SENIOR Java Backend Developer

LYNEER CORP (SINGAPORE) PTE. LTD

Singapore, SGonsitePosted Jun 23, 2026
Posting intelligenceActively listedReposted 25×, possible evergreen/ghost posting

Skills

springkafkareactjunitjavajavascript

About the role

Job Summary

Develop and optimize Java-based applications using Core Java, Spring Boot, and related technologies to deliver robust software solutions. Collaborate on database management, messaging systems, and web services to enhance application performance and reliability.

Responsibilities

Develop and maintain applications using Core Java 8+ and JUnit to ensure high-quality code and automated testing

Implement and optimize messaging solutions using Kafka and Java Messaging concepts (JMS, MQ, RTPM) for reliable data exchange

Design and build backend services with Spring Boot and apply Spring core concepts to support scalable applications

Manage project builds and dependencies using Maven to streamline development workflows

Write and optimize SQL queries, including joins, indexes, and triggers, to improve database performance and data retrieval

Utilize relational database concepts to design efficient data models and support application requirements

Develop and consume REST and SOAP web services to enable integration with external systems

Apply basic Linux shell scripting commands to automate routine tasks and support development environments

Use development tools such as IntelliJ, Git, and SonarQube/SonarLint to maintain code quality and version control

Preferred competencies and qualifications

Knowledge of JBOSS or other application servers to support deployment and runtime environments

Experience with Java Server Faces, JPA, and EJB to develop rich user interfaces and manage persistence

Ability to write and understand complex SQL queries for advanced data manipulation

Familiarity with Kafka for event streaming and messaging beyond core usage

Exposure to React JS for front-end development to complement backend services

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