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Julien RoussetJR

Julien Rousset

FullStack JavaScript Developer, AI, WebApp, Mobile

€350/day
Bordeaux, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

Senior JavaScript developer with 14 years of experience, I work on web, mobile, and back-end applications with strong business constraints. I support the design, architecture, and delivery of end-to-end products, with a strong focus on practical application and production readiness.

I primarily work with Angular, Vue.js, Node.js, and Ionic, on SQL and NoSQL stacks like TiDB, MySQL, and MongoDB. I also have solid experience in automation, scripting, and bot development, particularly for scraping, trading, and business processes.

Beyond development, I enjoy structuring technical foundations, upskilling teams, framing architectural choices, and ensuring execution quality. My goal is simple: deliver useful, maintainable, and performant products.

I am particularly comfortable in SaaS, CRM, back-office, and business tool environments, as well as projects requiring speed of execution, autonomy, and product vision.

Open to Senior Developer, Lead Developer, and Tech Lead opportunities.
  • French

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • PickTrade
    Founder & Full-Stack Developer
    January 2025 - January 2026 (1 year)
    Bordeaux, France
    Design and development of an advanced trading platform, GMGN / Axiom type (crypto, on-chain analytics, fast execution).
    ▸ Full-stack architecture: Angular (front), Node.js (API), Rust (high-performance engine)
    ▸ TiDB database for high-volume real-time data & MongoDB for chat
    ▸ Integration of on-chain market data, order book, and trading signals
    ▸ Order execution engine in Rust for maximum performance
    ▸ Trading terminal-like interface with real-time charts and analytics
    MySQL Websocket NodeJS Cloudflare Workers TiDB
  • Freelance
    Independent Web Developer
    July 2017 - April 2026 (8 years and 9 months)
    Assignments as a senior JS developer & technical lead on various web, mobile, and back-end projects.
    ▸ Design and development of SaaS applications, CRMs, back-offices, and business tools
    ▸ Full-stack development: Angular, Vue.js, Node.js, Ionic
    ▸ SQL/NoSQL architectures: TiDB, MySQL, MongoDB
    ▸ Automation, scripting, and bots (scraping, trading, business processes)
    ▸ Technical framing, product maintenance, and evolution
    MySQL Angular 21 JavaScript Ionic Framework VueJS
  • Smartlife Coaching
    CTO
    June 2022 - January 2025 (2 years and 7 months)
    Rennes, France
    Technical leadership of the mobile application, back-end, and product evolutions.
    ▸ Definition of architecture and technical choices
    ▸ Development and maintenance of web and mobile features
    ▸ Technical supervision and skills development of apprentices
    ▸ Coordination between business needs, product, and delivery
    ▸ Continuous improvement of quality, performance, and maintainability
    NodeJS MySQL OVH Cloud Capacitor Angular 16

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Education

  • Application Designer Developer Bachelor's degree level
    Concepteur Développeur d'Applications Niveau Bac
  • Self-taught approach
    Approche autodidacte

Skill set

Categories