Senior Software Engineer (Java SpringBoot) - ref. 165934 (878033279)
Our client is a leading European company specializing in internet infrastructure, located in the Brussels area. Join a dynamic, multicultural team at a tech-driven company with a human-scale approach.
We are seeking a Senior Software Engineer (Java / Spring Boot) to strengthen their development team and contribute to the architecture and evolution of mission-critical backend services. As a senior team member, you will contribute to shaping the technical foundation of Europe's digital future.
Key responsibilities
- Design the backend architecture and define how components such as user interfaces, internal tools, and external applications interact with the backend, with a focus on reliability, resilience, and recovery.
- Build services following MicroServices architecture principles and align with the Twelve-Factor App methodology for scalable, maintainable applications.
- Develop, optimize and maintain high-quality backend systems using Java, Spring Boot, and modern development practices.
- Contribute to solution architecture, applying patterns such as event-driven design, Saga, CQRS, and domain-driven design.
- Design secure, scalable APIs and support data model evolution.
- Model and manage data using relational databases, especially PostgreSQL, ensuring consistency, performance, and maintainability of the persistence layer.
- Actively participate in Agile ceremonies such as planning, estimation, reviews, and retrospectives.
- Lead technical design discussions and promote clean code, test-driven development, and automation.
- Contribute to system modeling activities using appropriate standards (e.g. UML, ArchiMate) to describe services, integrations, and data flows.
- Collaborate with product owners, business analysts, the Service Delivery Manager, and the Enterprise Architect for planning activities and refining functional and non-functional requirements.
- Work closely with DevOps and Security teams to ensure compliance with best practices and relevant regulations (e.g. NIS2, GDPR).
- Provide mentorship to the team and share architectural and engineering expertise.
- Continuously develop technical skills through training, reading, knowledge sharing, and staying informed about emerging technologies.
Profile
- Degree in Computer Science, Information Technology, Engineering, or a related field.
- 7+ years of backend development experience with Java and Spring ecosystem.
- Proven experience in solution architecture.
- Experience delivering features in agile environments.
Technical proficiencies:
- Strong knowledge of Java, Spring Boot, Spring Security, and RESTful API development.
- Experience with event-based architecture, Kafka, RabbitMQ, and eventual consistency patterns.
- Proficiency in RDBMS, especially PostgreSQL, and ORM tools.
- Familiarity with CI/CD pipelines, GIT workflows, and tools such as Bamboo, Jenkins, GitLab CI.
- Testing mindset: solid experience in unit, integration, and contract testing.
- Experience with containerization tools like Docker; knowledge of Kubernetes is an asset.
- Familiarity with system modeling practices, such as UML, ArchiMate, or equivalent standards to support architectural design and documentation.
- Experience with Atlassian tool stack, especially Jira for backlog management and Confluence for technical and project documentation.
- Exposure to observability tools such as Prometheus, Grafana, is a plus.
Soft skills:
- Excellent communication and collaboration skills.
- Strategic thinker with strong problem-solving and analytical abilities.
- Able to mentor others and promote a culture of continuous improvement.
- Fluent in English (spoken and written).
Offer
- A dynamic and international work environment.
- A competitive compensation package that includes a competitive salary, a company car, meal vouchers, a comprehensive group and health insurance plan and additional holidays.
- Healthy work-life balance including hybrid work.
- Opportunities for growth and development.
- A role that supports a high-impact, high-visibility European digital initiative.
