We are tech transformation specialists, uniting human expertise with AI to create scalable tech solutions.
With over 8,000 CI&Ters; around the world, we’ve built partnerships with more than 1,000 clients during our 30 years of history. Artificial Intelligence is our reality.
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,
session management and Pub/Sub 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 hands‑on experience with gRPC
- 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)
- Knowledge of WebSockets or streaming APIs
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📌 Senior Java Developer, Colombia
🏢 Ci&T
📍 Colombia