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Sebastien DuvivierSD

Sebastien Duvivier

Front-end web developer

€250/day
Lille, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sebastien

Passionate Front-End Developer, I design modern, high-performance web interfaces faithful to mockups, using a solid stack: HTML5, CSS3 (Flexbox/Grid), JavaScript (ES6+), React, and Git/GitHub.

I pay particular attention to:
- performance (clean, structured code, best practices)
- responsive design (mobile-first)
- user experience (smooth navigation, clear interactions)
- pixel-perfect fidelity to mockups (Figma, Adobe XD)

Personal project:
In parallel with my assignments, I am developing SwipeMyTalent, a mutual aid platform for IT freelancers. This project allows me to practice UI design, front-end integration, database management, and product monitoring in real conditions.

Stack & tools:
HTML5, CSS3, Sass, JavaScript ES6+, React, React Router, Git/GitHub, Figma, Node.js (basics), REST API, Docker

Soft skills:
Autonomous, curious, serious and reliable, I integrate easily into a team or work solo as needed.

Available for remote or hybrid work, for one-off or long-term assignments.
Let's talk about your project or your front-end support needs!
  • French

    Native or bilingual

  • English

    Basic

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

Experience

  • SwipeMyTalent
    Founder & CEO
    May 2025 - Today (1 year and 1 month)
    I designed and developed SwipeMyTalent, a web platform for mutual aid among IT freelancers.
    My responsibilities:
    User Interface (UI/UX) design and front-end development (React, Tailwind CSS)
    Setting up the technical architecture, project management, and product monitoring
    Integrating a REST API, managing the database, and deployment
    Community management, gathering user needs, and continuous improvement
    This project allows me to strengthen my technical and management skills while addressing a real market need.
    React.js Responsive Web Design Javascript ES6 SASS/SCSS redux
  • SDuvivierTech
    Front-end web developer
    March 2025 - Today (1 year and 3 months)
    Méteren, France
    Creation of Responsive Websites Front-End Development Integration of mockups Optimization of Web Performance
  • OpenClassrooms
    Web Integrator
    June 2024 - March 2025 (9 months)
    Méteren, France
    Mastery of front-end development with HTML, CSS, JavaScript, React, and Redux. Skills in performance optimization, accessibility, SEO, and use of Git/GitHub. Concrete projects applying web best practices and agile methodologies.

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Education

  • Web integrator
    OpenClassrooms
    2025
    Développeur informatique
  • BEP hotel and catering
    Lycee marguerite Yourcenar
    BEP hôtellerie restauration

Certifications

  • IT developer
    openclassroom
    2025
    redux Git Agile method Docker W3C HTML5 JavaScript SASS React.js CSS3

Skill set

Categories