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Johann N.JN

Johann N.

Supermalter

Tech lead/Senior Backend/Fullstack C# Developer

€700/day
5 projects
Montpellier, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Johann

🎯 Who I work with

I support startups, scale-ups, mid-sized companies, and large corporations on their critical software projects: platform redesign, modular architecture, integrating Claude Code and AI agents into development workflows, and coaching tech teams. My niche: contexts where speed of execution must be combined with an architecture that will last for 5 years.

⚙️ How I work

26 years of web development, 19 years as a freelancer. Web architect and Tech Lead on international projects. Current stack: TypeScript, .NET, Node.js, React/Next.js, PostgreSQL, with a historical PHP/Symfony expertise that is still active. Since 2024, I have integrated Claude Code and AI agents into my workflow: I deliver 2 to 3x faster on repetitive tasks, allowing me to focus value on architecture, quality, and mentoring.
I can also take on the Tech Lead / Fractional CTO role for teams of 3 to 10 developers — technical scoping, code review, skill development, architectural choices.

📊 What I've delivered

Michelin: Monitoring and development of configuration verification and communication software in factories, regular deployment on 1500 production servers.
Newskill: SAAS human resources management software - Coordination and monitoring of a development team split between Brussels and Colombo (Sri Lanka).
Notifly: SAAS server downtime alerting software entirely driven by Claude and OpenClaw. Creation, MR, and code review entirely performed by agents, as well as server configuration and deployments.

🤝 How we get started

First 30-minute call to scope your needs and confirm I'm the right fit. If so, I'll deliver an action plan within 48 hours. Available immediately for remote missions. Response within 4 hours during business days.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • netaneo
    DevOps Tech Lead
    January 2008 - Today (18 years and 5 months)
    Objective: Creation of innovative technical solutions
    Example of service:
    - Currently responsible for internal applications for the Michelin Group. Monitoring development, testing, continuous integration, and automated deployment.

    - Study, development, and monitoring of the development of a platform for the automated creation of event websites for a company creating corporate seminars, wanting to easily manage all participants, activity selection, and payments, etc.

    - Development of an advertising generation tool for Le Bon Coin. Several hundred thousand ads generated daily.

    Objective: Creation of an innovative technical solution
    Example of service:
    - Currently responsible for internal applications for the Michelin Group. Monitoring development, testing, continuous integration, and automated deployment.

    - Study, development, and monitoring of the development of a platform for the automated creation of event websites for a company creating corporate seminars and wanting to manage all participants, the selection and payment of activities, etc. quickly and easily.

    - Development of an advertising generation tool for Le Bon Coin. Several hundred thousand ads generated every day.
    C# Web Development API Git Gitlab CI/CD
  • KeyTech
    Development Consultant (C# developer)
    January 2008 - December 2018 (10 years and 11 months)
    Example project:
    - Business Development Center: Development of a data retrieval application from a C# webservice to an ASP application.

    - Personal coaching in C# development for the head of development at the International Customs Office in Brussels.

    - Project manager for the creation of an application managing all statistics for the concrete federation (FEDBETON) and for the aggregates federation (FEDIEX) in Brussels.

    - European Association of the American Community in Belgium: Project manager and head of developments for the creation of a user management and tracking application (event management and booking tracking).

    Example project:
    - Business Development Center: Development of a data retrieval application from a C# webservice to an ASP application.

    - Personal coaching in C# development for the head of development at the International Customs Office in Brussels.

    - Project manager for the creation of an application managing all the statistics for the concrete federation (FEDBETON) and for the aggregates federation (FEDIEX) in Brussels.

    - European Association of the American Community in Belgium: Project manager and head of developments for the creation of a user management and tracking application (event management and tracking of bookings).
  • NewSkill
    CTO
    SOFTWARE PUBLISHING
    January 2012 - January 2013 (1 year)
    Montpellier, France
    Objective: Technical management at a start-up for the Hrsys project (http://www.hrsys.com): Human resources management in SAAS mode. Management of a team of 3 people in Brussels and 3 people in Sri Lanka.

    Objective: Technical management at a start-up company for the Hrsys project (- -)
    http://www.hrsys.com): Human resources management in
    SAAS MODE. Management of a team of 3 people in Brussels and 3 in
    people in Sri-Lanka.

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Education

  • Engineer's Degree
    IMERIR
    2000
  • Baccalaureate
    E.I.C - L.I.C.P
    1994

Skill set

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