Freelancer profile translated to English.

Description

I design and improve robust and high-performance web platforms, always focusing on user experience and technical reliability

🚀 Have an idea in mind?

Let's talk! I am always motivated to bring ambitious, useful, and well-built projects to life

🤝 Why work with me?

💡 Total commitment: I am rigorous, involved, and attentive to the smallest detail. Every line of code is designed to last.

🌱 Sustainable vision: I design solid, maintainable, and scalable projects. My goal: to create reliable foundations for the future.

📚 Constant curiosity: I continuously train myself to stay up-to-date and offer modern, efficient, and relevant solutions.

🛠 A true partner: I support you with transparency, pedagogy, and responsiveness, from the first discussion to delivery.

🧰 Mastered Technologies

Back-end: Symfony, Java, Go, Laravel, PHP, REST API,

Front-end: React, Angular, JavaScript, Tailwind, Bootstrap

CMS: WordPress

Other skills: CI/CD, automation, good development practices, and documentation

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Rouen (up to 15km)

TheoMaDev
Full-stack web developer
DIGITAL AND IT
May 2025 - Today (1 year and 1 month)
Rouen, France
💼 First mission: Symfony – Simplified communication for accountants

Since starting my freelance career, I've had the opportunity to collaborate with a web agency specializing in the accounting sector. My mission: to design and develop custom communication modules with Symfony, with the aim of making accounting firms' communication smoother, more intuitive, and more efficient.

🎯 Objectives:

Simplify the communication sending interface as much as possible.

Offer a clear, fast, and accessible user experience for everyone.

Develop a robust and maintainable solution over time.

✅ Result: an interface adopted by users, which now allows firms to manage their communications autonomously.
The success of this collaboration continues today with new developments underway and an excellent client relationship.
Symfony Client Listening UI/UX Design Back-End Development PHP
SGA MOBILITY
Full-Stack Web Developer
AUTOMOBILE
August 2023 - Today (2 years and 10 months)
Rouen, France
Development and improvement of a charging station management platform for electric vehicles (Java, Angular)

Creation of a secure payment microservice, integrated with Lyra and PayPal solutions, ensuring a smooth experience compliant with market security standards.

Design and implementation of an intelligent load management algorithm in Java, optimizing energy distribution based on demand peaks and network constraints.
Implementation of an asymmetric key cryptography system to secure communications and ensure the confidentiality and integrity of sensitive data.

Development of a new supervision interface in Angular, with a complete UI/UX redesign: clearer, more responsive, and more intuitive interface for operators, improving readability and usability.
Implementation of end-to-end (E2E) tests with Playwright, ensuring the reliability of the user interface and the robustness of critical workflows.

Optimization of application performance: significant reduction in latency, controlled load scaling, and overall improvement of platform scalability.

Development of a showcase website with Symfony

Design and development of a website optimized for search engines (SEO), leading to better positioning in Google search results. Result: increased traffic and sales.

Creation of a custom back-office to facilitate content management and information updates by the internal team.
Improvement of the customer experience through clear, up-to-date communication and optimized navigation.

Direct contribution to enhancing the company's image and its competitive positioning in the market.

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

Baptiste Duhen

Fullstack developer

4.6

(4)

Amed Hamou

Senior Lead Developer

(2)

Audrey Champion

Web developer

4.3

(3)

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Bachelor in Digital Project Management, specialization in Web Development
NormandieWebSchool
2025
J'ai suivi un Bachelor Chef de Projet Digital, spécialité Développement Web à la Normandie Web School, où j'ai acquis des compétences solides en gestion de projets numériques et en développement web (JavaScript, PHP, Docker, Symfony, Next.js, React.js,...). Ma formation m'a permis de travailler sur des projets concrets en collaboration avec des entreprises, renforçant ainsi ma capacité à concevoir et mener à bien des initiatives digitales. Je suis prêt à mettre en œuvre mes compétences techniques et ma vision stratégique pour contribuer efficacement à des projets numériques ambitieux.
1st Year Bachelor's Degree, Mathematics and Computer Science
University of Le Havre Normandy
2022
L1 , Mathématiques et informatique

Check out Théo's education

Théo Maerten

Full-Stack Developer | Symfony | React | Java

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