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ESN
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Cette offre est publiée par une ESN. Le poste peut être situé au sein de l’entreprise indiquée ou chez un client pour lequel elle recrute.
Java Application Development Support H/F Reactis Services
- Allemagne
- CDI
- Télétravail occasionnel
- Bac +3, Bac +4
- Bac +5
- Secteur informatique • ESN
- Exp. 5 ans min.
Les missions du poste
This skill covers the ability to design, develop, maintain, and support enterprise Java applications operating in an Oracle-based environment, including Web user interfaces developed with Oracle tools, with long-term on-site support in Bavaria (Germany).
1. Java Enterprise Development
- Development of applications using Java SE / Java EE (Jakarta EE)
- Implementation of Servlets, JSP, JSF, and Oracle-oriented frameworks
- Management of the HTTP request/response lifecycle
- Design and implementation of RESTful Web Services (JAX-RS) and, where required, SOAP services
- Session handling, authentication, authorization, and application-level security
2. Oracle Environment
- Proven experience within the Oracle ecosystem, including:
- Oracle Database (SQL, PL/SQL, stored procedures, packages)
- JDBC connectivity and connection pooling
- Transaction control and query performance tuning
- Deployment and configuration on Oracle WebLogic Server:
- Application deployment and lifecycle management
- Configuration of datasources, JMS resources, and security realms
- Operational support across DEV, TEST, and PROD environments
3. Request / Response Architecture
- Design and maintenance of multi-tier architectures:
- Web Frontend Application Server Oracle Database
- Enforcement of separation of concerns:
- Presentation layer
- Business logic layer
- Data access layer (DAO / Repository patterns)
- Error handling, exception management, and HTTP response management
- Logging, monitoring, and performance tracing
4. Web Interface Development with Oracle Tools
- Development of Web interfaces using:
- Oracle ADF (Application Development Framework)
- JSF with Oracle UI components
- Frontend-backend data binding and state management
- Implementation of forms, validations, navigation flows, and workflow logic
- Integration of frontend components with backend services through synchronous requests
5. On-Site Activities in Bavaria (Germany)
- The role includes full or partial on-site presence in Bavaria, Germany, for an estimated duration of approximately 24 months, with activities such as:
- Direct collaboration with local development, operations, and business teams
- Participation in on-site technical workshops, design sessions, and sprint planning
- Support during application rollout, stabilization, and production go-live phases
- Troubleshooting of production incidents requiring physical presence
- Knowledge transfer, technical coaching, and documentation for local teams
- Coordination with German stakeholders to align functional requirements and technical solutions
- Compliance with local IT, security, and operational procedures
6. Application Support and Maintenance
- Diagnosis and resolution of application issues and defects
- Support for:
- Functional enhancements
- Code refactoring
- Java, Oracle Database, and WebLogic version upgrades
- Performance analysis and system optimization
- Contribution to technical and operational documentation
7. Tools and Development Practices
- IDEs: Oracle JDeveloper, Eclipse, IntelliJ IDEA
- Version control systems (Git, SVN)
- Build and deployment tools (Maven, Ant)
- Unit and integration testing (JUnit and related frameworks)
- Close cooperation with DBAs, system administrators, QA teams, and functional analysts
Le profil recherché
Key profile characteristics:
- 5+ years of experience in Java enterprise application development and/or application support
- Strong understanding of end-to-end application lifecycles in complex enterprise environments
- Comfortable working across development, maintenance, and production support phases
- Ability to collaborate with international and cross-functional teams
- Autonomous, structured, and reliable, with strong problem-solving skills
- Willingness to work on-site in Bavaria for long-term assignments (up to ~24 months)
- Professional working proficiency in English (German is a plus but not mandatory)
- This role is well suited for candidates looking for long-term stability, deep technical involvement, and close collaboration with on-site business and technical stakeholders in a mission-critical environment.
Bienvenue chez Reactis Services
Labellisé Best Workplace Expérience, le groupe Reactis entre en 2022 dans le top 30 du classement. ESN (Entreprise de Services Numériques) et éditeur de logiciels d'environ 400 collaborateurs, Reactis a 20 ans d'existence et la ferme volonté de poursuivre sa croissance, en France et à l'international, par la qualité de ses prestations et partenariats. Initiatrice d'un GIE (groupement d'intérêt économique) permettant de répondre à des appels d'offre d'envergure, Reactis est ainsi capable de rivaliser avec les plus grandes ESN.
Nos experts interviennent pour nos clients Grands Comptes et PME innovantes, notamment dans les secteurs de l'aéronautique, de l'industrie, des services, de la finance et de la protection sociale. Nos bureaux sont situés à Aix-en-Provence (siège), Marseille, Paris, Massy, Lyon, Nantes, en Italie et au Canada.
Publiée le 08/01/2026 - Réf : 3732964/27070192 JADS/A
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Java Application Development Support H/F
- Allemagne
- CDI
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