Senior Java API Developer at Oxydata Software

Kuala Lumpur, Kuala Lumpur, Malaysia -

Full Time

Start Date

Immediate

Expiry Date

02 Aug, 26

Salary

0.0

Posted On

04 May, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Java, Spring Boot, RESTful APIs, Microservices, SQL, Hibernate, JPA, OAuth2, JWT, Git, Maven, Gradle, Docker, CI/CD, Multithreading, API Security

Industry

IT Services and IT Consulting

Description

Senior Java API Developer Job ID: 7XW55W65 Location: Kuala Lumpur Work Mode: Hybrid Employment type: Permanent Eligibility: No visa sponsorship available 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. Technical Requirements Must-Have 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. Good to Have Experience with Kafka or RabbitMQ. Cloud deployment experience (AWS, Azure, or GCP). Kubernetes knowledge. Experience with API documentation tools (Swagger / OpenAPI). Experience in fintech or high-transaction systems. Soft Skills Strong analytical and problem-solving skills. Ability to work independently and lead technical initiatives. Excellent communication and stakeholder management skills. Proactive mindset with ownership mentality.

Responsibilities

Design, develop, and maintain scalable RESTful APIs and microservices using Java and Spring Boot. Collaborate with cross-functional teams to architect secure, high-performance backend systems while mentoring junior developers.