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

Unison Group · Kuala Lumpur, Federal Territory of Kuala Lumpur, Malaysia

Software DevelopmentSenior LevelExternal listingfull-time13 days ago

About The Role

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

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