Backend Engineer

🚀 We’re Hiring: Backend Engineer

📍 Location: [Tangerang Kota / Full WFO] 💼 Employment Type: [Contract] Note : Bisa join ASAP atas 2 weeks notice.

📌 Requirements:

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 4+ years of experience in backend development with Java & Spring Boot
• Strong mastery of Java 21+ and Spring Boot 4
• Strong experience with PostgreSQL, including schema design, query optimization, indexing, and connection pooling (PgBouncer, HikariCP).
• Production experience with Redis and Kafka.
• Experience with WebSocket or other long-lived-connection systems at scale.
• Strong understanding of concurrency, idempotency, distributed locking, and consistency trade-offs in microservices.
• Experience with Spring Security, OAuth2/JWT, RBAC or ABAC.
• Experience with Docker, Kubernetes/ECS, CI/CD, AWS or GCP.
• Experience with JUnit, Testcontainers, and integration testing.
• Ability to troubleshoot production issues such as memory leaks, slow queries, thread contention, and slow downstream dependencies.
• Familiar with Git workflows, including branching, PR reviews, and conflict resolution.
• Proven experience delivering production-grade and scalable applications.