Define and maintain the target cloud architecture of EUSurvey 2.0

Ensure compliance with approved Architecture Principles and Architecture Document

Design modular application architecture (modular monolith with defined boundaries)

Design extensibility mechanisms for survey types

Define API architecture (OpenAPI-based, API Gateway integration)

Define asynchronous processing architecture (Kafka/event-driven workflows)

Design secure separation between public and administrative components

Design Kubernetes-based deployment architecture

Define containerisation and CI/CD integration patterns

Define observability architecture (logging, metrics, tracing)

Define resilience, scalability, and high-availability patterns

Integrate security-by-design and privacy-by-design principles

Define architecture supporting audit logging and traceability

Ensure architecture supports retention and deletion workflows

Ensure open-source compliance and portability constraints are respected

Act as technical interface between Project Manager, internal teams, and external developers

Review architectural deliverables from suppliers

Participate in architecture boards and technical working groups

Contribute to procurement technical specifications

Produce and maintain architecture documentation

B2 level of English minimum. Any level of French is an asset.

At least 6 years of experience in application and cloud architecture

At least 4 years of experience with Spring Boot and Java-based backend systems

At least 3 years of experience designing cloud-native or container-based systems

Experience in defining scalable, secure web application architectures

Very good knowledge of cloud-native architecture patterns

Very good knowledge of Kubernetes-based deployment

Very good knowledge of microservices and modular monolith architectures

Very good knowledge of Spring 6 / Spring Boot 3

Good knowledge of event-driven architectures (Kafka or equivalent)

Good knowledge of API design (OpenAPI, REST, API Gateway integration)

Good knowledge of relational databases (PostgreSQL preferred)

Good knowledge of CI/CD and DevOps practices

Good knowledge of infrastructure-as-code concepts

Good knowledge of Agile methodologies (SCRUM)

Knowledge of open-source licensing concepts

Awareness of dependency management and SBOM practices

Experience with OSS compliance tools is an asset

Understanding of authentication and authorisation standards (OIDC/SAML)

Understanding of audit logging and data lifecycle management

• Ability to explain architecture to technical and non-technical audiences

• Strong analytical and problem-solving skills

• Experience working in multicultural environments

English

Java

Spring Boot

Kubernetes

microservices

PostgreSQL

Our client within the European Institutions is currently looking for a Java Developer to work on the architecture & design, defining and maintaining the target cloud architecture of EUSurvey 2.

Public

Java Developer

Daily rate: €440-€625

Location:

Luxembourg, Luxembourg

Apply before:

25/03/2026

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