Senior Java Developer

hi5 elite pte. ltd.; Singapore; On-site; SGD 60,000 - 100,000; Full time

Job summary

hi5 elite pte. ltd. is seeking a Java developer with 3-6 years of experience to design and implement Core Java/Spring Boot applications, microservices, and REST APIs. The role emphasizes strong SQL skills, Kafka messaging, and API security knowledge.

You'll work in a collaborative team, solve complex problems, and contribute to robust, scalable backend services in a fast-paced environment.

Qualifications

• 3-6 years of experience in Java development.
• Strong knowledge of Core Java and Spring Boot.
• Experience building Microservices and REST APIs.
• Proficient in SQL query writing and optimization.
• Familiar with Kafka messaging.
• Understanding of API security and error handling.
• Knowledge of JWT/OAuth 2.0 is a plus.
• Good problem-solving and debugging skills.
• Excellent communication and teamwork.

Skills

Java development

REST APIs

Problem solving

Teamwork

Communication

Tools

Core Java

Spring Boot

Hibernate/JPA

Kafka

JWT/OAuth 2.0

Job description

Technical Skills

• Java (Core Java, Spring Boot, Microservices), Hibernate
• SQL (query writing, optimization, performance tuning)
• Kafka (understanding of messaging and transactions)
• Exception handling and API security (authentication and authorization)

Job Requirements

• 3-6 years of experience in Java development.
• Good knowledge of Core Java and Spring Boot.
• Experience in developing Microservices and REST APIs.
• Knowledge of Hibernate/JPA.
• Good SQL skills, including writing and optimizing queries.
• Basic understanding of Kafka and messaging.
• Good knowledge of exception handling and error management.
• Understanding of API security, authentication, and authorization.
• Knowledge of JWT/OAuth 2.0 is an added advantage.
• Good problem-solving and debugging skills.
• Good communication and teamwork skills.