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Mikael GuillinMG

Mikael Guillin

Senior Software Engineer | React TypeScript

€500/day
New York, US
8-15 years

Average response time: 1 hour

About Mikael

Software engineer with over 12 years of professional experience delivering web solutions across various industries including B2B event management, insurance, and different types of structure such as startups, web agencies and international organizations.
With a focus on web performance and accessibility, I aim to create optimized user interfaces and contribute to the success of web development projects.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • UN Office on Drugs and Crime,
    Senior Software Engineer
    PUBLIC SECTOR
    June 2024 - February 2025 (8 months)
    New York, NY, USA
    • Successfully migrated a drug monitoring platform from Vue 2 to Vue 3 utilizing the Composition API.


    • Transitioned from Webpack to Vite.js, significantly increasing build speed.


    • Implemented TypeScript and setup unit tests with Vitest and Vue Test Utils.


    • Automated TypeScript types generation from backend models, reducing manual work.


    • Optimized and refactored components for maintainability and performance.


    • Refactored authentication by implementing Microsoft Authentication Library (MSAL) as a Vue composable.


    • Contributed to adding Rest API endpoints with FastAPI.
    Vue.js FastAPI MongoDB Python Typescript
  • Inwink
    Senior Software Engineer
    SOFTWARE PUBLISHING
    January 2022 - April 2023 (1 year and 3 months)
    Paris, France
    • Implemented React, TypeScript, Redux, and .NET Core to develop key features such as post feed, forum, sub community, partners workspace for Community, a product used by VivaTech (Europe's biggest tech event).


    • Designed and built an event invitation system, enabling managers to send event invitations and track participation.


    • Reduced Event platform tickets by 80% by resolving legacy bugs, improving customer satisfaction.


    • Used WordPress and Page Builder plugin to boot Inwink's website, allowing the marketing team to edit content in a simple manner.


    • Leveraged Playwright for end-to-end testing to enhance product reliability.
    React.js Typescript ASP.NET Core SQL Server Playwright
  • Infinite Square
    Software Engineer
    DIGITAL AND IT
    September 2019 - December 2021 (2 years and 3 months)
    Paris, France
    • Worked with React, Angular, TypeScript, Redux, NgRx, and Jest to architect and develop business applications for customers including French national companies such as EDF Energy and SNCF.


    • Developed a gamified HR application using React and Material UI aimed to improve employee career development.


    • Built a food supply management platform using Bootstrap and jQuery, helping companies achieve zero waste.


    • Used WordPress, Twig, and ACF plugin to redesign Women's Forum website, wrote user guides and trained the customer to use the back-office.


    • Led knowledge-sharing sessions, conducting presentations on best practices and lessons learned.


    • Worked with Azure DevOps in an agile environment including user stories, daily meetings, retrospective meetings, client demonstrations, code reviews.
    React.js Typescript ASP.NET Core

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Education

  • Master's degree
    CUNY Baruch College
    Master's degree
  • Bachelor's degree
    Cifacom
    2012
    Bachelor's degree

Certifications

Skill set

Categories