Job role: Senior Java Developer.
Location: Brussels (On site).
Languages required: English (C1) (Mandatory).
Minimum experience required: 14 years.
Overview
Senior Java Developer role based in Brussels with on-site work. English required at C1 level (mandatory). Minimum experience: 14 years.
Responsibilities
* Software Development: Design and develop high-performance, scalable applications using Java and Quarkus, ensuring that code is maintainable, efficient, and aligned with best practices.
* Database Optimization: Architect and optimize MongoDB and PostgreSQL schemas, queries, and indexing strategies to achieve high performance and scalability.
* Microservices & Messaging: Develop and scale microservices using Kafka for messaging, integrating with the ELK stack for logging, monitoring, and troubleshooting.
* Performance Engineering: Identify, analyze, and optimize system performance bottlenecks in both code and infrastructure. Ensure optimal performance through rigorous profiling, testing, and fine-tuning.
* DevOps: Expertise with DevOps and CI/CD principles, use pipelines with Jenkins, SonarQube, and Nexus, focusing on security, automation, and deployment efficiency.
* Security: Implement secure coding practices throughout the development lifecycle.
* Mentorship: Provide guidance to junior developers, sharing knowledge and fostering a culture of continuous improvement.
* Stakeholder Interaction: Work closely with product owners, architects, and other stakeholders to understand requirements, provide technical insights, and deliver effective solutions.
* End-to-End Ownership: Take full ownership of tasks from analysis through design to implementation and deployment. Be proactive in driving solutions independently, ensuring high-quality and timely delivery.
Qualifications
* Proven experience with Java, Maven and Quarkus/Spring in building large-scale applications.
* Strong experience with Git, ideally Bitbucket.
* Strong background in MongoDB and PostgreSQL, with a focus on optimizing data access and ensuring scalability.
* Expertise in Kafka for building event-driven systems and integrating with the ELK stack for monitoring and troubleshooting.
* Deep understanding of performance optimization and profiling techniques for both code and database layers.
* Strong experience with Docker, Kubernetes, Jenkins, SonarQube, and Nexus for DevOps and CI/CD pipelines.
* Ability to implement security best practices, including secure coding, vulnerability management, and compliance.
* Excellent soft skills, including the ability to analyze requirements, communicate effectively with cross-functional teams, and take initiative to drive tasks to completion.
* Solid experience in Agile methodologies with a focus on delivering high-quality software in iterative cycles.
* A proactive and independent mindset, with the ability to work with minimal supervision and take full responsibility for end-to-end delivery.
* Exposure to performance profiling tools and security tools (e.g., Snyk, OWASP).
Location
* Brussels (On site).
Language
* English (C1).
Rate
* 475-495€/day.
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