Backend Engineer II: Scalable Java APIs for 50M Users

GTN_IDN PT Global Tiket Network; Indonesia; On-site; IDR 279,000,000 - 468,720,000; Full time

Job summary

GTN_IDN PT Global Tiket Network in Indonesia is seeking a backend developer to build and extend services using Java and Spring Boot, delivering robust APIs for our travel app ecosystem. You will contribute to scalable systems and help drive performance improvements across the backend stack.

You will maintain tests, refactor code, and collaborate across teams, while using CI/CD pipelines, Kafka or RabbitMQ, Redis, and Docker to ensure reliable operation and fast delivery of features.

Qualifications

• Bachelor's degree or equivalent in Computer Science or IT.
• 2+ years of backend development experience.
• Proficient with Java and Spring Boot.
• Experience with RDBMS or NoSQL databases, with demonstrated ability to analyze indexing strategies and design table schemas.
• Experience with Redis and Memcached is a plus.
• Experience with Elastic Search.
• Experience with CI/CD, TDD, refactor/rewrite system.
• Experience with event‑driven architecture such as Kafka or RabbitMQ.
• Experience with Git Flow.
• Experience with Kubernetes is a plus.
• Proficient in log analysis and debugging.
• Experience with pair programming is a plus.
• Experience with Linux syntax, Docker is a plus.
• Good sense of prioritization and product ownership.
• Strong critical thinking, fast learner, excellent communication skills, and collaborative mindset – comfortable working across cross‑functional teams and communicating technical tradeoffs.
• Well‑motivated, responsible for deadlines, and able to work under pressure.
• Comfortable leveraging AI tools for coding, debugging, and documentation to boost engineering velocity.

Responsibilities

• Build and extend backend code based on SOLID principles and clean code.
• Build APIs that serve our frontend apps – benchmark and improve performance.
• Maintain and extend our test suite.
• Refactor and improve existing code to incorporate better patterns.
• Document and write about the work.
• Create unit tests and implement self-tests to ensure the code runs well.
• Assist the technical lead in reviewing and following up on code that has been developed.

Education

Bachelor’s degree or equivalent in Computer Science or Information Technology

Tools

Java

Spring Boot

Redis

Memcached

Elastic Search

CI/CD

TDD

Kafka

RabbitMQ

Git Flow

Kubernetes

Docker

Linux

Job description

GTN_IDN PT Global Tiket Network in Indonesia is seeking a backend developer to build and extend services using Java and Spring Boot, delivering robust APIs for our travel app ecosystem. You will contribute to scalable systems and help drive performance improvements across the backend stack.

You will maintain tests, refactor code, and collaborate across teams, while using CI/CD pipelines, Kafka or RabbitMQ, Redis, and Docker to ensure reliable operation and fast delivery of features.