Senior Backend Engineer (Java / Spring Boot)

📍 Porto or Braga (On-site once every 2 weeks) | Mostly Remote

🕒 Full-time Freelance | 12 months

We are hiring a Senior Backend Engineer for a long-term freelance project via Shakers, collaborating with an international IT consulting group specialized in complex insurance systems.

You will play a key role in evolving critical backend systems built on a modern microservices architecture.

Responsibilities

• Design and develop microservices using Java 17+ and Spring Boot
• Build and maintain REST APIs and third-party integrations
• Work within distributed and event-driven architectures
• Ensure performance, scalability, and reliability
• Contribute to architectural decisions and technical evolution
• Support CI/CD pipelines and production monitoring
• Mentor junior engineers and lead backend services end-to-end

Requirements

• 7+ years of backend development experience
• Strong expertise in Java 17+ and Spring Boot
• Solid experience building REST APIs
• Strong knowledge of SQL databases (PostgreSQL/Oracle) and JPA/Hibernate
• Experience with Docker and CI/CD pipelines
• Experience in distributed and event-driven architectures
• Fluent Portuguese and English

Nice to have: Cloud (AWS/Azure/GCP), JUnit/Mockito, microservices security.

📩 Please apply here