Senior Full Stack Developer (Remote from EU)

We are seeking an experienced Senior Full Stack Developer to join an international engineering team building high-performance, data-driven applications., 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.

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)., Hiring Details Seniority: Senior (5-7+ 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.