Senior Full-Stack Developer (E-commerce)

Quick Facts

• Role: Senior Full-Stack Developer (E-commerce)

• Location: Paris (hybrid: 2 days/week remote)

• Start: 4 January 2027

• Duration: 12+ months

Description

You will strengthen an e-commerce team by developing and maintaining the site’s technical components and connecting the services required for the platform to work correctly. The role covers back-end and front-end feature development (catalog, cart, orders, payment, delivery, etc.), plus API development for mobile apps. You will also write unit and integration tests, troubleshoot issues reported by Sentry, and address performance problems while reducing technical debt.

Responsibilities

• Develop back-end and front-end features for core e-commerce flows

• Develop and maintain APIs for mobile applications

• Write unit and integration tests to support feature validation in integration

• Investigate issues reported by Sentry and improve performance

• Reduce technical debt and produce clean, maintainable code

• Collaborate with the SI project manager and help the client marketing team understand the technical solutions in place

Requirements

• Recognized experience on full-stack projects, especially with Node.js

• Mastery of Node.js, Express, MySQL (Knex), and Redis

• React skills

• Knowledge of Jest and/or Jasmine

• Experience with Docker, Git, and GitLab CI/CD

Benefits

• Agile methodology with 2–3 week cycles

• Work style: autonomous, proactive, able to explain technical topics to non-technical people