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Sylvain J.SJ

Sylvain J.

Lead .NET DEV / Architect

€800/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sylvain

My multiple experiences as a startup founder, CTO, developer, agile coach, product owner, and senior developer allow me to support my clients in getting the best out of their teams and fostering innovation by leveraging the virtues of collective intelligence. I am versatile and can intervene across a wide spectrum, from the end-user to the developer, including various stakeholders and/or sponsors.

I have been involved in the innovation ecosystem, particularly startups, for 10 years now. I am familiar with the world of large CAC 40 groups, having started my professional life in some of them (Société Générale Investment Banking, Danone, Crédit du Nord, Natixis) and having supported startups in their business development with them.

Passionate about technology, I am operational and capable of supporting developers on the Backend/Frontend. I have an appetite for functional languages (F#, Rust, etc.). My insatiable curiosity is an asset that allows you to consider differentiating technical and human solutions.
  • French

    Native or bilingual

Can work on-site
Paris (up to 50km), Laval (up to 10km), Caen (up to 10km)

Experience

  • WINmed
    Interim CTO
    MEDICAL
    April 2021 - Today (5 years and 2 months)
    Pays de la Loire, France
    I have been supporting the startup WINmed for two years as a part-time CTO. WINMED develops a solution for future doctors to prepare for the mandatory exam to transition from extern to intern. This solution allows for the creation of consultation scenarios, and students practice in an interactive 3D solution. I coordinate evolution requests and their implementation by various service providers. I support the founders in creating the product roadmap and also make technical choices, as well as part of the application maintenance.
    Roadmap Docker Agile Method PHP/MySQL C#
  • Enerfox
    Coach
    ENERGY AND UTILITIES
    January 2023 - March 2023 (2 months)
    53000 Laval, France
    Supporting the sales director in implementing a commercial strategy and in their role as a manager towards their team.
    Individual Coaching Commercial Strategy Startup Lean Startup Team Management
  • Enerfox
    IT Team Coaching
    ENERGY AND UTILITIES
    July 2021 - March 2023 (1 year and 8 months)
    53000 Laval, France
    I have been supporting the startup Enerfox in structuring its IT team since July 2021. After an audit of the existing situation (methods, infrastructures, and software architectures), we established and implemented the necessary actions to evolve both the infrastructure and the team's organization, and initiated the necessary software overhauls. The support also focused on the use of AGILE/LEAN methods, particularly for specifying user needs (concept of MVP, user stories, features, etc.).
    Lean Startup Agile Method Team Coaching IS Architecture Web Architecture Typescript InfluxDB Docker

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Education

  • Computer Engineering
    ESIEA
    2003
    Ecole d'ingénieur d'informatique, électronique et automatisme

Skill set (51)

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