[Hiring] Senior Java Developer @CI&T

Role Description

We are looking for a Senior Java Developer to help design, build, and maintain scalable, high-quality web applications. You will work across the entire stack, from modern frontend interfaces to robust backend services, collaborating closely with product, design, and other engineering teams.

• Design, build, and maintain backend services using Java 17/21 and Spring Boot.
• Implement and evolve REST and gRPC APIs following best practices and versioning standards.
• Ensure service reliability through unit/integration tests, troubleshooting, and root-cause analysis.
• Work with PostgreSQL (schema design, performance tuning) and integrate with caching layers (Redis).
• Build and debug containerized services using Docker and deploy them on Kubernetes (GKE).
• Apply security fundamentals: OAuth2/OIDC, JWT validation, RBAC, and secure coding practices.
• Collaborate with cross-functional teams, ensuring clear communication and ownership of deliverables.
• Contribute to CI/CD workflows (Tekton/Jenkins, ArgoCD) and follow GitOps principles.
• Participate in technical discussions, design reviews, and mentor team members when needed.

Qualifications

• Strong experience with Java (17 or 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, ConfigMaps/Secrets).
• Ability to troubleshoot distributed systems, analyze logs, and diagnose performance issues.
• Effective communication, transparency, and resilience working in fast-paced, multicultural teams.
• Advanced English.

Requirements

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

Benefits

• Health and dental insurance
• Meal and food allowance
• Childcare assistance
• Extended paternity leave
• Partnership with gyms and health and wellness professionals via Wellhub (Gympass) TotalPass
• Profit Sharing and Results Participation (PLR)
• Life insurance
• Continuous learning platform (CI&T University)
• Discount club
• Free online platform dedicated to physical, mental, and overall well-being
• Pregnancy and responsible parenting course
• Partnerships with online learning platforms
• Language learning platform
• And many more!

More details about our benefits here: https://ciandt.com/br/pt-br/carreiras