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Alexis G.AG

Alexis G.

Product Engineer | MVP & Application Creation

€470/day
2 projects
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Alexis

Product-oriented web developer with 4 years of experience, I help founders and project leaders to quickly transform an idea into a functional MVP ready to be tested by real users, and ready to scale!

My goal: to transform an idea or a mockup into a functional prototype, ready to be tested by users or presented to investors.

I work on the entire product creation cycle:

• Design of modern, responsive, and polished web interfaces
• Development of high-performance web applications
• API creation and backend architecture
• Database setup
• Project structuring and security
• Deployment and launch

I am used to working on projects built from scratch, with a pragmatic approach: move fast, make the right technical choices, and deliver a usable product quickly.

As a developer of my own SaaS products, I am very familiar with the steps project leaders go through: idea validation, MVP construction, rapid iterations, and time or budget constraints. This experience allows me to provide a critical perspective on technical choices, propose solutions adapted to the project, and clearly explain the reasons behind these decisions when you need advice.

I particularly appreciate entrepreneurial contexts, MVPs, prototypes, and ambitious side projects. Collaborating with motivated founders and helping them realize their vision is what motivates me the most.

If you have a product idea, an MVP to build, or a web application to launch quickly to test a market, I would be delighted to discuss it.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Zyscompany
    iDuerp - Zyscompany
    SOFTWARE PUBLISHING
    February 2026 - Today (4 months)
    Poissy, France
    Development of aweb management application (console)for theiDUERPplatform, initially available only as a mobile application.

    The objective of this mission was to createa complete web interface replicating the functionalities of the mobile application, to allow for more comfortable and centralized management from a browser.

    Key contributions:

    Design and development of the web consoleenabling access to the platform's main functionalities from a computer.
    Creation of the backend architecturebased on Firebase and Cloud Functions, used as APIs to manage business logic and database interactions.
    • **Complete design of the interface**, focusing on ergonomics and clarity of screens to facilitate use by administrators.
    • **Development of a responsive web interface**, allowing smooth use on different screen formats (desktop, tablet).
    • **Creation of a customer onboarding flow**, designed to guide new users and facilitate the adoption of the application from the first use.
    Integration and synchronization of existing mobile application functionalitiesto ensure functional consistency between the two platforms.
    • **Sustainable architecture**.

    This mission extended the product ecosystem with amodern, user-friendly, and easily accessible web console, while improving the user experience through clear and structured onboarding.
    Web Project Management Firebase React.js Web Architecture CMS
  • Zyscompany
    viBBes - Zysco
    SOFTWARE PUBLISHING
    December 2025 - Today (6 months)
    Poissy, France
    Following asecurity issue encountered on the AWS infrastructure**, the client wished to migrate the entire project to a new architecture that was simpler to manage and more secure. This transition was also an opportunity to **completely modernize the product's technical foundation, by adopting more recent technologies and a more robust architecture.

    Technical refactoring and modernization mission for theviBBesplatform.

    The objective of this mission was to simplify the infrastructure, improve code maintainability, and prepare the product to evolve more easily.

    Key contributions:

    • Validation of videos, using Gemini AI, based on specific criteria: video quality, on-screen appearances, sound quality, etc...
    Migration of the infrastructure from AWS to Firebaseto simplify the management of the backend and cloud services.
    Complete refactoring of the web console (CMS)to improve code structure, performance, and administration experience.
    • **Complete redesign of the backend API**, initially developed with Express.js, towards a more robust and modular architecture based on NestJS.
    Adaptation of the iOS mobile applicationto work with the new API, with updates to endpoints and necessary client-side adjustments.
    • Fixing minor bugs and overall application stabilization.

    This mission allowed for the modernization of the project's technical architecture, making the backend more structured and scalable, while ensuring compatibility with the existing mobile application.
    Firebase CMS iOS NestJs Artificial Intelligence
  • Alexis Guerquin
    POMOCHA - Productivity Application
    SOFTWARE PUBLISHING
    April 2025 - Today (1 year and 2 months)
    Vernouillet, France
    Development and complete design of the **Pomocha productivity SaaS**, an application designed to help users stay motivated on their personal projects through **statistics, gamification mechanics, and time tracking**.

    My role covered all technical and product aspects of the project:

    • **Design of the visual identity and graphic charter**, including gamified design of icons and interfaces to make the experience engaging.
    • **Brainstorming on features and user needs**, design of the overall experience and long-term product evolution.
    • **Development of the web SaaS and associated Chrome extension**, implementing core features: project creation, to-do lists, weekly and monthly reports, progress tracking, user interactions (mini social network).
    Integration of payments with Stripefor subscription management.
    • **Creation of the showcase website / landing page**, social media communication, and SEO for product launch.
    Preparation of the mobile architecturefor future development on iOS and Android.

    This mission allowed me to combineproduct design, development, full-stack development, and SaaS strategy, while ensuring the creation of a coherent, scalable, and engaging product for users.
    SAAS SEO Chrome Extension Mobile Application Product Launch

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Education

  • Expert in Information Technology
    Epitech
    Diplomé d'Epitech

Skill set

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