Senior Java Backend Engineer & Technical Lead

SEIDOR; Brussel; Sur place; EUR 70 000 - 100 000; Plein temps

Résumé du poste

SEIDOR in Brussels is seeking a Senior Java Developer to design, build and test back-end components using the Spring ecosystem. You will implement REST and event-driven APIs, ensure robust security with OAuth 2.0 / OIDC / SAML, and contribute to CI/CD pipelines in a collaborative environment.

You will work across code reviews, pair programming, documentation, and deployment support, while mentoring junior developers and making technical design decisions to optimise performance and security.

Qualifications

• 4 years of experience developing Java back-end applications.
• 8 years of Spring ecosystem experience (Spring Boot, Spring Security, Spring Data).
• 8 years designing REST APIs and event-driven integrations.
• 6 years with relational databases and ORM (Hibernate/JPA).
• 5 years DevSecOps tooling, incl. Git, Jira/Confluence, and CI/CD pipelines.
• 3 years as technical lead of a back-end team with design decisions and security optimization.
• English: level C1.
• Bachelor's degree (EQF level 6) in Computer Science or equivalent.

Responsabilités

• Design, develop and unit-test back-end components using the Spring ecosystem
• Implement REST and event-driven APIs and business logic
• Implement persistence layers and integrate with messaging systems
• Implement authentication and authorisation (OAuth 2.0 / OIDC / SAML)
• Contribute source code and configuration to the customer's CI/CD pipeline
• Participate in code reviews and pair programming
• Produce and maintain API documentation
• Identify, debug and fix defects; support deployment and migration activities

Connaissances

Java back-end

Spring ecosystem

REST API design

Event-driven integration

DevSecOps tooling

Technical leadership

Code reviews

API documentation

OAuth 2.0 / OIDC / SAML

Security optimisation

Git & CI/CD

Formation

Bachelor's degree (CS)

Master's degree (CS)

Outils

Kafka

RabbitMQ

Docker

Kubernetes

Jenkins

Bamboo

Jira

Confluence

Description du poste

SEIDOR in Brussels is seeking a Senior Java Developer to design, build and test back-end components using the Spring ecosystem. You will implement REST and event-driven APIs, ensure robust security with OAuth 2.0 / OIDC / SAML, and contribute to CI/CD pipelines in a collaborative environment.

You will work across code reviews, pair programming, documentation, and deployment support, while mentoring junior developers and making technical design decisions to optimise performance and security.