Freelancer profile translated to English.
Back to original languageAbout Sylvain
Looking for your Fullstack PHP/Symfony/Angular Developer to strengthen your team or deliver a project on time?
I design and develop performant, maintainable, and scalable web applications — from robust REST APIs to responsive Angular interfaces.
7 years of experience on large-scale projects in the Finance, Health, and Real Estate sectors, with applications supporting up to 3 million active users in production.
My expertise:
- **Backend**: Robust and scalable REST APIs (Symfony, API Platform, Doctrine, Redis, Elasticsearch)
- **Frontend**: Ergonomic, responsive, and interactive interfaces (TypeScript, Angular, Angular Material, RxJS)
- **Quality & Performance**: Unit/functional tests (PHPUnit), response time optimization for up to (3 million users), CI/CD, and clean code best practices
Beyond technical skills, I bring a results-oriented vision: improving application performance, meeting deadlines, and a strong focus on code maintainability.
Curious, rigorous, and proactive, I integrate quickly into an agile team and contribute to both the creation of new products and the refactoring and optimization of existing ones.
- **Backend**: PHP 8, Symfony 4/5, API Platform, Doctrine, Redis, Elasticsearch
- **Frontend**: Angular, React.js, RxJS, Angular Material, Bootstrap
- **DevOps & Tools**: Docker, GitLab, Postman, Varnish, GitHub
- **Tests & Quality**: PHPUnit, SonarLint, PHP CS Fixer
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- DIOT-SIACIFullstack Developer PHP Symfony & AngularBANKING AND INSURANCEApril 2022 - Today (4 years and 2 months)Paris, FranceDevelopment of critical business modules (membership management, contracts, contributions) in hexagonal architecture with DDD and CQRS patterns• Design and development of REST APIs with API Platform in a microservices architecture• Implementation of secure authentication (JWT, SSO)• Development of reusable Angular 16+ components for insured portals and back-offices• Guarantee of GDPR compliance and adherence to application security standards• Balancing complex business needs, security requirements, and performance constraints• Development and execution of unit and functional tests (PHPUnit, Jasmine/Karma)• Continuous improvement of code quality with PHPStan and regular code reviews• Close collaboration with the product team
- BARNESPHP Symfony DeveloperREAL ESTATESeptember 2021 - March 2022 (7 months)Neuilly-sur-Seine, FranceParticipation in sprint planningDevelopment of Back and Front-end features PHP/Symfony Mailing with SendinblueUnit testing PHP Unit
- KalisoftPHP ConsultantDIGITAL AND ITJanuary 2020 - June 2021 (1 year and 5 months)Paris, FranceMissions:• Analysis and design• Design and development of Angular components• Development of new features in PHP/Symfony• Evolutionary and corrective maintenance• Technological watch, search for external libraries compatible with business and technical needs, or propose migrations• Participation in sprint planning• Code review and testing (unit, functional)
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Education
- State Engineer in Computer ScienceNational Engineering School of Computer Science and Systems Analysis (ENSIAS, Morocco)2017
- Preparatory Classes for Grandes Ecoles (CPGE)Preparatory Classes for Grandes Ecoles (CPGE), Mohamed V Technical High School of Beni Mellal (Morocco)2014