[Job - 28140] Senior Java Developer, Brazil

We are looking for a Senior Java Developer to join our team and contribute to the development and refactoring of a complex software solution that manages physical devices in retail stores, such as card machines and barcode readers. This role will require working closely with a multicultural team spread across Brazil, Colombia, and India, with all communication conducted in English.

Key Responsibilities:

• Design, build, and maintain backend services using Java 21, Spring Boot, and Hawkbit.
• Implement and evolve REST and gRPC APIs, ensuring best practices and versioning standards.
• Ensure service reliability through unit and integration testing, troubleshooting, and root-cause analysis.
• Work with PostgreSQL for schema design and performance tuning, integrating with caching layers like Redis.
• Build and debug containerized services using Docker and deploy them on Kubernetes (GKE).
• Apply security fundamentals, including OAuth2/OIDC, JWT validation, and secure coding practices.
• Collaborate with cross-functional teams, ensuring clear communication and ownership of deliverables.
• Contribute to CI/CD workflows (Tekton/Jenkins, ArgoCD) following GitOps principles.
• Participate in technical discussions, design reviews, and mentor team members as needed.

Required Skills and Qualifications:

• Strong experience with Java 21 and Spring Boot in production systems.
• Solid understanding of REST APIs and familiarity with gRPC concepts.
• Hands-on experience with OAuth2/OIDC, JWT, and backend security fundamentals.
• Proficiency with PostgreSQL and JPA/Hibernate.
• Practical experience with Docker and Kubernetes (deployments, debugging).
• Ability to troubleshoot distributed systems and diagnose performance issues.
• Effective communication skills and resilience in fast-paced, multicultural teams.
• Advanced English proficiency.

Soft Skills:

• Proactive ownership of tasks with a mindset for continuous improvement.
• Strong communication skills across technical and non-technical audiences.
• Comfortable with context switching and balancing priorities.
• Collaborative team player who values shared success.
• Ability to adapt to ambiguity and shifting requirements.

Nice-to-Have Skills:

• Experience with Kafka or other event-driven technologies.
• Proficiency in NoSQL databases.
• Familiarity with GitOps (ArgoCD) and Tekton pipelines.
• Exposure to GCP services (GKE, IAM, Cloud Logging/Monitoring).
• Basic understanding of policy-based access control (OPA).
• Knowledge of WebSockets or streaming APIs.
• Background in prototyping or integrating AI-driven automation.

If you are a seasoned backend developer looking to take on complex challenges in a dynamic environment, we invite you to apply and become a part of our diverse team!

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