Conversion Rate Optimisation Specialist

Jellyfish; Paris; Hybrid; EUR 38,000 - 42,000; Full time

Benefits offered by this job

Discretionary annual bonus

Hybrid work model up to 60% remote

Flexible working hours

14 weeks paid parental leave (primary)

4 weeks paid leave (secondary)

Learning stipend €1,000 for courses

Job summary

Jellyfish in Paris is seeking a CRO/Experience Optimisation professional to lead high-impact campaigns for a luxury client. You will drive experimentation, measurement, and reporting across web and app, translating business needs into actionable roadmaps while mentoring junior teammates.

The role offers a hybrid Paris-based working model with a competitive gross salary and opportunities to progress toward a CRO Senior Manager position.

Qualifications

• Fluency in French and professional-level English required.
• 2+ years of end-to-end experience in experience optimisation or CRO, including A/B/MVT campaigns.
• Ability to map customer journeys and analyse user behaviour in luxury/fashion sectors.

Responsibilities

• Lead client meetings to translate business needs into optimisation roadmaps.
• Serve as subject matter expert in CRO, experience optimisation, analytics and measurement.
• Conduct user journey audits, experimentation, and cross-channel campaigns for actionable insights.
• Define reporting and data-mapping needs and align timelines with strategy.
• Mentor junior team members and support operational challenges.

Skills

French

English

CRO

A/B testing

Multivariate testing

Web analytics

Client management

Tools

A/B testing platforms

Job description

At Jellyfish, we believe in the power of diverse perspectives and inclusive collaboration. We welcome individuals who excel in collaborative, varied teams and value the unique contributions that each person brings to the table.

Jellyfish is a global digital marketing agency; a unique fusion of tech enthusiasts, creative minds, and media and data experts all united to empower our clients along their digital journey. Our commitment to embracing diverse perspectives fuels our innovation and strategies that challenge the status quo, reinvent media activation, and craft influential stories for our global clients and their customers. Join us in shaping a future where business growth and personal fulfilment go hand in hand.

Job Description

Reporting to the Experience Optimisation Director, you will play a key role in developing and implementing experience optimisation and conversion rate optimisation (CRO) strategies for a French multinational holding company specialising in luxury goods.

We take pride in delivering data-led experimentation, personalisation, and deep analytical insights for premier global brands, setting us apart in the industry. At Jellyfish, we are committed to fostering professional growth. Your career path could lead to progression into a CRO Senior Manager position with future potential to lead the practice.

This is a hybrid position, based out of our Paris office. The gross annual salary range for this position is between EUR 38,000-42,000, and the final offer is dependent on experience.

Responsibilities

• Lead client meetings with a key luxury account to translate their business needs into strategic optimisation roadmaps aligned with their goals, driving measurable value and high client satisfaction.

• Be the subject matter expert in conversion rate optimisation (CRO), 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.

Qualifications

• Fluency in French and professional-level English is required given the scope of work and the client teams.

• Over 2 years of experience in end-to-end experience optimisation or CRO, including defining, launching, and evaluating A/B and Multivariate Testing (MVT) Campaigns using A/B testing platforms or website optimisation tools.

• The ability to analyse user behaviour and map customer journeys from initial discovery to final measurement, ideally within the luxury, beauty or fashion industries.

• Proficiency in web, app and product analytics combined with qualitative research tools (heatmapping, form analytics, live user testing) to uncover user behaviour insights.

• Analytical and strategic mindset, with the ability to translate complex quantitative and qualitative data into actionable findings, recommendations, and optimisation roadmaps.

• You love getting to know your clients, developing long-lasting relationships and adding value to their business.

• When faced with a problem, you collaborate with the appropriate people to evaluate different options find practical solutions.

Note: We emphasise skills, expertise and behavioural attributes over years of experience and traditional degrees. If you want to join our collaborative team, we invite you to apply today with your resume in English.

Additional Information

Join Jellyfish and experience a workplace where we prioritise your growth, celebrate your contributions, and empower you to tailor your work environment to suit your needs.

Reward: You’ll be eligible to join our discretionary annual bonus scheme.

Custom Work Environment: Work remotely for up to 60% of your days and shape your day between 8am. and 6:30pm with flexible working hours.

Family Support: Enjoy 14 weeks of paid leave for primary caregivers and 4 weeks of paid leave for secondary caregivers. We also provide £1000 (or equivalent) towards courses for returning primary caregivers to support your transition back into work.