversion performance
Your Skills & Experience
Strong commercial experience as a CRO Developer, Front End Developer, or Experimentation Developer
Hands-on experience building and deploying experiments using HTML, CSS, and JavaScript
Experience with CRO and experimentation platforms such as Optimizely, VWO, AB Tasty, Convert, Dynamic Yield, or similar
Strong understanding of A/B testing methodologies and experimentation principles
Experience working with web analytics and performance measurement tools
Ability to write clean, efficient, and maintainable front-end code
Understanding of customer journeys, user behaviour, and conversion optimisation
Comfortable working closely with technical and non-technical stakeholders
Experience within performance marketing, ecommerce, lead generation, or high traffic digital environments is beneficial
What They Offer
£50,000 - £60,000 base salary
Bonus scheme
Hybrid working model with flexibility
Opportunity to help shape a growing experimentation function
Exposure to high traffic digital products and large-scale testing programmes
Strong career progression opportunities
Collaborative 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.
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