Senior Java API Developer

Zohorecruit; Kuala Lumpur; On-site; MYR 89,000 - 112,000; Full time

Job summary

Flintex Consulting Pte Ltd in Kuala Lumpur, Malaysia, seeks a Senior Java API Developer to design, develop, and optimize scalable backend services and RESTful APIs. You will architect secure, high-performance systems, mentor junior developers, and drive engineering best practices across the team.

The role requires hands-on coding, architectural thinking, and production-grade API experience in cloud or enterprise environments. Join a dynamic team delivering robust backend solutions.

Qualifications

• 5+ years of backend development experience.
• Strong expertise in Java (8/11/17+).
• Solid experience with Spring Boot, Spring MVC, Spring Security.
• Experience with microservices architecture.
• Strong knowledge of SQL and ORM frameworks (Hibernate/JPA).
• Experience with API security (OAuth2, JWT).
• Familiarity with Git, Maven/Gradle.
• Experience with Docker and CI/CD pipelines.
• Strong understanding of data structures, concurrency, and multithreading.

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.

Skills

Analytical skills

Problem solving

Independent work

Stakeholder management

Communication

Tools

Java

Spring Boot

Spring MVC

Spring Security

Microservices

SQL

Hibernate/JPA

OAuth2

JWT

Git

Maven/Gradle

Docker

CI/CD

OpenAPI/Swagger

Job description

Full time | Flintex Consulting Pte Ltd | Malaysia

Posted On 28/09/2026

Job Information

Work Experience 5+ years

Technology

MYR 8000 - MYR 10000

City Kuala Lumpur

State/Province Wilayah Persekutuan Kuala Lumpur

50000

Job Description

Position Summary

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

Requirements

• 5+ years of backend development experience.
• Strong expertise in Java (8/11/17+).
• Solid experience with Spring Boot, Spring MVC, Spring Security.
• 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).
• 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