Fullstack Developer PHP / JavaScript / TypeScript

October 16, 2026

Office

Senior

Paris

Keep in mind

Original vacancy is in French
You will likely need French for the job. The employer can confirm
Office-only work

Description

Free (Groupe iliad) is hiring a Fullstack Developer for its network management and automation platforms. The role reports to the Lead Dev and Head of Network Automation and covers end-to-end development across servers, databases, backend and frontend, working between existing environments and new projects. The stack spans PHP (Symfony, Laravel), Python, TypeScript, NextJS and SQL databases.

Responsibilities

Maintain and evolve legacy applications and the technical stack with security best practices and package upgrades
Develop backend features in PHP with Symfony, Laravel and in-house frameworks, and in Python
Build frontend interfaces with Twig, Blade, JavaScript, TypeScript and NextJS
Design and evolve SQL databases
Design APIs for other development teams and external consumers using Symfony and Python/FastAPI
Install, configure and maintain application servers and databases
Deliver end-to-end development across servers, databases, backend and frontend for network automation platforms

Requirements

Master PHP with hands-on legacy skill and at least one MVC framework
Good understanding of REST API design principles
Working knowledge of MySQL and PostgreSQL databases
Proficiency with Git version control
Solid CSS and JavaScript skills
Bac+5 or equivalent degree in computer science or software engineering
Minimum 3 years of fullstack development experience on large-scale web projects
Python knowledge, ideally FastAPI, or willingness to learn it on the job
Experience with NextJS on the frontend
Knowledge of ClickHouse or MongoDB
Docker and hands-on continuous integration and delivery (CI/CD) practice
Autonomy and strong analytical problem-solving mindset
Service and quality mindset with good technical communication

Conditions

Full-time contract with profit-sharing and bonus tied to Groupe Iliad performance
Swile meal card worth 10 €/day, 60% funded by the employer
Transport reimbursement of up to 70%
Health insurance and provident coverage
Freebox subscription reimbursement and CSE employee benefits
Compte Épargne Temps (time savings account)