Design, plan, implement integration strategies and patterns in a JEE/HTTP secured ecosystem.

Apply best practices of distributed architecture to solve complex integration problems between information systems.

Design, implement and document APIs to be exposed in a secured manner on a public facing API Gateway.

Design, implement and document business events to be easily produced on a corporate event-streaming platform and consumed by any system from EC.

Design, plan, implement and deploy workflows: business process definition and task definition (service or user tasks) relying on APIs and business events.

Work in a container based infrastructure.

Production of use case models, software architecture documents, design and analysis models, implementation models.

Follow up of the data analysis and data modelling.

Documentation of the technical implementations and the composites.

Participation in technical working groups, progress meetings and meetings with the users.

Assistance in the testing, the technical documentation, the deployment, the evaluation and the reporting.

B2 level of English. Any French knowledge is considered an asset. 

At least 5 years of experience with Java/JEE 

At least 5 years of experience with SOAP and/or REST 

At least 3 years of experience with Jira 

Excellent knowledge of HTTP and API design

Excellent knowledge of JEE and REST or SOAP APIs.

Excellent knowledge of at least one BPMN workflow engine.

Excellent knowledge of asynchronous communication and publish/subscribe techniques and technologies: Apache Kafka, JMS.

Excellent knowledge of integration testing best practices.

Working knowledge of AI-powered code assistants (e.g., Amazon Q, GitHub Copilot) for accelerating coding processes and enhancing developer productivity.

Good knowledge of Docker, Kubernetes and cloud native architectures.

Good knowledge in GRPC and Protobuf format.

Good knowledge of distributed or microservice architectures and complex event processing.

Good knowledge in Web security, OAuth2.0 and OpenID Connect.

Excellent interpersonal and communication skills.

Good writing skills: documentation is part of the tasks.

Ability to produce IT architecture document about complex integration patterns

In depth knowledge of information systems.

Ability to apply high quality standards to all tasks.

English

Java EE

Web Services

BPMN

JIRA

Apache Kafka

Web Security

Our client within the European Institutions is currently looking for a System Integration & Workflow Specialist to work on the design, plan, implement integration strategies and patterns in a JEE/HTTP secured ecosystem.

Public

System Integration & Workflow Specialist

Daily rate: €470-€480

Location:

Brussels, Belgium

Apply before:

25/02/2026

Project summary

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