Senior Java API Developer Role - Kuala Lumpur (Hybrid Model) - Only Malaysians
Unison Group · Kuala Lumpur, Federal Territory of Kuala Lumpur, Malaysia ·
- Seniority
- Senior
- Experience
- 5+ years
We are looking for a highly skilled Senior Java API Developer to design, develop, and optimize scalable backend services and RESTful APIs. You will play a key role in architecting secure, high-performance systems, mentoring junior developers, and driving engineering best practices across the team.
This role requires strong hands-on coding ability, architectural thinking, and experience building production-grade APIs in cloud or enterprise environments.
· Design, develop, and maintain scalable RESTful APIs and microservices using Java and Spring Boot.
· Architect secure, high-availability backend systems with performance optimization in mind.
· Implement clean, testable, and maintainable code following SOLID principles.
· Optimize application performance, troubleshoot bottlenecks, and resolve production issues.
· Collaborate with frontend developers, DevOps, QA, and product teams to deliver high-quality features.
· Participate in architecture discussions and technical design reviews.
· Implement API security standards (OAuth2, JWT, API Gateway policies).
· Ensure code quality through unit testing, integration testing, and code reviews.
· Mentor junior developers and promote engineering best practices.
· Contribute to CI/CD pipelines and DevOps improvements.
Requirements
· 5+ years of backend development experience.
· Strong expertise in Java (8/11/17+).
· Solid experience with Spring Boot, Spring MVC, Spring Security.
· Hands-on experience building RESTful APIs.
· Experience with microservices architecture.
· Strong knowledge of SQL (MySQL/PostgreSQL/Oracle) and ORM frameworks (Hibernate/JPA).
· Experience with API security (OAuth2, JWT).
· Familiarity with Git, Maven/Gradle.
· Experience working with Docker and CI/CD pipelines.
· Strong understanding of data structures, concurrency, and multithreading.
Benefits
Annual Leave (AL): Up to 21 days per year
Medical Leave (ML): 12 days per annum
Medical Coverage provided
Performance Bonus: 2 bonuses per year
Public Holiday Replacement Leave
Optical and Dental Coverage