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Julien C.JC

Julien C.

Frontend Developer (React, Typescript, NodeJS)

€600/day
71 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

Freelance frontend developer passionate with deep expertise inTypeScriptand **React**, I code daily and split my time between freelancing (mainly with tech startups working remotely), open-source, and creating micro-SaaS. I am notably the creator and maintainer of usehooks-ts, a React Hooks library with 3 million monthly downloads.

Frontend Skills
- Basics: HTML, CSS, SCSS, TypeScript
- API: REST, server actions, react-query, SWR
- Framework: React, Next.js (CSR, SSR, RSC), Svelte
- UI: Tailwind/shadcn/Radix, CSS-in-JS, Material Design, CSS-modules
- State: React.context, Redux, jotai, zustand
- Testing: Jest, Vitest, Storybook, Playwright
- Web3: Solidity, web3/ethers, hardhat/Truffle
- Backend: Prisma, tRPC, Nest.js, Express, Firebase, headless CMS

Technical Watch
When I'm not coding, I enjoy perfecting my skills by reading classics like Clean Code, The Pragmatic Programmer, Deep Work, TDD, Lean Startup, and Clean Architecture, watching technical conferences on YouTube, or reading articles on Medium, dev.to, Twitter... This commitment allows me to apply best practices and trends in my projects.

Why collaborate with me?
As an experienced frontend developer, I transform your ideas into high-performing products. My attention to detail and commitment to best practices ensure scalable solutions and polished interfaces; UX is everything. I quickly integrate into teams and adapt to the specific needs of each project, always bringing innovation and technical excellence.

For more references, visit my GitHub @juliencrn or my website juliencaron.com.

See you soon,
Julien
  • French

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • Anthm - Kwest
    Senior Frontend Developer
    VIDEO GAMES AND ANIMATION
    November 2023 - January 2024 (2 months)
    Paris, France
    - Design system redesign
    - E2E tests
    - DX optimization (eslint, turborepo)
    TypeScript Next.js React Storybook SCSS Turborepo
  • Allfeat
    Core Rust Blockchain Developer
    TECH
    May 2022 - Today (4 years)
    Allfeat is creating its own blockchain using the Substrate framework (Polkadot Universe) for the music industry.
    I am involved in developing Rust modules to add business logic to this blockchain.
    Rust Blockchain Substrate Web3
  • Chefclub
    Frontend Developer
    E-COMMERCE
    September 2020 - June 2021 (10 months)
    Frontend development for a web redesign within a team.
    TypeScript React.js gatsby SASS Netlify GraphQL Git

Reviews

4.9

Out of 49 ratings

JcJ

Jc

Allfeat

Reviewed on 2/6/2023

perfect job
JcJ

Jc

MBWY

Reviewed on 10/18/2022

Nothing to report, proactive, attentive to strategic thinking.

Recommendations

Jc BaratJB
FU
Jc Barat and 1 other person have recommended Julien

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Education

  • Full Stack JavaScript Developer
    FreeCodeCamp
    2020
    Perfectionnement Javascript Le développement web nouvelle génération. - les nouvelles version Javascript comme l'ES6 - les librairies Front-end comme React, - Back-end avec Node.js - les notion de structure de données et d'algorithmique de façon plus approfondit.
  • PHP Developer
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    2017
    Perfectionnement PHP (PHP7, Programmation Orienté Objet, MySQL, framework PHP)

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