Eficiens · CCMO Mutuelle
Full-Stack Symfony Developer · Full-remote
Health insurer sales: untested Symfony POC made production-ready, PHP coverage 0 → 85% in seven months.
Symfony 7.4 PHP 8.2 DDD Twig UX GitLab CI WCAG
View details Available for full-remote contracts and fixed-price projects
Senior Full-Stack Developer · 18 years
Sylvain Joffraud_
I engineer your web applications for production.
Senior Full-Stack developer with 18 years of experience in TypeScript: Node.js (NestJS) or PHP/Symfony on the back end, React on the front end. I turn proofs of concept into production apps, retire legacy systems without breaking the service, and take over live applications — fully remote.
Trusted by
CCMO MutuelleHiPayTheForkAkeneoSancareStar CitizenAmarris Immo
What I bring
From idea to a reliable, shipped product.
A senior partner covering the whole chain, from front-end to deployment — and accountable for it.
01
Reliable & secure apps
Design and build of robust, tested and maintainable applications.
02
Scalable architectures
DDD, hexagonal, Clean Architecture: healthy foundations that last.
03
CI/CD & quality
Pipelines, automated tests and code review to ship fast without breaking things.
04
Legacy stabilization
Tech-debt reduction and controlled, progressive migrations.
05
Team mentoring
Upskilling, pair programming and spreading best practices.
06
Transparency
Daily activity report: you always know where your project stands.
Stack
Technical skills
18 years of practice, from front-end to deployment.
Languages
JavaScript TypeScript PHP Python Java HTML CSS/SCSS
Frontend
React Vue.js React-Native Angular Gatsby
Backend
Node.js NestJS Symfony API Platform Express Hapi Spring
Databases
PostgreSQL MySQL ElasticSearch Redis MongoDB DynamoDB ClickHouse
DevOps & Cloud
Docker Kubernetes AWS GCP GitLab CI GitHub Actions CircleCI Ansible
Tools
Git GraphQL RabbitMQ Sentry Datadog Grafana Kibana
Experience
Selected recent work
Payments, e-commerce, booking, PIM, healthcare, real estate, events — varied and demanding contexts.
Amarris Immo
Full-Stack Developer React · Symfony · Full-remote
Two real-estate SaaS, one built solo: JS bundle −52%, PHPStan debt at zero, Symfony 7.4 / API Platform 4.
React TypeScript Symfony API Platform PostgreSQL Docker
View details Akeneo
React · Symfony Developer
“Complex Projects” team: attribute inheritance between families (Summer 2025 release), Backbone → React.
React TypeScript Symfony CircleCI Docker
View details TheFork · TripAdvisor
React · Node Developer · Full-remote
TheFork Manager: legacy Symfony retired, critical features rewritten in Node.js for 55,000 restaurants.
React TypeScript Node.js Kubernetes AWS PostgreSQL
View details Turbulent · Star Citizen
Full-Stack Developer
Star Citizen — Pledge Store: redesign of the store of a game crowdfunded with over $250M by its players, with sales peaks during events. GraphQL API on the PHP framework, React/Apollo front end, AWS.
React GraphQL Apollo Node.js PHP AWS
View details Got a contract or a fixed-price project?
Let's talk about your needs and see how I can help — staff augmentation or fixed-price, 100% remote.