Freelancer profile translated to English.

Description

Senior Backend Developer | Symfony | NestJS | TypeScript

Your application shows signs of **technical debt**, **performance issues**, or **scaling difficulties**? Are you looking for a developer capable of structuring your backend to handle long-term load?

I intervene torebuild, stabilize, or build**robust** backends with a modern stack: **PHP/Symfony, TypeScript/NestJS, and Node.js**. My goal: to deliver clean, tested, documented, and future-ready code.

What I do concretely for you:

I rebuild, stabilize, and build robust backends with PHP/Symfony and TypeScript/NestJS. My goal: clean, tested, documented, and future-ready code.

With over 10 years of experience, I have assisted both startups and large corporations:

-Hermes— Design of a stock management micro-service (NestJS)

-Deezer, Singulart, Balthasart— Tech Lead, architecture, and backend development

- Quitoque, Tediber— Development and evolution of web applications

My philosophy: **Software Craftsmanship**, tested code, Domain-Driven Design, and hexagonal architecture. I prioritize quality, transparency, and regular communication with my clients through progress reports.

Concretely, I can assist you with:

- Backend development (PHP/Symfony, TypeScript/NestJS, Node.js)

- Software architecture and technical migration

- CI/CD implementation and testing strategy

- Tech Lead: team management and technical choices

- Code audit and technical debt reduction

Contact me for an initial video call. I respond within 2 hours on weekdays via Malt messaging.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km), Tours (up to 10km)

MYM
Backend Developer
SOCIAL NETWORKS
October 2024 - March 2026 (1 year and 5 months)
Paris, France
Migration from Symfony 5.3 to 7.0 and PHP 7.4 to 8.5 on a critical codebase with zero downtime and documented risk management.

Writing ADRs (Architecture Decision Records) before each implementation to clarify technical challenges and facilitate team decisions.

Modernization of legacy code towards clean architecture (DDD principles), improving testability and reducing technical debt.

Performance optimization: advanced SQL queries, strategic indexing, caching to ensure optimal performance under high traffic volumes.

Rigorous application of Software Craftsmanship - demanding code reviews, systematic testing, technical documentation.

Close collaboration with the tech team to propose suitable solutions and maintain high quality standards.
Symfony Clean Architecture TDD Unit Tests Architecture
Hermès
Backend NodeJS Developer
July 2023 - November 2024 (1 year and 4 months)
Paris, France
- Design and development of a stock management micro-service for Hermes

- Implementation of solutions to ensure micro-service availability and reliability

- Participation in micro-service integration and testing

- Collaboration with other teams to ensure data and system consistency

Software Craftsmanship Philosophy
Tested code
Hexagonal Architecture
Domain Driven Design
TypeScript NestJS REST
Balthasart
Tech Lead
March 2022 - February 2023 (11 months)
Paris, France
🚀 Develop new features
By working on new feature development, I continuously contributed to enriching the user experience on our marketplace.

🔧 Maintain existing systems
Ensuring the stability of our platform, I oversaw the regular maintenance of existing systems, thus guaranteeing a reliable and performant environment.

🐞 Fix bugs
The perpetual quest for perfection led me to identify and efficiently fix bugs, thereby optimizing the quality of our service.

🚀 Rapidly test ideas
Balthasart's culture of innovation allowed me to quickly test ideas to assess their market fit, fostering our startup's agility.

💡 Advise on technical challenges
As a technical referent, I advised the team on best practices, technological choices, and specific challenges encountered, ensuring the project's smooth progress.

🛣️ Provide technical direction for the project
Defining a clear and ambitious technical vision was at the heart of my mission. I guided the team towards sound choices to ensure the long-term scalability and relevance of our platform.

This experience at Balthasart was a stimulating adventure, where I was able to combine my technical skills with my passion for development and supporting emerging artists. Contributing to their business growth by shaping an innovative platform has been a constant source of inspiration and professional satisfaction.
PHP Symfony IS Architecture