You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Ségolène A.SA

Ségolène A.

Supermalter

Frontend Developer • React | TypeScript

€650/day
12 projects
Paris, FR
8-15 years

Average response time: 12 hours

Freelancer profile translated to English.
Back to original language

About Ségolène

Passionate frontend developer focused on user experience-driven web application development, I bring a dual technical and product expertise gained within startups at various growth stages: from early-stage to unicorn (Mago, Figures, Doctolib).

🪄 What I can bring to your project:
- Frontend technical expertise: React, Next.js, TypeScript, React Query, Design System, testing strategy
- Implementation of technical best practices and efficient development workflows
- Product vision and understanding of business challenges
- Ability to collaborate effectively with design and product teams

🎨 My latest achievements:
- Creation of an MVP on React & Next.js from inception to beta-tester launch, including design system implementation and performance optimization
- Setup of tracking tools (PostHog) and E2E tests (Playwright)
- Close collaboration with the product team to prioritize and implement features pragmatically

🔍 I am looking for challenging missions with startups and scale-ups that want to:
- Build or evolve their product
- Optimize their user interfaces
- Implement development best practices
- Benefit from frontend expertise coupled with a product vision

💌 Feel free to contact me to discuss your projects!
  • French

    Native or bilingual

  • English

    Fluent

  • German

    Fluent

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

Experience

  • RATPDev
    Senior Frontend Developer - React
    TRANSPORTATION
    February 2025 - Today (1 year and 6 months)
    Paris, France
    Experienced front-end developer, I joined a team of backend and data engineers on a strategic real-time supervision project for RATP. As the sole frontend expert in the team, I am responsible for the architecture and code quality of the frontend application.

    🎨 Key achievements:
    - Architecture and development of the application on Vite/React, including the implementation of React Query for optimized data management
    - Selection of a library for all future RATP products and initiation of a Design System
    - Implementation of an E2E test suite with Playwright and continuous integration via Github Actions, ensuring product reliability
    - Establishment of code standards and review of all frontend contributions

    🤝 Product Collaboration:
    - Active participation in agile rituals and definition of the development workflow
    - Close contribution with designers for the choice of the UI library and the construction of the Design System
    - Regular communication with design and product teams to ensure consistent integration
    React.js TanStack Query Frontend Development Material UI Design System
  • Mago
    Senior Frontend Developer - React | Next.js
    VIDEO GAMES AND ANIMATION
    July 2024 - January 2025 (7 months)
    Paris, France
    Early-stage startup developing an AI-powered video styling tool.
    As the first frontend developer, I led the creation of the MVP from scratch to its launch to beta testers.

    🎨 Key achievements:
    - Architecture and development of the application on Next.js/React, including the implementation of React Query for optimized data management
    - Implementation of an E2E test suite with Playwright and continuous integration via Github Actions, ensuring product reliability
    - Optimization of frontend performance and accessibility for a smooth user experience
    - Setup of tracking tools (PostHog) to measure user engagement
    - Establishment of code standards and review of all frontend contributions

    🤝 Product Collaboration:
    - Active participation in agile rituals and definition of the development workflow
    - Support for the product team in technical evaluation of features and their prioritization
    - Regular communication with design and product teams to ensure consistent integration
    React.js Next.js React Query TailwindCSS Frontend Development
  • Figures
    Fullstack Developer - React | Node
    HUMAN RESOURCES
    December 2023 - May 2024 (6 months)
    Paris, France
    Scale-up specializing in compensation solutions, I contributed to the development and evolution of the salary grid module, a key tool enabling companies to structure their compensation policy.

    🎨 Key achievements:
    - Development and maintenance of the salary grid module in React/TypeScript
    - Implementation of fullstack features with Node.js and Prisma
    - Setup of E2E tests with Playwright to ensure feature reliability

    🤝 Leadership & Collaboration:
    - Tech lead on several strategic projects
    - Active participation in user research phases and definition of specifications
    - Co-creation of team agile processes with the rest of the team
    - Close collaboration with the Product Manager from ideation to delivery on certain projects
    React.js Material UI CSS3 JavaScript Frontend Development

Reviews

5.0

Out of 7 ratings

E

Eric

Zee Agency

Reviewed on 3/18/2020

Great training, Ségolène was attentive to adapt to different profiles, very professional. We recommend!
A

Alexis

EPISTO

Reviewed on 2/27/2020

The mission of creating a landing page via Webflow went perfectly with Ségolène. Friendly, responsive, and efficient!

Recommendations

Alvaro Lamarche TolozaAL
Florine L.FL
FU
+2
Alvaro Lamarche Toloza and 4 other people have recommended Ségolène

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Computer Science
    42
  • Web Development - Ruby on Rails
    The Hacking Project
    2018
    - Front-end: HTML, CSS, jQuery, javascript - Back-end: Ruby, Ruby on Rails

Skill set

Categories