Job Details

Senior Full Stack Developer

We are seeking an experienced Senior Full Stack Developer to join an international engineering team building high-performance, data-driven applications. The ideal professional combines a solid backend background in Java (Quarkus/Spring) with hands-on experience in React and TypeScript, and thrives in a collaborative, DevOps-oriented environment.

Technical Requirements and Knowledge:

• Backend: Advanced experience with Java, Maven, and Quarkus or Spring frameworks for enterprise-level development.
• Frontend: Strong knowledge of React (TypeScript), modern JavaScript (ES6+), Ant Design, Webpack, and testing frameworks such as Jest and React Testing Library.
• Databases: Proven ability to design and optimize MongoDB and PostgreSQL schemas, queries, and indexing strategies for scalable environments.
• Architecture: Skilled in microservices design, Kafka-based event communication, and integration with ELK monitoring stacks.
• DevOps: Experience with Docker, Kubernetes, Jenkins, SonarQube, Nexus, and CI/CD pipelines.
• Security & Authentication: Knowledge of Role-Based Access Control (RBAC), JWT, and secure coding practices.
• Cloud & Storage: Familiarity with bucket-based storage systems (e.g., MinIO) and containerized deployments.
• Performance Optimization: Competence in profiling and resolving performance issues at both code and infrastructure level.
• Version Control: Proficient in Git (Bitbucket preferred).

Key Responsibilities:

• Design, develop, and maintain robust full-stack applications ensuring performance, scalability, and maintainability.
• Build and enhance microservices and APIs using event-driven and real-time architectures.
• Deliver intuitive, responsive user interfaces with React and ensure quality through automated testing.
• Apply DevOps best practices to streamline delivery, automate builds, and maintain secure deployments.
• Diagnose and improve application and database performance through systematic analysis.
• Ensure compliance with security and data protection standards throughout the development process.
• Collaborate closely with architects, product owners, and QA to translate business needs into technical solutions.
• Mentor and support junior developers, fostering collaboration and continuous learning within the team.
• Take ownership of deliverables, from analysis and design to release and follow-up, maintaining accountability for results.

Hiring Details:

• Seniority: Senior (57+ years of relevant experience).
• Language: English level B2/C1 (mandatory).
• Work setup: 100% remote. Travel: Occasional travel to Brussels may be required.
• Eligibility: Open to EU citizens or professionals residing in the EU with a valid work permit.
• Engagement options: Freelance or Spanish employment contract, depending on the candidate's preference and location.