{"id":3146744,"url":"https://alion.io/job/warren-walter-developpeur-backend-node-js-senior-hf","title":"Développeur Backend Node.js Senior (H/F)","company":{"id":3908725,"name":"Warren Walter","domain":"warren-walter.com","url":"https://alion.io/company/warren-walter","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":50000,"max":55000,"currency":"EUR","period":"year","gross":null,"usd_annual":61692},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Bash","optional":false},{"name":"Fastify","optional":false},{"name":"Git","optional":false},{"name":"GitLab","optional":false},{"name":"JavaScript","optional":false},{"name":"Jest","optional":false},{"name":"Linux","optional":false},{"name":"Mocha","optional":false},{"name":"Nest.JS","optional":false},{"name":"Node JS","optional":false},{"name":"npm","optional":false},{"name":"PM2","optional":false},{"name":"Rest API","optional":false}],"status":"live","first_seen_at":"2026-10-23T09:14:47Z","employer_posted_date":"2026-10-23","last_verified_at":"2026-11-04T19:44:58Z","board_verified":true,"closed_at":null,"days_open":12,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":12},"description":"Rejoignez notre équipe en tant que Développeur Backend Node.js Senior. 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Vous travaillerez avec des environnements techniques modernes et participerez à des projets nécessitant une expertise confirmée en développement JavaScript côté serveur.\nMissions\nConcevoir, développer et faire évoluer des services backend en JavaScript ES6+ avec Node.js 22 ou supérieur.\nDévelopper des applications backend robustes à l'aide de frameworks tels que NestJS, Express, Fastify ou Koa.\nParticiper aux choix techniques et à la structuration des architectures backend afin de garantir la maintenabilité et la performance des applications.\nProfil recherché\nVous justifiez d'au moins **5 ans d'expérience significative en développement backend JavaScript / Node.js**, avec une solide maîtrise de la conception et du développement de services et d'API.Vous maîtrisez notamment :\n* **Backend :** JavaScript ES6+, Node.js 22 ou supérieur.\n* **Frameworks :** expertise sur au moins un framework parmi NestJS, Express, Fastify ou Koa.\n* **API :** conception, développement et sécurisation 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