Senior Application Support Engineer – Java, AWS, FinTech

Hong Kong Unison Limited; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

Hong Kong Unison Limited in Singapore seeks an Application Support Engineer to provide 24x7 operational support, monitor alerts and manage incidents, and participate in deployments. You will handle production queries from MAS, banks, auditors and other BCs users.

The role requires strong SDLC knowledge, analytical skills, and hands-on experience with Java, Kotlin, databases, APIs, Linux, and cloud services. Collaboration and security awareness are essential.

Qualifications

• Good understanding of Software Development Life Cycle (SDLC).
• Strong analytical and problem-solving skills.
• Clear written and oral communication.
• Ability to work under pressure and meet SLAs.
• Motivated, self-driven learner, able to work independently and in a team.
• Interest in reading code to understand system behavior.
• Solid troubleshooting skills with adaptable strategies.
• Hands-on experience: Java, Kotlin, J2EE/JEE, MySQL, Oracle, SQL/PLSQL, APIs (RESTful/SOAP) and/or XML.
• Linux OS (RHEL) and Unix shell scripting understanding.
• Experience with AWS services (CloudWatch, KMS, S3, RDS, EKS, EC2, ALB, API Gateway).
• Knowledge of microservices, containers, Kubernetes and Docker.
• Cloud-based architecture and DevSecOps are a plus.
• Experience with Spring 4/5/6, Struts 2.x, Spring Boot/Batch/Integration is a plus.
• Domain knowledge of Financial Clearing and ISO20022 is a plus.

Responsibilities

• Provide 24x7 day-to-day application support and incident management.
• Monitor environment stability and respond to alerts.
• Participate in application deployments and maintenance.
• Address production-related queries from MAS, banks, auditors and BCs users.

Skills

SDLC

Analytical skills

Communication

Under pressure

Fast learner

Teamwork

Codebase reading

Troubleshooting

Java

Kotlin

J2EE/JEE

MySQL

Oracle

SQL/PLSQL

Jasper reports

APIs RESTful/SOAP

XML

Linux (RHEL)

Shell scripting

AWS services

Kubernetes

Docker

Spring Framework

Struts 2.x

Spring Boot

Spring Batch

Spring Integration

ISO20022

Financial domain

Tools

AWS

Kubernetes

Docker

SQL/PLSQL

Jasper reports

Job description

Hong Kong Unison Limited in Singapore seeks an Application Support Engineer to provide 24x7 operational support, monitor alerts and manage incidents, and participate in deployments. You will handle production queries from MAS, banks, auditors and other BCs users.

The role requires strong SDLC knowledge, analytical skills, and hands-on experience with Java, Kotlin, databases, APIs, Linux, and cloud services. Collaboration and security awareness are essential.