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Sébastien VansonSV

Sébastien Vanson

Senior React Next.js Developer | Clean Architect

€650/day
Aix-en-Provence, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sébastien

🧑‍💻 Full Stack Development Engineer for almost 10 years.
🎤 Speaker @Devoxx 2024.

🧬 My DNA:

🔹 Clean Code & Clean Architecture lover
🔹 Advocate of unit tests, integration tests, and end-to-end tests
🔹 Pixel perfect advocate 👀
🔹 Mastery of several languages
🔹 Very good adaptability

🧰 My skills:

✅ Front-end development & architecture (React + Next.js, Angular)
✅ Back-end development & architecture (Java Spring, C# .NET)
✅ Relational database architecture (PostgreSQL, SQL Server)
✅ Performance optimization
✅ Good UI/UX skills
✅ Good DevOps knowledge (docker, jenkins, gitlab, ansible, openshift)
✅ Capable of setting up a CI/CD pipeline
✅ Mastery of real-time concepts (Websockets, SSE, polling...)
✅ Mastery of all skills necessary for application creation

💡 My types of missions:

🔸 Development/technical lead in your team
🔸 Solution or application architecture
🔸 Application performance audit & consulting
🔸 Development/deployment speed audit & consulting
🔸 Development quality/delivery audit & consulting

Do you have specific needs? Don't hesitate to contact me to discuss your project 🚀
  • French

    Native or bilingual

  • English

    Fluent

  • German

    Basic

Can work on-site
Aix-en-Provence (up to 50km)

Experience

  • Circlee
    Founder
    SOFTWARE PUBLISHING
    November 2020 - Today (5 years and 7 months)
    Aix-en-Provence, France
    Development of a SaaS platform for online order management for restaurants.
    https://www.circlee.fr

    ➤ Tasks:
    Front-end / back-end / database architecture and development. Functional programming.
    Implementation of front-end and back-end unit and E2E tests.
    UI/UX mockups.
    CI/CD pipeline setup.
    Code review.

    ➤ Stack:
    Project: Up to 3 people, Agile Kanban, JIRA, Confluence
    Front: ReactJS + Next.js, TypeScript
    Mobile: ReactJS + Capacitorjs (hybrid), Java (native)
    Back: Java Spring Webflux, NestJs
    DB: Postgresql, Liquibase
    Devops: Docker, Jenkins, Ansible, Prometheus, Grafana
  • SQUAD
    Technical Leader / Architect
    DIGITAL AND IT
    June 2019 - November 2020 (1 year and 5 months)
    Aix-en-Provence, France
    Digital Factory SQUAD

    Technical leader of a team of 20 people, including 12 developers.
    Cross-functional on about ten projects for the client CMA-CGM.
    Creation of a POC that led to a multi-million euro contract.

    ➤ Industry:
    International player in maritime solutions (CMA-CGM).

    ➤ Tasks:
    Creation of the technical foundation for a team of 20 people + 10 projects.

    ➤ Stack:
    ReactJS + TypeScript, Java Spring, Express.js, PostgresSQL.

    ➤ Team:
    Up to 20 people, Agile Scrum, Agile Kanban, JIRA.
  • SQUAD
    Full Stack Developer
    DIGITAL AND IT
    August 2017 - June 2019 (1 year and 10 months)
    Aix-en-Provence, France
    BPCE-IT (applications for the Banque Populaire Caisse d'épargne group)

    From scratch design of an internal IT infrastructure monitoring SaaS solution, surpassing existing tools.

    ➤ Industry:
    Banking / infrastructure.

    ➤ Tasks
    Front-end & back-end architecture and development.
    Real-time issues (Websockets, SSE, polling).
    CI/CD pipeline setup.

    ➤ Stack:
    Angular, TypeScript, Sass, C# .NET, SQL Server.

    ➤ Team:
    Up to 4 people, Agile Kanban.

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Education

  • Generalist Engineer
    Arts et Métiers ParisTech - National Engineering School of Arts et Métiers
    2014
    Ingénieur généraliste
  • Master 2 Aerodynamics, Aeroacoustics, Fluid Mechanics
    Pierre and Marie Curie University (Paris VI)
    2014
    Master 2 Aérodynamique, Aéroacoustique, Mécanique des fluides

Skill set

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