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Salary
$50k – $68k per year
Location
Hybrid (France)
Employment
Freelance

First seen by Alion on Oct 8, 2026.

Overview
Company
Impact
Profile match
Catamania (Cat-Amania) is a French digital services and IT consulting group that delivers application development, data engineering, project management and cybersecurity work for large corporate clients in banking, insurance and industry. It runs regional agencies in cities such as Paris, Niort, Lyon, Le Mans, Bordeaux, Tours, Lille, Montpellier and Brest, alongside its Umania and Innovia R&D units, and recruits data engineers, Java and Angular developers, application architects, business analysts and PMOs. The company is headquartered in Saint-Herblain near Nantes, France.

Dans un environnement bancaire sécurisé, création from scratch d'un registre d'actifs numériques (APIs, serveurs MCP) et de son portail développeur pour assurer la gouvernance et l'audit réglementaire. Le projet est conçu comme un produit Open Source, générique et extensible.

Missions clés :

  • Développement & API First : Concevoir et développer les APIs backend (NestJS/TypeScript) et contrats OpenAPI.

  • Architecture & Modélisation : Structurer le code en Clean Architecture / Hexagonale et concevoir le modèle de domaine.

  • Sécurité & Qualité : Intégrer l'authentification/autorisation, la gestion des secrets et rédiger les tests (unitaires/intégration).

  • Open Source & International : Documenter pour la communauté et collaborer avec les équipes frontend et production (à l'étranger, anglais requis).

Profil recherché

  • Expertise Technique : NestJS, TypeScript, API Design (REST, OpenAPI), Data & Domain Modeling.

  • Architecture : Clean Architecture / Hexagonale (séparation domaine, application, infrastructure).

  • Sécurité : Authentification / Autorisation (OIDC, OAuth2 ou équivalent).

  • Testing & Qualité : Tests unitaires, d'intégration, éventuellement contract testing.

  • Pratiques & Soft Skills : Culture Open Source, utilisation maîtrisée des outils d'IA, capacité à challenger les choix techniques, autonomie pour construire un produit à partir de zéro.

  • Langues : Français et Anglais professionnel (échanges réguliers avec des équipes de production à l'étranger).

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