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Gabriel HofmanGH

Gabriel Hofman

Expert Mobile Developer in React Native

€700/day
1 project
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Gabriel

I've worked on the mobile applications of Luko, The Fork, Sephora, Meetic, and many others. Today, I help startups and scale-ups transform their vision into iOS & Android apps in record time.

Do you have an app idea to launch, an existing application to take to the next level, or need a mobile expert in your teams? Let's talk.

In almost 15 years of development, with 10 dedicated to mobile, I've supported projects at all stages: from startups (Revyze, Cocolis, Upstream) to scale-ups (Luko, Typology) and large groups (Sephora, The Fork, Meetic).

What my clients remember:
→ I'm not just a technical executor. I challenge the product, I propose alternatives, and I structure each release to maximize business impact.
→ I quickly become proficient in your business domain, in days, not months.
→ I master the entire cycle: technical architecture, iOS & Android development (React Native), store deployment, iteration, and performance measurement.

The app market is transforming with AI. Users expect increasingly intelligent and seamless experiences. This is exactly where I can help you.

📩 Write me a DM with a brief summary of your project. I'll give you initial feedback with no obligation.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Paris (up to 50km), Paris (up to 20km)

Experience

  • Upstream
    Expert React Native Mobile Developer
    SOFTWARE PUBLISHING
    July 2025 - December 2025 (5 months)
    Paris, France
    Upstream helps you and your team save valuable time every day by making email smarter and collaborative. Start your day with an organized inbox, drafts ready to be sent, and get you and your team on the same page. For that, we create AI-generated drafts & replies that actually sound like you, share the necessary context with your team, and organize/categorize your incoming messages.

    - Onboard the existing engineering team with mobile development
    - Create the mobile app from scratch to match the existing and extensive web version
    - Integrate a fully featured mail client with lots of extra features (route emails in custom splits, assign them to organization-wide channels, create private conversations on top of external-facing emails, etc…)
    - Setup beta tests with external users and collect feedback to iterate on
    - Prioritize work to get a release date as soon as possible
    - Big focus to optimize the app performance to be as fast as possible
    - Release the first versions of the app on iOS and Android

    Tech stack:
    TypeScript, JavaScript, React Native, Expo, NativeWind, Redux Toolkit, Storybook, REST APIs, Auth0, Sentry, PostHog, Figma
    React Native Expo Typescript Mobile Application Mobile Development
  • UQ Learn
    Expert Mobile Developer
    EDUCATION AND E-LEARNING
    February 2025 - December 2025 (10 months)
    Paris, France
    UQ Learn offers solutions built on mobile-first training technology, featuring personalized in-app microlearning, social learning, and game-based challenges. The goal of the platform is to foster a lifelong learning culture within companies that utilize the product.

    - Create from scratch the first mobile version of the new platform
    - Set up the whole tech stack that matches the product vision to ship fast and with the best quality
    - Integrate learning features like quizzes, video content, podcasts, social wall, and much more
    - Configure private testing of the apps (iOS and Android), before rolling out to production

    Tech stack:
    JavaScript, TypeScript, React Native, Expo, Expo Router, REST APIs, Tanstack Query, Jest, React Testing Library, Figma
    React Native Expo Typescript Mobile Application Mobile Development
  • Sephora
    Senior Mobile Software Engineer
    E-COMMERCE
    April 2024 - Today (2 years and 3 months)
    Paris, France
    Sephora is a global leader in beauty, offering over 250 brands and 16,000 products in its stores and online. Sephora is part of the LVMH group, the world's largest luxury group, and is present in 34 countries across Europe, the Middle East, the Americas, and Asia.

    - Management of internal apps across Europe and the Middle East
    - Development of mobile applications for Sephora staff in stores and warehouses
    - Launch of the MVP of a connected scanner to analyze customers' skin in-store and propose personalized diagnostics and suitable products
    - Refactoring of older applications to upgrade them to a stack similar to other applications
    - Management of all these applications in a monorepo
    - Iteration on a design system integrated into each of these apps, as well as a shared business logic component
    - Implementation of remote configurations to manage country-specific features over-the-air
    - Continuous improvement of our technical stack and development processes

    Technical stack:
    JavaScript, TypeScript, React Native, Expo, React Navigation, Firebase, REST APIs, Redux, Tanstack Query, Dynatrace, Figma
    JavaScript Typescript React Native Mobile Application Mobile Development

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Education

  • Computer Engineering
    Supinfo International University
    2016

Skill set

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