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Senior Java API Developer Role - Kuala Lumpur (Hybrid Model) - Only Malaysians

Unison Group
CompanyUnison Group
CategoryEngineering
LocationKuala Lumpur
RemoteHybrid (inferred)
EmploymentFull-time
LevelSenior
SalaryNot stated by the employer
Posted6 May 2026
Last verified4 Aug 2026
SourceEmployer ATS (workable)
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Description
Skill: Java API Developer Nationality Requirement: Malaysian Citizens Only Role Overview 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. Key Responsibilities ·       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