Back End Developer

Nusantech; Kota Bandung; On-site; IDR 300,000,000 - 540,000,000; Full time

Job summary

Nusantech is seeking a Backend Developer (Java Spring Boot) to join its growing engineering team in Bandung. You will design, build, and maintain scalable backend services and APIs powering our applications.

As a senior member, you will contribute to system design, code quality, and mentoring junior developers. Responsibilities include building robust APIs, adopting microservices architecture, and collaborating with cross-functional teams.

Qualifications

• 5+ years of backend development in Java/J2EE
• Proficient in Spring Boot and Spring ecosystem (Security, Data, MVC)
• Experience with relational databases (PostgreSQL/MySQL) and Hibernate
• RESTful API design, versioning, and microservices
• Experience with Git and CI/CD pipelines (Jenkins, GitLab CI, or GitHub Actions)
• Strong knowledge of clean architecture and design patterns
• Experience with Docker and Kubernetes
• Unit testing using JUnit/Mockito
• Familiarity with cloud services (AWS/GCP/Azure) is a plus
• Strong analytical and debugging skills
• Experience with monitoring tools (Prometheus, Grafana, ELK)

Responsibilities

• Design and implement robust, scalable backend services using Java Spring Boot
• Build and maintain RESTful APIs and microservices architectures
• Collaborate with frontend, product, and QA teams to deliver features
• Optimize database queries and application performance
• Participate in code reviews, planning, and architecture discussions
• Implement unit and integration tests to ensure code quality
• Troubleshoot production issues and implement long-term fixes
• Document code, APIs, and system flows

Skills

Java

Spring Boot

RESTful APIs

Microservices

CI/CD

Docker

Kubernetes

JUnit/Mockito

Cloud basics (AWS/GCP/Azure)

Debugging/Analytical skills

Tools

PostgreSQL

MySQL

Hibernate

Git

Jenkins/GitLab CI/GitHub Actions

Job description

We are seeking a Backend Developer with expertise in Java Spring Boot to join our growing engineering team. You will be responsible for designing, building, and maintaining scalable backend services and APIs that power our applications. As a senior member, you will play a key role in system design, code quality, and mentoring junior developers.

Responsibilities:

• Design and develop robust, secure, and scalable backend services using Java (Spring Boot)
• Build and maintain RESTful APIs and microservices architecture
• Collaborate with frontend developers, product managers, and QA to deliver high-quality features
• Optimize application performance, database queries, and system reliability
• Participate in code reviews, technical planning, and architecture discussions
• Implement unit and integration tests to ensure code quality
• Troubleshoot production issues and implement long-term fixes
• Maintain proper documentation of code, APIs, and system flows

Requirements:

• Strong proficiency in Java with at least 5 years of experience in backend development
• In-depth knowledge of Spring Boot and Spring ecosystem (Security, Data, MVC)
• Experience with relational databases (e.g., PostgreSQL, MySQL) and ORM frameworks like Hibernate
• Familiarity with RESTful API design principles and API versioning
• Experience with Git and CI/CD tools such as Jenkins, GitLab CI, or GitHub Actions
• Strong understanding of clean architecture, design patterns, and best practices
• Experience on containerization (Docker) and orchestration tools (Kubernetes)
• Experience with unit testing frameworks (JUnit, Mockito)
• Knowledge of cloud services (AWS, GCP, or Azure) is a plus
• Strong analytical and debugging skills
• Experience with monitoring tools like Prometheus, Grafana, or ELK Stack

Nice to Have:

• Experience with message brokers (RabbitMQ, Kafka)
• Knowledge of NoSQL databases (MongoDB, Redis)