Conversion Rate Optimisation (CRO) Specialist

About This Role

This role is for a data-driven Conversion Rate Optimisation Specialist to accelerate on-site and in-app conversion performance across a dual-sided marketplace. Reporting to the Head of Growth Marketing, you will design, run, and scale a structured experimentation programme across 14 markets, multiple languages, and multiple products, turning customer behaviour insights into measurable revenue impact.

Responsibilities

• Build and execute a continuous A/B and multivariate testing roadmap to improve conversion across the full B2C customer journey, from acquisition to booking
• Embed a rigorous test-and-learn discipline across Product, UX, and Marketing, ensuring every major journey change is validated with data before it scales
• Own the end-to-end CRO testing roadmap, from hypothesis generation and prioritisation through to test design, execution, and analysis across web and app
• Run and localise experiments consistently across 14 countries and languages, accounting for market-specific behaviour while protecting statistical rigor
• Identify and resolve conversion friction across the marketplace's B2C funnels, partnering with Product and Data teams to prioritise the highest-impact opportunities
• Translate test results into clear, actionable insights and recommendations for senior stakeholders, building a shared knowledge base of what drives conversion
• Partner closely with Product, UX/Design, Data, and Performance Marketing to align experimentation priorities with broader growth and commercial goals

Requirements

• 3+ years of hands-on Conversion Rate Optimisation experience in the Tech sector, ideally within a multi-market, multi-language, multi-product business (mandatory)
• Highly analytical, with a proven track record of using data and experimentation to challenge assumptions and drive measurable commercial outcomes
• A true "doer" who combines the strategic thinking to prioritise the right tests with the hands-on drive to run them end-to-end
• Highly structured in managing a testing roadmap across complexity and scale, yet scrappy and agile in getting experiments live quickly
• English fluency is mandatory

Nice to have:

• Marketplace or SaaS background
• Any other European language

Benefits

• 28 days holiday, plus bank holidays
• Monthly 40 EUR/GBP Treatwell vouchers
• Mental health support through our partnership with Open-Up
• Market-specific benefits

About the Company

Treatwell is a team of 700 people across Europe. They are an industry-smart salon management software, connected to Europe's leading bookings platform, working with over 95,000 salon partners across 14 countries, processing over 8 million bookings every month. They are on an exciting journey to digitally revolutionise the hair and beauty community.