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Salary
≈ $49k – $88k per year (Estimated)
Location
Hybrid (Paris, France)
Employment
Freelance

First seen by Alion on Oct 26, 2026.

Overview
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Profile match
Octopus Group is a French IT and business transformation consultancy that supports chief information officers from cybersecurity to big data, cloud and project governance. It places consultants on assignments such as IBM i expertise, technical infrastructure project management and business acceptance testing in pension and social protection. The company is headquartered in Paris, France.

Octopus Group recherche un Développeur Back-End Node.js expérimenté pour une mission auprès d’un grand acteur des médias. Vous construirez des services backend robustes et des API sécurisées, en collaboration avec les équipes front-end web/mobile, Produit, Design et Exploitation.

Vos missions :

• Concevoir et développer des backends en JavaScript ES6+ sur Node.js 22 ou supérieur.

• Construire, documenter et sécuriser des API REST JSON.

• Mettre en œuvre des tests automatisés et suivre la couverture de code.

• Participer aux workflows Git/GitLab et à l’industrialisation des développements.

• Améliorer la fiabilité, la maintenabilité et les performances des services.

• Documenter les choix techniques et expliquer les sujets complexes aux interlocuteurs produit.

• Contribuer aux rituels et à l’amélioration continue Agile.

Profil recherché

5 ans d’expérience significative attendus. Expertise Node.js récent (22+), JavaScript ES6+ et au moins un framework parmi NestJS, Express, Fastify ou Koa. Maîtrise API REST, JSON/YAML, tests Jest ou Mocha/Chai/Sinon, couverture Istanbul/NYC, Bash Linux/Mac, NPM/Nodemon/PM2 et Git/GitLab. Lecture de documentation technique en anglais et pratique Agile requises. Appréciés : MySQL/MariaDB, MongoDB/Redis, Prisma/TypeORM, Elasticsearch, Docker/Compose, Worker Threads, WebSockets/SSE, Pub/Sub, Faye, OAuth2/JWT/SSO, HTTP/CORS, Cucumber/Gherkin, Swagger/Postman/curl, Markdown/Confluence et HTML5/CSS3.

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