REACTIS

Offre d'emploi Java Application Development Support

Munich

REACTIS

Le poste

CDI
Freelance
Dès que possible
2 ans
5 à 10 ans d’expérience
Télétravail partiel
Munich, Bavière, Allemagne
Publiée le 08/01/2026

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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 Munich, 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

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.

Aix-en-Provence, Provence-Alpes-Côte d'Azur
250 - 999 salariés
ESN
REACTIS Groupe est une ESN qui accompagne les entreprises dans leurs projets grâce à ses équipes spécialistes de la transformation digitale. Ses expertises multi-secteurs donnent au Groupe la capacité de répondre à l’ensemble de vos besoins en assistance technique ou dans l’un de ses 3 centres de services.

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Java Application Development Support

REACTIS

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