Lead CRO Engineer - Hybrid & Profit Share

Jet2.com Limited; Leeds; Hybrid; GBP 70,000 - 95,000; Full time

Benefits offered by this job

Profit sharing

Jet2.com flight discounts

Jet2holidays discounts

Job summary

Jet2.com Limited is seeking an experienced Lead CRO Developer to join the Digital Experience team and drive experimentation across our websites. The role focuses on delivering high-quality, scalable tests, developing JavaScript/HTML/CSS experiences, and partnering with UX, Analytics and Marketing to transform ideas into measurable opportunities.

You will champion CRO methodologies, maintain performance and accessibility standards, and mentor developers while shaping our testing platforms such as

Qualifications

• Extensive experience delivering A/B tests and personalization in a commercial setting.
• Strong knowledge of JavaScript, HTML and CSS and modern web development principles.
• Experience with experimentation platforms such as Optimizely, Adobe Target, VWO, AB Tasty or similar.
• Proven leadership experience including mentoring developers and leading technical discussions.

Responsibilities

• Lead the technical delivery of A/B and multivariate tests across digital platforms.
• Develop customer experiences using JavaScript, HTML and CSS for experiments and personalisation.
• Collaborate with UX, Analytics and Marketing to translate ideas into measurable experiments.
• Promote CRO best practices, coding standards and governance for reliable test implementations.
• Ensure experiments optimise performance with minimal impact on Core Web Vitals and accessibility.
• Mentor developers, conduct code reviews and evolve development standards.

Skills

A/B testing

JavaScript

HTML

CSS

Optimizely

Adobe Target

Server-side experimentation

Leadership

Cross-functional collaboration

Performance optimization

Tools

Optimizely

Adobe Target

VWO

AB Tasty

Job description

Jet2.com Limited is seeking an experienced Lead CRO Developer to join the Digital Experience team and drive experimentation across our websites. The role focuses on delivering high-quality, scalable tests, developing JavaScript/HTML/CSS experiences, and partnering with UX, Analytics and Marketing to transform ideas into measurable opportunities.

You will champion CRO methodologies, maintain performance and accessibility standards, and mentor developers while shaping our testing platforms such as