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Antoine JulienAJ

Antoine Julien

Node.JS PHP | SaaS & WordPress Backend Developer

€350/day
91 projects
Caen, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Antoine

My name is Antoine JULIEN, a self-taught web developer with over 12 years of experience.

Passionate about IT and new technologies since my early age, I started by creating websites under WordPress before gradually expanding my skills towards custom development and more complex architectures.

Today, I specialize in backend development and advanced technical integrations. I work on WordPress projects (plugin development, advanced customization, optimization) as well as more specific Node.js (SailsJS) and TypeScript applications, with strong expertise in connecting third-party APIs (PipeDrive, Stripe, cloud services, etc.), workflow automation, and data management. Notably, I worked for 5 years on Palantex, a financial SaaS with a decoupled architecture (SailsJS / MongoDB / AWS Serverless / Nuxt), and designed Tolv, a multi-tenant B2B SaaS platform for accredited training centers: JWT authentication + 2FA from scratch, full CI/CD pipeline.

I also master modern frontend development with Vue.js and Nuxt, as well as the fundamentals (HTML5, CSS3, JavaScript), which allows me to design high-performance, dynamic interfaces perfectly connected to backend logic.

I support my clients from A to Z, from technical design to production deployment, with a particular focus on the robustness, scalability, and maintainability of the implemented solutions.

Accustomed to working on complete projects (user onboarding, automation systems, dashboards, CRM integrations), I favor a pragmatic and results-oriented approach.

My goal: to offer reliable, scalable, and easy-to-use solutions for my clients.
  • French

    Native or bilingual

  • English

    Conversational

  • Spanish

    Basic

Remote only
Primarily works remotely

Experience

  • 12N Labs
    Full-Stack Developer - Tolv
    SOFTWARE PUBLISHING
    January 2025 - Today (1 year and 7 months)
    Caen, France
    Solo design and development of a B2B SaaS platform for managing accredited training centers (regulated market, multi-tenant model).

    Decoupled architecture in 3 distinct applications:
    • Tolv-Api - Sails.js / Node.js / TypeScript backend, REST APIs + multi-tenant MongoDB via dynamic collections, JWT authentication + httpOnly refresh token + TOTP 2FA from scratch
    • Tolv-App - Nuxt 4 / Vue 3 / TypeScript / custom Tailwind CSS frontend, design system from scratch, zero third-party UI library
    • Tolv-Admin - Internal administration and moderation interface

    Full CI/CD pipeline: GitHub Actions → Docker Hub → Cloudron
    Full-stack Development Node.js MongoDB Typescript REST API
  • Doji Finance Limited
    Fullstack PHP, SailsJS & NuxtJS Developer - Stradoji & Palantex
    PRIVATE EQUITY
    March 2021 - April 2026 (5 years and 1 month)
    Caen, France
    Development and maintenance on two products in parallel for 5 years:

    • Stradoji - Trading learning platform: WordPress pushed to the extreme (custom plugins, custom Gutenberg, Bootstrap) with integration of a self-authenticated Node.js application via JWT in an iframe. WordPress reduced to a CMS shell, all business logic offloaded
    • Palantex - Financial SaaS with a 3-layer decoupled architecture: Sails.js admin / MongoDB, AWS Serverless API, Nuxt / Vue / TypeScript frontend

    Third-party integrations: PipeDrive, Stripe, Amazon SES, automated onboarding systems, and complex business workflows
    Wordpress Backend Development JavaScript, HTML5, CSS3, PHP, MySQL Nuxt.js Node.js
  • Mayasquad
    Malt logoOn Malt
    Web Developer and Integrator.
    November 2020 - January 2021 (3 months)
    Le Havre, France
    Creation of a website based on a theme chosen by the client using WordPress infrastructure.
    Significant freedom in setting up the design and overall structure of the website.
    Some jQuery additions to meet the client's specific needs, fully responsive.

    Entity: https://www.kso-levallois.fr/
    Web Development JQuery Wordpress Plugin Web Integration JavaScript HTML5 CSS Wordpress

Reviews

5.0

Out of 88 ratings

M

Martin

Mayasquad

Reviewed on 3/8/2022

Antoine est exceptionnel, extrêmement à l'écoute et flexible. Merci Antoine
E

Emmanuelle

Talkspirit

Reviewed on 1/19/2022

Antoine a réussi à régler très rapidement les problèmes de mise en page que nous rencontrions sur notre blog. Nous sommes très satisfaits de son travail !

Recommendations

Thomas ThibaultTT
FU
FU
Thomas Thibault and 2 other people have recommended Antoine

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