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Jonathan CastelainJC

Jonathan Castelain

Solution Architect / Engineering Manager

€578/day
Lille, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jonathan

In IT for 16 years, IT chose me when I was only 6 years old.
Starting with Windows 3.1 and Basic under DOS, I entered the professional world in 2008 as a Delphi Developer, eventually moving into software or solution architecture since 2019, and more recently technical team leadership.

I am recognized for my 360-degree view of IT, my pragmatism, my adaptability, my ability to teach, and my skill in simplifying complex topics.

I've been repeating this phrase for 16 years: "You can't be a good technician if you don't understand the business you're working for."

I am not a literary person, although I am an intellectual; I learn much better through practice than through hypothetical scenarios.

My job is not to sell you dreams, it's to bring you concrete results.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • ASAP
    Solution Architect / Engineering Manager
    July 2025 - Today (11 months)
    To meet freelance needs.
    I created my company named ASAP.
    I also trained in TOGAF.
  • Sources ALMA
    Senior Consultant
    March 2025 - March 2025
    I am intervening again on the client's Openshift platform to understand and correct a new anomaly that occurred in the BI report generation process.
  • SII
    SMIL - Career Manager
    April 2023 - March 2025 (1 year and 11 months)
    I am responsible for supporting 6 employees in their career development. I serve as their point of contact for training needs/desires. I work on salary increase proposals and defend them in management committees.

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Education

  • ITIL v3 Certification
    Axelos
    2015
    Certification ITIL v3
  • BTS Computer Science and Networks for Industry and Technical Services
    Lycée Gustave Eiffel
    2008
    BTS Informatique et Réseau pour l'Industrie et Services techniques

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