Java Backend Developer

IDC TECHNOLOGIES (SINGAPORE) PTE. LTD.; Singapore; On-site; SGD 90,000 - 140,000; Full time

Job summary

IDC TECHNOLOGIES (SINGAPORE) PTE. LTD. is seeking a skilled Java backend developer to design and optimize applications using Core Java 8+, Spring Boot, and related technologies.

You will collaborate on messaging systems, databases, and web services to deliver scalable software. Responsibilities include implementing Kafka-based messaging, building REST and SOAP services, deploying with Maven, and tuning SQL for performance.

Qualifications

• Bachelor’s degree in Computer Science or a related field.
• Strong proficiency in Java 8+ and Spring Boot.
• Experience with messaging, Kafka, JMS, and MQ.
• Experience with relational databases and SQL optimization.
• Familiarity with CI/CD, Git, and code quality tools.

Responsibilities

• Develop and maintain applications using Core Java 8+ and JUnit.
• Implement and optimize messaging solutions using Kafka, JMS, and MQ.
• Design and build REST and SOAP web services.
• Apply Spring Boot to develop scalable backend services.
• Manage build processes using Maven.
• Write and optimize SQL queries to improve database performance.
• Use Linux shell scripting to automate tasks.
• Use IntelliJ, Git, and SonarQube to maintain code quality.

Skills

Core Java 8+

Spring Boot

JUnit

Kafka

REST API design

SQL

Linux shell

Git

IntelliJ

SonarQube

Tools

Maven

JBoss

React JS

JPA

EJB

SOAP

MQ

Job description

Job Summary

Develop and optimize Java-based applications using Core Java 8+, Spring Boot, and related technologies. Collaborate on messaging systems, database management, and web services to deliver efficient, scalable software solutions.

Responsibilities

• Develop and maintain applications using Core Java 8+ and JUnit to ensure robust, tested code
• Implement and optimize messaging solutions using Kafka, Java Messaging Service (JMS), and MQ for reliable data exchange
• Design and build REST and SOAP web services to support integration and interoperability
• Apply Spring Boot and Spring core concepts to develop scalable backend services
• Manage build processes using Maven for consistent and efficient project compilation
• Write and optimize SQL queries, including joins, indexes, and triggers, to improve database performance, RTPM
• Utilize relational database concepts to design and maintain data structures
• Perform SQL query optimization to enhance application responsiveness
• Use Linux shell scripting commands to automate routine tasks and support development workflows
• Employ development tools such as IntelliJ, Git, and SonarQube/SonarLint to maintain code quality and version control

Preferred competencies and qualifications

• Operate application servers such as JBOSS to deploy and manage Java applications
• Develop user interfaces using Java Server Faces (JSF) and manage persistence with JPA and EJB
• Write and interpret complex SQL queries to support advanced data operations
• Work with Kafka for event streaming and messaging
• Develop front-end components using React JS to enhance user experience