Senior Java Developer 

Location: Brussels

Start Date: 01/06/2026

Duration: Until 31/12/2026

Language: English

Work Schedule: Full-time, Hybrid (2 days on-site per week)

Description:

As part of the Engineering Enablement, the Core Application Platform provides service-agnostic design and processing capabilities in a standardized way for applications, as well as an abstraction layer to facilitate microservice development and processing. The Core Application Platform handles low-level integration and operational aspects, allowing developers to focus on application business logic. Utilizing the Core Application Platform as a foundation ensures consistency across various areas, including development, infrastructure, integration, monitoring, testing, and supportability.

Responsibilities:

• Implement software components covering design, development, unit, and integration testing activities, with a strong focus on Java, Spring framework, and SpringBoot, as well as understanding of Apache Kafka.
• Enhance the SDK of the platform to enable application-level resiliency, availability, and integrity.
• Provide technical assistance to colleagues and assist in resolving problems reported by team members or qualification personnel to achieve timely and quality delivery. Address issues or problems reported by the integration and qualification teams.
• Analyze detailed system and application factors: input/output requirements, information flows, hardware/software requirements, performance, security, etc., with a focus on containers and Kubernetes orchestration for operational deployment and monitoring.
• Contribute to technical feasibility and propose systems solutions as needed.
• Develop and maintain technical documentation and, where appropriate, write system documentation and operating procedures.

Required Skills and Experience:

• Java, Spring, SpringBoot: 6 years of experience (Senior level)

• Kafka technology (with practice): 1-3 years of experience (Junior level)
• Team mindset and autonomy: 6 years of experience (Senior level)