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Gaoussou KonéGK

Gaoussou Koné

Senior Full Stack Developer +8 years React|Vue,Typescript

€622/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Gaoussou

◉ A little about me ⤵︎

👨‍💻 I am an expert in keyword Front-end Development React, Vue, Next.

🧑‍💼 +6 years of experience as a developer.


◉ My references ⤵︎

Warner Bro's, Konbini, Dailymotion, Kering, France-tv, Alexander McQueen, Yves-saint-lorent

Here are the missions I regularly undertake:
  • Front-end development React.js / Nextjs / Vue.js
  • Front-end development with React for reactive and dynamic interfaces.
  • Creation of innovative websites, using Next for optimal performance.
  • Implementation of interactive components thanks to Vue and its reactivity capabilities.
  • Typescript for robust and maintainable front-end code.
  • Complex state management with Redux, improving user experience.
  • Use of Adonis for an efficient and secure backend, supporting the front-end.
  • Continuous integration and simplified deployment thanks to Docker.
  • High-performance front-end development, optimized with React and Vue frameworks.
  • Creation of responsive and dynamic websites, using the latest web technologies.
  • Expertise in React for interactive and intuitive web applications.
  • Integration of faithful mockups for a professional and aesthetic final rendering.
  • Use of GraphQL for efficient and flexible data queries.
  • Development of SaaS solutions, meeting end-user needs.
  • Creation and management of APIs, facilitating data exchange between services.
  • Implementation of web services, ensuring system interoperability.
  • Use of WebSockets for smooth real-time communication.
  • API integration, ensuring optimal connectivity between different platforms.

Available 7 days a week via malt messaging.

I respond in less than an hour.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Warner Bros
    Fullstack JS Developer
    SPORTS
    March 2022 - November 2025 (3 years and 8 months)
    Paris, France
    The mission consisted of rebuilding a CMS initially built in C# into a React-based CMS. This experience allowed me to work on the backend with ExpressJS and Apollo GraphQL, and Amazon AWS. We were a team of 15 people, mainly developers, UX designers, front-end developers, and DevOps. My task was to maintain existing functionalities, develop new ones, conduct numerous studies, and test all added functionalities. Technologies used: Frontend NextJS, TypeScript, Angular, Vue, Apollo GraphQL. Backend in TypeScript (Node), Express, with a public GraphQL API and AWS services (lambda, S3, open Search, ...). Continuous integration with Github Actions.
    AWS Cursor Apollo GraphQL React.js Next.js
  • Citeo
    Full-Stack Developer
    February 2021 - July 2022 (1 year and 5 months)
    Paris, France
    Build a custom CMS. In the project, the client needed a front-end developer to increase feature delivery. Collaborating with backend developers and designers was essential to achieve the expected outcome. Technologies used: ReactJs, TypeScript, Material Ui, Symfony (API Platform), Jest, Azure DevOps Services.
    React.js Next.js PostgreSQL SASS/SCSS Symfony
  • Sonepar
    Full-Stack Developer
    August 2021 - January 2022 (5 months)
    Paris, France
    Build a frontend web micro-store. My task was to implement solutions in the frontend and GraphQL part of the application. Collaborating with the business analyst/product owner, technical architect, and clients using best engineering practices like test-driven development. Emphasis on quality. Technologies used: NextJs, TypeScript, React, React-Native, GraphQL, Apollo, Jest, Azure DevOps Services. Application refactoring and test coverage (jest, react-testing-library). I had to refactor class components into functional components (hooks, custom hooks, redux, redux-saga). Changed folder structure for better readability for newcomers (simplify component imports with aliases). Write directives/documentation for the team. I was also responsible for mentoring a developer. Technologies used: NodeJs, TypeScript, Angular, Redux, MaterialUi, Jest, Reselect.
    Next.js React.js Apollo GraphQL Jest/Enzyme Microsoft Azure

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Education

  • Bachelor's Degree
    2018
    Bachelor's Degree
  • Bachelor
    2014
    Bachelor

Skill set

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