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Julien Le RouxJL

Julien Le Roux

Head of Growth - User Acquisition - AI Automation

€850/day
29 projects
Fontainebleau, FR
8-15 years

Average response time: 1 hour

About Julien

French entrepreneur passionate about consumer apps, growth, AI automation, and product strategy.

I help startups and digital businesses acquire more users, improve their funnels, and build smarter growth systems using AI, automation, and data.

My focus is on user acquisition, product management, retention, monetization, and AI-powered workflows. I enjoy working on practical growth problems: launching campaigns, testing creatives, improving onboarding, automating repetitive tasks, and finding new ways to scale faster.

I have hands-on experience with paid acquisition, ASO, analytics, funnel optimization, generative AI tools, Python/API automations, and product experimentation.

I’m especially interested in projects around consumer apps, subscription products, AI tools, mobile growth, and creative automation.
  • English

    Fluent

  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Happn
    Head of Growth
    SOCIAL NETWORKS
    February 2022 - February 2026 (4 years)
    Paris, France
    • Lead user acquisition (team of 5 people) on social media and networks (APAC, EMEA, LATAM) (TikTok, Google Ads, Meta, Snapchat, Reddit, Twitter, AppLovin, Unity)


    • Responsible for ASO strategy, utilizing data analysis to develop cultural insights and target market strategies (15+ countries). (Product page optimization, CPPs, In-app events)

    • Design and lead fast experimentation process of new geographies, channels, campaigns, creative and drive to app activations to build scalable organic/paid strategies

    • Optimisation of Apple Search ads: Acquisition, Retargeting and Remarketing strategies + CPPs action plan

    • Ensure the optimal channel mix tailored to each audience segmentation, aligned with our performance KPIs (based on CAC, LTV, ROA, along with activity & retention metrics)

    • Plan and manage online brand awareness campaigns and optimize premium placements (TikTok Top view, YouTube Masthead, Snap Lenses, Twitch, Pluto.tv) against our Brand KPIs: Reach, Frequency, Video completion, engagement (10M+€ budget)

    • Manage, measure and report performance of all TV campaigns (Sponsoring/DRTV strategies). Tools: Realytics, Yougov

    • Actively work on creative optimization (Story Arc / Frameworks / Hooks) in an ever-changing ecosystem

    • Build data processes to identify trends & insights from our 20K+ video/static/wording ads to create highly engaging contents

    • Design and execute data visualizations, processes, forecasting, and reporting related to budget allocation and performance metrics, translating data-driven insights into actionable growth opportunities. Tools: Tableau, Spreadsheet + Market data: Data.ai (formerly AppAnnie), Paragone (formerly MakeMeReach)
    SMO Team management ASO Monetization Data analysis
  • Happn
    Senior Growth & Acquisition Specialist
    SOCIAL NETWORKS
    September 2020 - February 2022 (1 year and 5 months)
    Paris, France
    • Tracking/MMPs: Set up tracker all kind of networks, leveraging Adjust data through Datascape and collaborate with the dev team to implement new front-end events

    • Directly involved in iOS ATT framework / SkadNetwork / DMA Consent Mode & Google Privacy Sandbox implementation and optimization processes
    Tracking MMP Adjust Skadnetwork
  • Happn
    Growth & Acquisition Specialist
    SOCIAL NETWORKS
    September 2018 - September 2020 (2 years)
    Paris, France
    • Manage the French, Belgian, Dutch and Italian markets (M€+ in budget)

    • Lead Facebook, Instagram, Snapchat, Google Ads, Tiktok, Apple Search Performance-oriented campaigns (M+ downloads per year)

    • Plan, Manage, Monitor Facebook, Instagram, Youtube, Snapchat ane TV Brand-oriented campaigns

    • Measurement and decision making based on KPIs such as CAC, LTV and ROAS

    • Defining A/B or multivariate testing, monitoring results and applying insights & learnigns.

    • Market analysis on SEO, SEA, SMO

    • Manage and mentor new, junior members and interns of the team.
    User Acquisition Growth marketing SMO A/B Testing SEA

Reviews

4.9

Out of 29 ratings

AD

Account deleted

Reviewed on 3/13/2019

La mission consistait en une création de logo. Je suis satisfait du travail réalisé
HannahH

Hannah

BABBLER

Reviewed on 3/1/2019

La mission était la production d'une vidéo marketing de démo de notre interface produite. Satisfaite du livrable fourni par Julien !

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Education

  • Master Institut Mines-Télécom
    Telecom Ecole de Management
    2014

Skill set

Categories