Freelancer profile translated to English.

Description

Looking for a senior PHP / Symfony developer to strengthen your back-end?

💻 12 years of experience in PHP / Symfony. I work with both large corporations and startups, in various sectors: media, e-commerce, energy, insurance, health.

Among my clients: Le Figaro, L'Équipe, Audi France, Fnac Darty, LexisNexis, Engie, Audika...

What I work on:

- Creation of Symfony REST APIs - design, migration, maintenance

- Monolith decomposition & back-end redesign (Layered Architecture, DDD)

- Code quality: unit tests, code review, best practices, version upgrades

- Security & performance: vulnerability identification, optimization

- Team training (SOLID, Clean Code, Clean Architecture, CQRS, unit tests)

- Management of AI agents integrated into the development workflow (Claude Code, assisted TDD, zero regression)

My skills:

- PHP (7.0 to 8.x), Symfony (all versions)

- REST API

- Docker and CI/CD

- MySQL, PostgreSQL, MongoDB

- Unit tests (PHPUnit)

- OAuth2, JWT, API Security

Industry field of expertise

Languages

English
Fluent
French
Native or bilingual

Workplace preferences

Can work on-site

Paris (up to 50km), Lille (up to 50km), Bordeaux (up to 50km), Strasbourg (up to 50km), Marseille (up to 50km)

Audika
Senior PHP / Symfony Developer
MEDICAL
July 2025 - Today (11 months)
Saint-Ouen, France
Audika is a company distributing hearing aids, listed on the Paris Stock Exchange until December 24, 2015.
Founded in 1976, Audika was the first French network of hearing aid centers in France.

Mission:
Creation of a cash closing tool / software for all group agencies
▫ Work on creation, design, and training teams on the Symfony framework
▫ Maintenance, bug fixing of an existing application in legacy PHP
▫ Use of the LAST stack (LiveComponent, AssetMapper, Stimulus, and Turbo) for the different components of the cash register software
▫ Layered Architecture and implementation of use-cases for various functionalities

Tool for exporting billing data to Microsoft Dynamics D365
▫ Implementation of XML file export scripts with Symfony Scheduler
▫ Transformation of data into XML files (customer records, billing, payments) for transfer to DFO

Creation of an article / product catalog import tool
▫ Implementation of a tool for mass importing supplier article catalogs

Context:
▫ Team: 1 Lead dev, 1 backend PHP
▫ Agile Method (SCRUM / Kanban)
▫ Technologies: PHP8, Symfony 7, Oracle, Docker, Twig
▫ Tools: Bitbucket, Jira, Confluence
▫ Unit tests: No
▫ Code Review: Yes
PHP Symfony Clean Code Oracle LAST Stack
LexisNexis
Senior PHP / Symfony Developer
LEGAL
May 2024 - May 2025 (1 year and 1 month)
141 Rue De Javel, Paris, France
LexisNexis is a global group with activities in professional publishing and the provision of legal and economic information services. The group itself is part of the Anglo-Dutch group RELX (formerly Reed Elsevier), one of the world's leading professional publishing and information groups.

Mission:
Creation of an API following the decomposition of a monolith into 2 applications: Front (Angular), and Back (PHP Symfony)
Work on creation, migration, and maintenance of 2 APIs and 1 application
Migration of endpoints from a NodeJS API to Symfony 7, and implementation of unit tests
Maintenance, bug fixing of an existing PHP application
Assistance in decomposing a monolith into 2 parts (front and back)
Creation of a second API to replace the back-end part (Layered Architecture)
Development of endpoints for creating simulations of legal proceedings via API
Context:
Project duration: Ongoing
Team: 1 Lead, 1 backend PHP, 1 back Python
Agile Method (SCRUM)
Technologies: PHP8, Symfony 7, PostgreSQL, Docker, Angular
Tools: Azure DevOps
Unit tests: PHPUnit
Code Review: Yes
PHP Symfony Clean Code REST APIs Vue.js
TEKSIAL
Senior PHP / Symfony Developer
ENVIRONMENTAL
January 2023 - March 2024 (1 year and 2 months)
54 Avenue Jean Jaurès, Colombes, France
Teksial, a subsidiary of the ENGIE group, is an energy efficiency services company and a delegate for Energy Savings Certificates (CEE).
Mission: Assistance in the redesign of the back-office & implementation of development best practices
Creation of an API in PHP Symfony allowing clients to create CEE financing projects
Upgrade of the Symfony framework from version 4 to 5.4 - Migration from PHP 7.4 to 8.2
Various bug fixes and security updates
Creation of new eligible CEE products based on government regulatory changes
Providing training (unit tests, SOLID principles, DDD, event sourcing in a CQRS project)
Context:
Project duration: 1 year
Team: 8 developers, 1 Lead Dev, 3 POs.
Agile Method (SCRUM)
Technologies: PHP7.4 / PHP8, Symfony 4 to 5.4, MySQL, Redis, Docker, KAFKA, Elasticsearch,
Tools: Jira, Github
Unit tests: PHPUnit
Functional tests: Cypress
Code Review: Yes
PHP Symfony MySQL Redis Docker

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Expert in Computer Science Bachelor's +5, Computer Development / Programming, General
ETNA, School for Computer Science Apprenticeship
2014
Expert en Informatique Bac+5, Programmation / développeur informatique, général

Quincy Gelan Sainte-Rose

Backend Developer Symfony | PHP | REST API

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