CRO Developer

CRO Developer 6 Month Contract Outside IR35 £300-350 Day Rate Fully Remote (UK-Based) This is a high-impact CRO Developer contract where you will play a pivotal role in accelerating experimentation and conversion performance across a well-established digital product. The project is ideal for someone who thrives in hands-on environments, can move quickly from insight to implementation, and wants to see a direct link between their work and commercial outcomes. The Company They are a digital-first marketplace operating in a highly competitive consumer space, with a strong technology-led culture and an established international presence. The business has reached a mature stage of growth and is now heavily focused on optimisation and revenue performance. With distributed engineering teams and a strong product mindset, they prioritise experimentation, data-driven decision-making, and rapid iteration. The Role and Deliverables

• Own and deliver a CRO and experimentation roadmap across web and digital touchpoints.
• Design, build, and implement A/B and multivariate tests using modern experimentation platforms.
• Work hands-on with front-end code to deploy experiments in a React and Next.js environment.
• Partner with product, engineering, and analytics teams to identify and prioritise high-impact tests.
• Analyse experiment performance using web analytics tools and translate results into actionable insight.
• Contribute new ideas and optimisation opportunities across the wider customer journey, including non-web channels where relevant.

Your Skills & Experience

• Strong experience as a front-end developer with a focus on CRO and experimentation.
• Proven capability working in data-led optimisation or experimentation environments.
• Deep understanding of web analytics and experiment measurement, including tools such as GA4 or similar.
• Hands-on experience with CRO platforms such as VWO, Optimizely, GrowthBook, or equivalent.
• Comfortable operating in fast-paced, hands-on teams with minimal onboarding.
• Background in agency, marketplace, or high-growth digital businesses is highly relevant.

How to Apply If you are a CRO-focused front-end developer looking for a strategic, hands-on contract with clear commercial impact, please apply with your CV.