Lead CRO Developer

Role Overview

We are looking for a highly experienced, hands-on Lead CRO Developer to build and deliver A/B and multivariate experiments across our client accounts. This is fundamentally a development role. The majority of the role is hands-on coding, implementation, QA and troubleshooting of experiments, not CRO strategy, programme management, or roadmap ownership.

What You Will Do

Build A/B and multivariate experiments from supplied concepts, designs and test specifications. Write clean, robust JavaScript (ES6+), HTML5 and CSS3 to create experiment variations and functionality.

Why It Might Be a Fit

A genuinely hands-on developer who enjoys building experiments and wants to remain close to the code. Senior enough to work independently and take ownership of technically difficult builds.

Requirements

• Advanced JavaScript (ES6+) skills
• Strong HTML5 and CSS3 development skills
• Experience building experiments in Optimizely Web
• Experience with Optimizely Full Stack / Feature Experimentation
• Experience personally building and shipping A/B and multivariate tests in live ecommerce or enterprise environments
• Strong experience developing and debugging experiments on React and Next.js applications
• Experience with GTM and/or Tealium, event tracking and data layers as they relate to experimentation
• Ability to work confidently across different CMSs, ecommerce platforms, and proprietary client technology stacks

Benefits

• Competitive salary
• Enhanced maternity/paternity pay
• Access to Perkbox employee benefits platform
• Hybrid office/home working (office Tuesday and Thursdays)
• Regular business updates and company socials
• Opportunities for professional growth and career development
• 25 days annual leave
• Being part of a dynamic, fast-paced agency environment
• Working with a team of incredibly talented professional colleagues