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Guillaume MarcGM

Guillaume Marc

Frontend Developer

€450/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

Web developer for over 5 years, I am passionate about IT.

Motivated, I would be delighted to participate in your project. Today I am focusing more on the development of web applications developed in JS, React JS and Typescript.

  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • frontguys
    Senior Frontend Developer
    DIGITAL AND IT
    February 2024 - June 2024 (4 months)
    Paris, France
    Various internal projects


    ● Upgrade of the project from yarn to pnpm
    ● Upgrade Storybook version 8
    ● Migration from CRA to ViteJS
    ● Migration from jest to vitest
    ● Implementation of pre-commits (jest, eslint, prettier…)
    ● Creation of CI/CD for gitlab (automatic tests, vulnerability checks)
    ● Familiarization with accessibility (A11Y)
    ● Training a developer in React


    a11y SEO Storybook Git Gitlab HTML5 CSS3 React.js Typescript Vite
  • Autodistribution
    Senior Frontend Developer
    AUTOMOBILE
    November 2023 - February 2024 (3 months)
    Paris, France
    Development of a Progressive Web App (PWA) on iPad for an automotive parts sales company
    Team of about ten developers, two QAs, and a PO

    ● Agile work methodology (SCRUM with 2-week sprints)
    ● Review of Merge requests
    ● Technical advice for junior developers on React / Typescript
    ● Creation of a PWA for distributing automotive parts, including an offline mode
    ● Pixel-perfect integration from Figma mockups
    ● Implementation of unit tests (jest)
    ● Creation of a PWA for distributing automotive parts
    ● Creation of new features and bug fixing
    React.js TypeScript Developer TailwindCSS Gitlab CI Gitlab ESLint Atlassian JIRA Figma
  • Mutuelle Nationale Territoriale (MNT)
    Frontend Technical Lead
    HEALTH AND WELLNESS
    March 2020 - November 2023 (3 years and 8 months)
    Paris, France
    Frontend Technical Lead
    Acted as front-end technical lead on three platforms for a mutual insurance company (member area, collective area, employee area)
    Team composed of two developers, two POs, two QAs, one UI/UX designer, and one team lead

    ● Agile work methodology (SCRUM with 2-week sprints)
    ● Technical lead, participation in meetings and decisions on technical feasibility, time estimations
    ● Participation in the creation of new features, e.g., user journey for medical expense reimbursement (UI validation, time estimation, task/sub-task allocation…)
    ● Management of a custom component library common to all areas (npm module, managed with Lerna, tested with Jest)
    ● Code reviews for each task (gitlab)
    ● Pair programming with developers (new joiners)
    ● Pre-commits to ensure code quality (eslint, prettier, and tests)
    ● Use of GraphQL
    ● Implementation of new API routes on the back-for-front in NodeJS
    ● Communication with the backend team (Scala) for task completion
    Development of a shop website (mnt.fr)
    Customizable site via a Headless CMS (Prismic), team of 3 developers, one QA, and one team lead
    ● Agile work methodology (SCRUM with 2-week sprints)
    ● Implementation and configuration of a Headless CMS (Prismic)
    ● Development from scratch of an application communicating with the CMS (React, GraphQL, Typescript)
    ● Implementation of a Storybook library
    ● Implementation of unit tests (Jest)
    ● Evolution to a lead dev position (communication with the client, decision-making and problem-solving, time estimations, task assignment to developers)
    React.js GraphQL Typescript styled-components SASS/SCSS Lerna Git Gitlab Node.js Linux Bash Storybook Jest Figma Atlassian JIRA TypeScript Developer

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