Freelancer profile translated to English.
Back to original languageAbout Mathys
Fullstack web developer, I help companies design and deploy performant, reliable, and scalable web applications. I work on the entire project cycle, from front-end to back-end, proposing clear technical solutions adapted to your challenges. My added value lies in a pragmatic approach, transparent communication, and a strong focus on user experience and performance.
I regularly assist clients in creating MVPs, developing complete applications, setting up APIs, integrating third-party services, and optimizing and redesigning existing platforms.
My technical stack and expertise are focused on Symfony, Laravel, Spring (Boot/Security/Data/...), Django, but I am also proficient in Angular, React and have a great capacity for adaptation.
French
Native or bilingual
English
Fluent
Can work on-site
Tours (up to 50km), Blois (up to 10km), Orléans (up to 10km)
Experience
- FreelanceWeb and Software DeveloperCONSULTING AND AUDITSFebruary 2022 - Today (4 years and 4 months)France• Design and development of responsive showcase websites and complex business applications (intranet, extranet)• Full-stack development → Front-end: HTML5, CSS3, JavaScript (ES6+), React, Vue.js, Angular → Back-end: PHP, Node.js, Python, Java, Spring• Integration and development of RESTful APIs• Design and optimization of SQL (MySQL, PostgreSQL) and NoSQL (MongoDB, Redis) databases• Use of frameworks and CMS: Symfony, Slim, Laravel, Spring, React, Angular, Django, WordPress, Drupal• Agile/Scrum methodologies & version management with Git• CI/CD and deployment with Docker, Jenkins, AWS, Azure• Performance optimization and technical SEO• Web application security (OWASP)
- Armée de l'Air et de l'EspaceFull Stack DeveloperDEFENSE AND MILITARYSeptember 2023 - September 2025 (2 years)Tours, France• Fullstack web development on business applications → PHP (Symfony, Laravel), HTML/CSS/JS, Twig, PostgreSQL, DSFR, Bootstrap• Systems and network administration, technical support → Linux/Windows, VMWare/VirtualBox, ticket management, deployments• Project management and autonomous leadership of a team of 2 to 6 developers (10 months)• Technical lead on PHP / Symfony• Complete redesign of a critical information system for the AAE→ Transition from 3 authentication mechanisms to 1, reduction from 850 to 30 database tables, workflow optimization, addition of new features• Hybrid methodology (classic / agile)• Responsibilities: project management, technical leadership, client deliveries, change management, user support, documentation writing
- OutlierAI TrainerCONSULTING AND AUDITSJune 2024 - August 2025 (1 year and 2 months)Tours, France• Specialization in fine-tuning AI systems for the French language• Development and organization of training datasets focused on French language models and idiomatic expressions• Creation of culturally relevant prompts tailored to French-speaking users• Evaluation and optimization of AI-generated responses to ensure accuracy and cultural appropriateness• Linguistic monitoring: integration of current trends and events from French-speaking regions• Collaboration with AI teams for specific French improvements in NLP (comprehension and generation)• Compliance with communication standards and language registers (formal, informal, professional, etc.)• Regular quality assessments to ensure a high level of linguistic and cultural accuracy
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Education
- Master of Engineering - MEng, IT Project ManagementSUPINFO2025Master of Engineering - MEng, Gestion de projets en technologies de l'information
- Bachelor of Science in Computer Science, Computer ScienceUniversity of Tours2023Licence Informatique, Informatique
Certifications
- Symfony 7 - SF7MASTERSensioLabs2023
- Power Platform FundamentalsMicrosoft2024