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You J.YJ

You J.

Senior Full-Stack Vue | Node | React | AWS

€600/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About You

Senior full-stack developer with nearly9 yearsof experience, I design and develop high-performance and scalablewebandmobileapplications. Specializing inNode.js**, **Vue.js**, **React-Native**, Nuxt, SQL, GraphQL, and **AWS**, I have led **complexprojects in Gaming, APM, e-commerce, and micro-SaaS.

I can assist you with:

DevelopingrobustandoptimizedAPIs (Node.js, Express, Koa, microservices)
Creating modern and responsive web interfaces (Vue3/Nuxt, Svelte)

Designing and maintaining relational and NoSQL databases (PostgreSQL, MySQL, MongoDB, Redis, Supabase)

Implementing real-time features (Socket.io) and automation (Puppeteer, Zapier, Make)

Ensuring versioning, CI/CD, and cloud deployment (Git, GitHub/GitLab, AWS, Docker)

I handle complete projects, from prototype to production, with a particular focus on performance, maintainability, and user experience.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 10km)

Experience

  • Wonderbox
    Full-stack JS developer
    E-COMMERCE
    January 2024 - Today (2 years and 5 months)
    Paris, France
    • Lead the complete internalization of the Wonder-ecard platform.
    • Daily audit and security of the platform to prevent fraud and vulnerabilities.
    • Redesign of B2B sites front & back: Express / Nuxt, +80% performance.
    • Management of the React Native application: releases, builds, and mobile optimization.
    • Collaborate with the infrastructure team for CI/CD, scalability, and security.
    • Contribute to improving the Trustpilot score through optimized UX.
    Technical environment
    • Back: Node - Express - Shopify API - Forest - AWS S3
    • Front: Nuxt3 - Vue3 - Typescript - Vite - scss
    • Other: Jest - Bitbucket - AWX - Jenkins.
    • DB: MongoDB - GraphQL - Postgres.
    • Mobile: React-native
    JavaScript Typescript Node.js React Native GraphQL
  • ACCOR
    Full-stack JS developer
    HOSPITALITY
    November 2021 - December 2023 (2 years and 1 month)
    Paris, France
    • Integration of the NLP search engine.
    • Redesign and optimization of Node.js APIs on AWS.
    • Decomposition of the SF stack into multi-repos.
    • Analysis and optimization of Vue3 / TypeScript components.
    • Accessibility (a11y) improvements for an inclusive user experience
    • CI/CD management and Docker / AWS deployments for reliable releases.
    Technical environment
    • Back: Node.js - Express - AWS: S3, Terraform
    • Front: Vue3 - Typescript - Vite - Webpack - Storybook - Scss
    • Other: Jest - Gitlab - a11y - Docker
    Node.js Vue.js JavaScript Typescript Docker
  • IP-Label Africa
    Full-stack JS developer
    SOFTWARE PUBLISHING
    February 2020 - November 2021 (1 year and 9 months)
    Paris, France
    • Technical studies and strategies for various microservices.
    • API development: reporting, alerting...
    • Integration of notification services: Push, Email, SMS.
    • User Interface development.
    • Training and mentoring of junior developers.
    Technical environment
    • Back: Node - Swagger - Express - Kafka - socket.io.
    • DB: MongoDB - PostgreSQL - Knex.js.
    • Front: Vue2/3 - Vuetify - HighChart.
    Node.js Vue.js Apache Kafka Socket.io MongoDB

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Education

  • Master in Computer Science – Engineering Degree
    Suptech
    2016

Skill set

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