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# Senior Software Engineer (Java Springboot) - Small European Company - English only!

- **Company:** Select HR
- **Location:**  (Machelen), Belgium
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Java (Programming Language), Spring Security, Agile Methodology, Confluence, JIRA, Command-Query Responsibility Segregation (Software Development), Relational Databases, DevOps, PostgreSQL, Network Architecture, RabbitMQ, Prometheus, Data Streaming, UML, Test-Driven Development (TDD), Grafana, Spring-boot, Archimate, Backend, Event Driven Architecture, Containerization, Gitlab-ci, Git Flow, Kubernetes, Information Technology, Atlassian Tools, Apache Kafka, Restful APIs, Atlassian Bamboo, Docker, Jenkins, Microservices
- **Published:** October 14, 2026
- **Apply:** https://www.select-jobs.be/Items/nl-BE/Jobs/ICT/senior-software-engineer-java-springboot---small-european-company----english-only/ApplyClosed-start

## About the Role

* Continuously develop technical skills through training, reading, knowledge sharing, and staying informed about emerging technologies.Profiel * 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).Organisatie- en afdelingomschrijving 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.

## Description

* 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.