Senior Java Microservices & Frontend - Spring WebFlux

APAR TECHNOLOGIES PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

APAR TECHNOLOGIES PTE. LTD. is seeking an experienced Java developer to design, build and integrate scalable reactive microservices and REST APIs using Java 8/11/17+, Spring Boot and Spring WebFlux. The role includes frontend work with Angular/TypeScript and collaboration on architecture and Agile ceremonies.

You will write unit and integration tests with JUnit/Mockito, work with MongoDB and other data sources, and contribute to CI/CD and security best practices across production systems.

Qualifications

• 5+ years of hands-on Java development experience.
• Experience with Java 8, 11 or 17+.
• Proven experience with Spring Boot and Spring WebFlux.
• Strong understanding of reactive programming and Project Reactor (Mono/Flux).
• Experience developing microservices and REST APIs.
• Understanding of asynchronous and non-blocking architectures.

Responsibilities

• Design, develop and integrate scalable reactive microservices and REST APIs using Java, Spring Boot, Spring WebFlux and Project Reactor.
• Build responsive frontend applications using Angular, TypeScript, JavaScript, HTML5 and CSS3.
• Integrate applications with databases, APIs, messaging systems and enterprise platforms.
• Develop reusable, secure and testable components using asynchronous and event-driven patterns where appropriate.
• Write and maintain unit and integration tests using JUnit, Mockito and related testing frameworks.
• Participate in architecture discussions, technical design sessions, code reviews and Agile/Scrum ceremonies.
• Troubleshoot application, performance and production issues.
• Apply best practices for software engineering, CI/CD, application security, logging and performance optimization.

Skills

Java

Spring Boot

Spring WebFlux

Reactive programming

REST APIs

Microservices

Tools

JUnit/Mockito

MongoDB

CI/CD

Job description

APAR TECHNOLOGIES PTE. LTD. is seeking an experienced Java developer to design, build and integrate scalable reactive microservices and REST APIs using Java 8/11/17+, Spring Boot and Spring WebFlux. The role includes frontend work with Angular/TypeScript and collaboration on architecture and Agile ceremonies.

You will write unit and integration tests with JUnit/Mockito, work with MongoDB and other data sources, and contribute to CI/CD and security best practices across production systems.