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# Développeur Fullstack Java React - Services Financiers - Ile-De-France

- **Company:** Sopra Steria
- **Location:** Paris, France (Remote available)
- **Experience:** Expert
- **Contract:** Temporary contract
- **Skills:** Java (Programming Language), Confluence, Profiling, Code Review, Digital Rendering, Continuous Integration, PostgreSQL, OAuth, Oracle (Applications), Scrum Methodology, Role-Based Access Control, Prometheus, JSON Web Token, SonarQube, SQL Databases, TypeScript, Management of Software Versions, Openapi, Multithreading, ReactJS, Grafana, Spring-boot, Backend, Gitlab-ci, Kubernetes, Apache Kafka, Front End Software Development, React Redux, Restful APIs, Spring Batch, Docker, Jenkins, Microservices
- **Published:** September 30, 2026
- **Apply:** https://isarta.fr/cgi-bin/emplois/externe_candidature.cgi?login=76499

## About the Role

* CI/CD: GitLab CI ou Jenkins, pipelines avancés
 * Docker, orchestrateurs Kubernetes
 * Monitoring & observabilité: Grafana, Prometheus, ELK
 * Qualité: SonarQube, TDD fortement valorisé

Méthodes

 * Organisation Agile/Scrum ou modèle hybride
 * Documentation technique (OpenAPI, Confluence)
 * Culture engineering forte: revue de code, pair programming, Vous êtes diplômé(e) d'une école d'Ingénieur ou d'une formation Universitaire ou équivalent.
 * 5 ans minimum sur la stack

Java + React.js

 * Expérience significative sur des applications critiques dans au moins un environnement:
 * haute volumétrie / temps réel
 * sécurité renforcée
 * scalabilité horizontale
 * Maîtrise

microservices, Kafka, Docker, Kubernetes, CI/CD

 * Déjà intervenu(e) en responsabilité technique sur un périmètre complet (end-to-end)

## Description

Prendre en charge la conception, le développement et l'évolution d'applicatifs critiques (B2C, B2B, internes ou distribués) en Java (microservices) et React.js (SPA) dans des environnements exigeant: performance, haute disponibilité, sécurité, scalabilité, CI/CD avancé.

Backend - Java (obligatoire)

 * Développement de microservices Java 17+ / Spring Boot 3+
 * Architecture distribuée / event-driven: Kafka obligatoire
 * Conception et exposition d'API REST (standardisation, versioning)
 * Implémentation de traitements batch: Spring Batch
 * Optimisation de performances: multithreading, gestion mémoire, profiling
 * Interaction avec

Oracle / PostgreSQL, tuning SQL, indexation

 * Robustesse & sécurité: OAuth2, JWT, RBAC, normes internes

Frontend - React.js (obligatoire)

 * Développement SPA: React 18+, TypeScript, Redux Toolkit
 * Intégration Design System (Material, interne ou équivalent)
 * Gestion d'état avancée, rendering optimisé
 * Tests frontend


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