Java Developer & Integrator

Project overview

Our client in the Banking and Finance sector is looking for a Java Developer & Integrator H/F

Job Description:

Application Integrator / Java Developer

Mission Context

Within the IT Department, you will join a team responsible for the integration and maintenance of business applications.

The mission is part of replacing a resource whose assignment ends on December 31, 2026. The need is hybrid, with a distribution of approximately:

Start date is desired for early December 2026, to allow for a handover period with the consultant currently in place.

Main Missions

Application Integration

Application Development and Maintenance

Technical Support and Coordination

Required Technical Skills

Behavioral Skills

Essential Skills / Qualities:

List of integration functions requested for the mission: Contribute to the application integration of projects, up to production deployment, Take charge of integration activities, supporting program and deadline management, Coordinate and ensure the assembly of different IS components respecting the architecture chosen for the project, Ensure the proper functioning of environments provided for testing and acceptance, Use functional and technical expertise to diagnose incidents, resolve first-level ones, and efficiently escalate incidents requiring further expertise, Provide technical support to development and testing stakeholders: Project Manager, project squads, system team, test teams, external partners, integrator

• 50% application integration;
• 50% Java development, with possible openness to C#/.NET.
• Contribute to the application integration of projects, up to production deployment.
• Take charge of integration activities, supporting program and deadline management.
• Coordinate and assemble the various components of the information system, respecting the chosen architecture.
• Ensure the proper functioning of environments provided for testing and acceptance.
• Participate in deployments in non-production environments.
• Support teams during integration, qualification, and acceptance phases.
• Monitor components and technical dependencies.
• Participate in the development and maintenance of business domain applications.
• Primarily work on Java developments.
• Be able to also work on C#/.NET components.
• Analyze application and technical malfunctions.
• Use application logs to identify the root cause of incidents.
• Resolve first-level incidents and escalate incidents requiring additional expertise.
• Contribute to improving application reliability and maintainability.
• Provide technical support to project managers, squads, development teams, and testing teams.
• Collaborate with System Teams, external partners, and the integrator.
• Work in coordination with the KGIP partner.
• Communicate transversally with various internal and external teams.
• Participate in monitoring incidents, anomalies, and corrective actions.
• Contribute to the documentation of integration and deployment procedures.
• Approximately 5 years of experience as a Java developer, application integrator, or hybrid profile.
• Solid mastery of Java.
• Knowledge of C#/.NET, ideally.
• Experience in application integration.
• Mastery of GitLab and CI/CD practices.
• Experience deploying applications in various environments.
• Ability to analyze application and technical logs.
• Knowledge of test, acceptance, and pre-production environments.
• Experience in incident resolution and malfunction diagnosis.
• Understanding of application architectures and component interactions.
• Ability to work transversally with multiple teams.
• Good interpersonal skills and communication with technical and functional stakeholders.
• Analytical mindset and ability to investigate incidents.
• Technical curiosity.
• Autonomy and rigor.
• Ability to meet deadlines and follow priorities.
• Aptitude for working in an application maintenance and evolution environment.

Nice to have

Experience working transversally / Good interpersonal skills / Ability to delve into logs

Information regarding teleworking:

Yes - 2 days/week

Project details

• Start: flexible
• Remote: hybrid
• Location: Paris, France, FR
• Rate: 56-56 EUR/h
• Languages: French