{"id":2012818,"url":"https://alion.io/job/xxii-senior-fullstack-engineer-fh","title":"Senior Fullstack Engineer - F/H","company":{"id":172646,"name":"XXII","domain":"xxiiai.com","url":"https://alion.io/company/xxii-2","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":["Puteaux, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":50000,"max":70000,"currency":"EUR","period":"year","gross":null,"usd_annual":78769},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Kubernetes","optional":false},{"name":"Next.js","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-09-30T11:27:13Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-11-04T07:41:40Z","board_verified":true,"closed_at":null,"days_open":34,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":34},"description":"Rejoins une entreprise tech française en pleine expansion dans le domaine de l'IA. En tant que Senior Fullstack Engineer, tu auras un impact direct sur notre plateforme de vision par ordinateur, CORE®, déployée sur plus de 450 sites. Tu travailleras sur le développement fullstack, l'infrastructure et l'intégration de l'IA dans nos processus.\nMissions\nConcevoir et livrer des fonctionnalités de bout en bout sur la plateforme CORE, du front (Next.js / React) au back (Python), avec une exigence de qualité et de performance.\nConteneuriser, déployer et opérer des services (Kubernetes) - mettre en production ce que vous codez, sans dépendre de quelqu'un d'autre.\nCréer vos propres outils et workflows que vous partagez à l'équipe, et chercher en continu à automatiser et transformer les processus internes.\nProfil recherché\n* Tu as une **expérience significative** en développement fullstack (senior confirmé / lead tech).* Tu es solide des deux côtés : front en **JS / TS** (React, Next.js) et back en **Python**.\n* Tu es à l'aise avec l'**infra** : conteneurisation (Docker), orchestration (K8s), CI/CD - tu déploies ce que tu codes.\n* Tu as déjà **intégré l'IA dans ta façon de travailler** et tu vois où elle fait gagner du temps, pour toi et pour les autres.\n* Tu raisonnes **architecture, dette technique, scalabilité** et tu sais arbitrer entre vitesse et robustesse.\n* Tu es autonome, pragmatique et tu prends des décisions, pas juste des avis.\n**Senior Fullstack Engineer** : un profil IC senior, à l'aise du pixel au déploiement, capable de porter une feature de bout en bout, du front au back, jusqu'à l'infra qui la fait tourner.\n### Ce qu'on offre\n* Un rôle à fort impact dans une boîte tech française qui scale sur un sujet IA de pointe.\n* Une vraie culture d'engineering : liberté d'outiller, d'automatiser, de proposer.\n* **Hybride**, équilibre présentiel / remote.\n* Une équipe qui code avec les meilleurs outils du moment - 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