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Jellyfish

Global digital marketing performance agency

Conversion Rate Optimisation Manager

Growth MarketingPosted on Nov 12
Full-timeParis, France€38k - €42k /yr

About the Job

Requirements

  • Fluency in French and professional-level English is required for the scope of work and client teams.
  • Over 2 years of experience in end-to-end experience optimisation or conversion rate optimisation, including defining, launching, and evaluating A/B and Multivariate Testing campaigns using A/B testing platforms or website optimisation tools.
  • Ability to analyse user behaviour and map customer journeys from initial discovery to final measurement; experience in luxury, beauty, or fashion is desirable.
  • Proficiency in web, app, and product analytics, combined with qualitative research tools such as heatmapping, form analytics, and live user testing, to uncover user behaviour insights.
  • Ability to translate complex quantitative and qualitative data into actionable findings, recommendations, and optimisation roadmaps.
  • Ability to collaborate with appropriate colleagues to evaluate options and find practical solutions.

Responsibilities

  • Lead client meetings with a key luxury account to translate business needs into strategic optimisation roadmaps aligned with client goals, driving measurable value and high client satisfaction.
  • Serve as the subject matter expert in conversion rate optimisation, experience optimisation, measurement, and marketing analytics across the client's brands.
  • Execute full-lifecycle user journey audits, research, continuous experimentation, and cross-channel activation campaigns to deliver actionable insights.
  • Define custom reporting and data-mapping requirements, collaborating cross-functionally to align technical solutions and timelines with strategic rationale.
  • Provide mentorship and escalation support for junior team members to foster professional growth and resolve operational challenges.
  • Develop and implement experience optimisation and conversion rate optimisation strategies for a French multinational holding company specialising in luxury goods.

Desired Qualifications

  • Experience working in the luxury, beauty, or fashion industries.

About the Company

Jellyfish

Global digital marketing performance agency

Jellyfish is a global marketing performance company that helps brands grow in the digital world. It serves a diverse mix of clients—from established corporations to startups—across multiple industries. The company combines creative talent, strategic partnerships, and technology to deliver tailored marketing strategies that leverage data, media, and digital channels to boost brand performance. Jellyfish earns revenue through a mix of service fees, project-based engagements, and long-term partnerships. Its approach centers on data-driven decision making, cross-channel execution, and ongoing collaboration with clients and partners. The goal is to help brands thrive online by achieving measurable performance improvements across multi-platform campaigns.

Company size
1,001-5,000
Company stage
Acquired
Total funding
$5M
Headquarters
London, United Kingdom
Founded
2005

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