Warren Barry

For over 10 years, I have been designing and developing my own tools as a full-stack developer, at the core of my independent practice (CRM systems, automation, data management). I continuously evolve these tools by integrating new technologies. Within this framework, I also work in private practice as a therapist, and I provide training in this field as well.

Alongside creating the company, I design and develop the entire information system. I implement an internal network and a client management intranet, with workflow automation via APIs (data distribution, retrieval and integration). The website, connected in real time to the database, allows instant updates of listings. The system is built on a PHP / MySQL stack, with JavaScript (jQuery) interfaces and automation scripts. This complete system, designed and maintained in-house, eliminates the need for external IT services.

At Steria, I started as a developer on assignments for major clients, notably La Poste. Out of curiosity, I began developing skills in cybersecurity, which led me to work on specific missions in this field. I then evolved into project management, eventually taking on the role of IT project manager. I notably worked for Amadeus, where I was responsible for penetration testing and security between the Sophia Antipolis site and the DMZ located in Germany.

Within this startup, I work with major clients, notably La Poste, and evolve toward full stack development (PHP, SQL, API, JavaScript, client/server architectures, scripting). My algorithmic analysis skills allow me to intervene urgently for Cora during the “ILOVEYOU” virus outbreak, restoring over 600 machines in one night, before official solutions were released. This experience significantly broadens my skillset, both technically and methodologically.

I handle hotline support for professional notebook users, ensuring remote diagnosis and resolution of system incidents, or coordinating technical interventions when necessary.

After a few weeks in hotline support, I obtained the MCSE (Microsoft Certified Systems Engineer) certification and moved into international enterprise support for the Southern Hemisphere, working night shifts, mainly with clients from the banking and insurance sectors.

I was responsible for organizing replacement operations for IOMEGA backup products for European clients.

Despite still having a basic level of English, I was quickly hired, notably thanks to job center networks, to perform maintenance on motherboards, scanners, and various controllers.

I was recruited after obtaining my DUT degree to maintain the entire microcomputer fleet (IBM PS/2 PCs) in the Nantes region. My work took place in a sensitive context of technological transition between mainframe systems and microcomputing.