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Sylvain Joffraud l4w
Available for full-remote contracts and fixed-price projects

Senior Full-Stack Developer · 18 years

Sylvain Joffraud_

I engineer your web applications for production.

React, Node.js, PHP/Symfony, DDD/hexagonal architectures, CI/CD and DevOps. 18 years designing, hardening and scaling demanding products — fully remote.

Nantes · full-remote

Trusted by

HiPayTheForkAkeneoSancareStar 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

Frontend

React Vue.js React-Native Angular Gatsby

Backend

Node.js Symfony API Platform Express Spring

Databases

PostgreSQL MySQL ElasticSearch Redis MongoDB ClickHouse

DevOps & Cloud

Docker Kubernetes AWS GCP GitLab CI GitHub Actions Ansible

Tools

Git GraphQL RabbitMQ Sentry Datadog Grafana

Experience

Selected recent work

Payments, e-commerce, booking, PIM, healthcare, real estate — varied and demanding contexts.

Amarris Immo

Full-Stack Developer React · Symfony · Full-remote

2025 — 2026

Two parallel products: Immo-GL (rental management, sole full-stack developer) and Immo-Solo (SCI accounting close, React frontend in a team). Billing engine redesign, Symfony 7 LTS migration, performance audit.

React TypeScript Symfony API Platform PostgreSQL Docker
View details

Akeneo

React · Symfony Developer

2025

“Complex Projects” team: strategic redesign of the product data model (tree structure with attribute inheritance) to position Akeneo against MDM competitors. Legacy Backbone → React migration.

React TypeScript Symfony CircleCI Docker
View details

TheFork · TripAdvisor

React · Node Developer · Full-remote

2021 — 2024

Supply team: new features and legacy decommissioning. Rewrote Symfony services in Node.js (Hapi), reworked user permissions, Sentry/Datadog monitoring, Kubernetes deployments.

React TypeScript Node.js Kubernetes AWS PostgreSQL
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Turbulent · Star Citizen

Full-Stack Developer

2019 — 2020

Star Citizen — Pledge Store: redesign of the spaceship e-commerce store. Exposed PHP framework data via GraphQL for a React/Apollo frontend, AWS deployment.

React GraphQL Apollo Node.js PHP AWS
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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.