Java Engineer

RAPSYS TECHNOLOGIES PTE LTD; Kuala Lumpur; On-site; MYR 120,000 - 180,000; Full time

Job summary

RAPSYS TECHNOLOGIES PTE LTD in Kuala Lumpur is seeking a skilled Java Engineer with 3+ years of experience to support and develop payment applications. You will work on Java Spring Boot projects, ensure system health, and troubleshoot complex production issues in a regulated financial environment.

You will collaborate with infrastructure and development teams, assist with deployments, document procedures, and contribute to security and compliance practices while delivering high-quality solutions.

Qualifications

• 3+ years of experience in Java application development, maintenance or production support.
• Strong knowledge of Java and Spring Boot.
• Experience with Oracle Database and SQL troubleshooting.
• Unix/Linux experience and command-line proficiency.

Responsibilities

• Provide Level 3 maintenance and production support for payment applications.
• Monitor performance and respond to production incidents within SLAs.
• Investigate and troubleshoot application and system issues with senior engineers.
• Perform root cause analysis for recurring issues and implement fixes.
• Assist with deployments, releases, and post-deployment validation.

Skills

Java

Spring Boot

SQL

Unix/Linux

Incident management

Communication

Teamwork

Tools

Oracle Database

JBoss

Apache Web Server

Kafka

JWT

Job description

We are looking for a skilled and passionate Java Engineer to join our team in Kuala Lumpur. If you have at least 3 years of experience and thrive in an office environment, this is your opportunity to build impactful solutions with us.What You’ll Do: The successful candidate will support business-critical payment systems by monitoring application health, troubleshooting production issues, resolving incidents, and assisting with application enhancements. This role offers an excellent opportunity to gain hands‑on experience with enterprise payment platforms, Java microservices, and financial services technologies.Key Responsibilities: Provide Level 3 application maintenance and production support for payment applications. Monitor application performance and respond to production incidents within defined SLAs. Investigate, troubleshoot, and resolve application and system issues in collaboration with senior engineers. Perform root cause analysis for recurring production issues and assist in implementing permanent fixes. Support application deployments, releases, and post-deployment validation activities. Develop and maintain Java Spring Boot applications, bug fixes, and minor enhancements. Create and maintain technical documentation, operational procedures, and knowledge base articles. Work closely with business users, infrastructure teams, and developers to ensure smooth application operations. Support batch jobs, file processing, and data validation activities. Participate in on‑call support and scheduled maintenance activities as required. Ensure adherence to security, compliance, and operational standards in a regulated financial environment.Required Skills: 3 years of experience in Java application development, maintenance, or production support. Strong knowledge of Java and Spring Boot. Experience working with Oracle Database 12c/19c, including SQL queries and troubleshooting. Hands‑on experience with Unix/Linux operating systems and command‑line tools. Basic understanding of application support processes, incident management, and troubleshooting. Good analytical and problem‑solving skills. Strong communication and teamwork abilities. Willingness to learn enterprise payment systems and production support best practices.Nice‑to‑Have Skills: Exposure to Client Entitlement Workflow (CEW) and Payment Data Repository (PDR) or similar in‑house payment solutions. Experience with JBoss Application Server and Apache Web Server. Familiarity with modern Java microservices technologies such as Spring Boot, Kafka, and JWT. Experience implementing file conversion processes (e.g., TXT to XML, CSV to XML). Knowledge of Shell Scripting for automation and operational support. Exposure to highly secure environments such as banking or financial services. Understanding of security concepts including encryption, audit controls, two‑factor authentication (2FA), and multi‑factor authentication (MFA).