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Julien KleinJK

Julien Klein

Head of Growth – Acquisition & Data-Driven

€750/day
14 projects
Paris, FR
8-15 years

Average response time: 24 hours

Freelancer profile translated to English.
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About Julien

I help startups and scale-ups accelerate their acquisition through multi-lever growth strategies (Meta Ads, Google Ads, funnel, data) and a performance-oriented Head of Growth approach.

For over 10 years, I have been supporting giants like Amazon, Google, Accor, and AXA, as well as scale-ups like Franklin, Chance, and Les Sherpas, in structuring their acquisition, optimizing their funnels, and maximizing their ROI.


🎯 Expertise

• Acquisition strategies (SEA, SEO, Social Ads, Display, Affiliation)
• Growth marketing & funnel optimization
• Data stack & tracking construction
• Media budget management
• Marketing/creative/tech coordination
• Content creation & briefs (UGC, videos, articles)
• Automation (Make, Airtable)


🧪 Recent Results

• +150% qualified leads (education marketplace)
• –30% CAC in 6 months (B2B scale-up)
• +20%/month e-commerce revenue via funnel optimization


🧱 Method
1. Acquisition & funnel audit
2. 30–90 day Growth roadmap
3. Activation, testing & scaling
4. Dashboards + automation
5. Handover & team autonomy


🤝 They trusted me

Tinder, Amazon, Accor, Google, AXA, Franklin, Chance, Les Sherpas, Konbini, HSBC…


👉 Freelance Head of Growth, I help companies accelerate their acquisition and establish sustainable growth through a data-driven, pragmatic, and performance-oriented approach.
Available for full-time or part-time missions (Fractional Head of Growth).
  • English

    Fluent

  • Spanish

    Fluent

  • French

    Native or bilingual

Can work on-site
Paris (up to 50km), Paris (up to 15km)

Experience

  • Franklin Petfood
    Head of e-commerce
    E-COMMERCE
    October 2024 - August 2025 (10 months)
    Paris, France
    Franklin is a French brand of dog and cat food. Our products are 100% natural, grain-free, and made with fresh meat.

    As Head of Digital Marketing at Franklin Pet Food, I led the digital strategy to boost e-commerce growth and enhance customer engagement.

    Key skills and responsibilities:
    • Digital strategy & e-commerce marketing
    • Customer acquisition: SEA, Social Ads, Emailing, Retargeting, Affiliation
    • UX/UI and customer journey optimization
    • CRM & customer loyalty
    • Performance analysis & KPI reporting
    • Team management and coordination with external partners

    Results:
    • +15%average monthly e-commerce revenue
    • Increased qualified traffic and improved conversion rates
    • Deployment of high-performing marketing campaigns generating high ROI
    Acquisition Strategy Facebook Ads TikTok Ads SEA E-commerce Strategy
  • Les Sherpas
    Head of Growth
    EDUCATION AND E-LEARNING
    June 2023 - May 2024 (11 months)
    Paris, France
    Les Sherpas is a French ed-tech startup previously incubated at Station F, Founders Program. We offer an online individual tutoring solution connecting tutors and students, as well as a media platform (+1M visitors/month) to help students choose and succeed in their studies.

    As Head of Growth at Les Sherpas, I led the digital strategy to boost the marketplace growth and qualified lead acquisition.

    Key skills and responsibilities:
    • Digital strategy & e-commerce marketing
    • Customer acquisition: SEA, Social Ads, Emailing, Retargeting, Affiliation
    • UX/UI and customer journey optimization
    • CRM & customer loyalty
    • Performance analysis & KPI reporting
    • Team management and coordination with external partners

    Results:
    • +15% additional leads on average per month
    • Increased qualified traffic and improved conversion rates
    • Deployment of high-performing marketing campaigns generating high ROI
    Growth Marketing Sales Funnel Content Creation Acquisition Strategy Paid Media
  • Chance
    Growth Marketer
    EDUCATION AND E-LEARNING
    November 2021 - June 2023 (1 year and 7 months)
    Paris, France
    Chance Get Yours is a company specializing in professional training and support, offering skills assessments, career coaching, and professional transition programs.
    It helps individuals develop their skills and succeed in their professional integration or evolution.

    My responsibilities:
    - Improve the strategy of paid acquisition channels (testing new channels, implementing retargeting dynamics...), enabling both engagement of existing leads and generation of new ones, while maintaining CAC control;
    - Define the SEO strategy and website internal linking to improve its performance, then lead its implementation;
    - Structure engagement and remarketing campaigns to create multi-channel dynamics, based on a strong content strategy (webinars, blog articles, testimonials, etc.);
    - In collaboration with the Communication team, write and evolve website copy, landing pages, nurturing emails, ads, etc.;
    - Participate in the evolution of marketing personas & ICPs (Ideal Customer Profile) to improve sales pitch, product presentation, and develop audience strategies;
    - Contribute to the structuring and improvement of the Marketing Automation stack (Customer.io, Segment/GTM, dashboards on Metabase, etc.);
    - Analyze funnel data to identify areas for improvement and enhance the sales projection model.
    Acquisition Strategy Sales Funnel Facebook Ads Content Creation Paid Media

Reviews

5.0

Out of 8 ratings

A

Andrea

Franklin Pet Food

Reviewed on 9/2/2024

Thank you again for the quality work over time, based on regular follow-up and always very relevant data analysis :)
B

Benoît

Jedha

Reviewed on 8/26/2024

Julien assisted me in upskilling on Meta Ads and launching new campaigns, particularly for retargeting. His informed advice and support allowed me to quickly get a handle on the tool and create effective campaigns in just a few weeks. Thank you very much :)

Julien has chosen to hide 1 review

1 written review is private.

Recommendations

Johanne BidetJB
FU
Julie De La Porte Des VauxJD
+2
Johanne Bidet and 4 other people have recommended Julien

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Education

  • M1 Marketing
    ISTEC
    2009
  • Master II of Arts and Fashion Business specializing in marketing, management, and merchandising
    ESMOD
    2010

Skill set

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