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Julien S.JS

Julien S.

Senior Full-Stack Developer | Tech Lead

€500/day
Toulouse, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

With 10 years of experience in web development, I create scalable and high-performance solutions with a pragmatic and collaborative approach. Whether as a technical leader or supporting an existing team, I always provide quality guidance to ensure project success.

🔹 Remote preferred: I am immediately available for remote assignments.
🔹 Geographic flexibility: Occasional travel possible.
🔹 Collaboration and expertise: I provide tailor-made solutions, with fluid communication and effective support at every stage of the project.

If you have a project to launch or need a freelancer to support your team, don't hesitate to contact me. I'd be delighted to discuss it with you!
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Toulouse (up to 50km)

Experience

  • Self-employed
    SENIOR SOFTWARE ENGINEER
    September 2023 - Today (2 years and 9 months)
    Architect and develop a global SaaS digital service platform:

    • Define product vision, concept, and promotional strategies.
    • Architect software using a vertical slice approach with API gateway and micro-services.
    • Select and implement a robust, modern stack.
    • Oversee product design with Bento Card, ensuring adaptive, mobile-friendly web design.
    • Define and implement core features, including appointment scheduling, workflow management, secure authentication, and multilingual support.
    • Drive UI/UX strategy, including visual design, interactive behaviors, and content strategy, to optimize user engagement.
    • Develop the solution focusing on high-quality delivery.
    Django Python Next.js React.js GraphQL Urql Typescript Plop Codegen TailwindCSS docker-compose Docker Celery Redis PostgreSQL Notions GitHub Software Architecture UI/UX Design DRF
  • CoperBee
    TECH LEAD
    October 2019 - October 2021 (2 years)
    Toulouse, France
    Created an eCommerce Website and Ecosystem Using JAMstack:

    • Researched and evaluated technologies for a scalable eCommerce platform.
    • Defined technical architecture and led the team in the end-to-end development.
    • Delivered a complete solution with a focus on performance and scalability.

    Optimized an Application for Managing and Consulting Drone Missions via CLS:

    • Collected and analyzed client requirements to shape the project.
    • Designed and implemented a technical solution to improve application performance.

    Developed Widget Component Page for Oceanographic Forecasting Data (Copernicus):

    • Led client consultations to define goals and visualization needs.
    • Built interactive data visualizations and optimized architecture for efficient delivery.

    Created Micro-services for Language Analysis as Part of Internal R&D:

    • Defined functional requirements and implemented micro-services to enhance language processing.
    Django GatsbyJS React.js Saleor Strapi Celery Redis GraphQL Docker docker-compose PostgreSQL Git Gitflow Flux Redux.js IndexedDB OAuth2 REST API DRF
  • Ravacan
    BACKEND ENGINEER
    February 2022 - July 2023 (1 year and 5 months)
    Developed a SaaS marketplace:

    • Designed and implemented scalable features to enhance marketplace functionality.
    • Led backend architecture and integration.

    Developed a B2B real-time collaboration SaaS platform:

    • Developed real-time collaboration tools with advanced permissions and group management.
    • Conducted unit testing to ensure stability and reliability.

    Improved the SaaS purchasing and supply solution:

    • Built and optimized a purchasing and supply chain solution.
    • Integrated secure authentication and multi-user access controls.
    Auth0 Django Python Celery Redis API REST GraphQL Graphene Docker Microsoft Visual Studio Git Monday Notion Figma DRF PostgreSQL

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Education

  • MASTER
    2014
    MASTER
  • Bachelor of Science
    University of Orléans [FR]
    2009
    BACHELOR

Skill set

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