Application Support Engineer

UNISON Group; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

UNISON Group in Singapore seeks an Application Support Engineer to ensure 24x7 operational stability, monitor alerts, and manage incidents. You will assist deployments and respond to production queries from MAS, banks, auditors and other BCS users, requiring strong Java/Kotlin and database expertise.

The role emphasizes SDLC mastery, problem solving, and teamwork, with exposure to AWS, Docker, Kubernetes, and Spring frameworks. Bilingual communication and pressure handling are valued.

Qualifications

• Hands-on experience across SDLC with deep debugging and troubleshooting skills.
• Strong analytical, problem-solving and communication abilities.
• Ability to work under pressure and meet tight SLAs.
• Independence and teamwork with a fast-learning mindset.
• Solid troubleshooting with adaptable strategies.
• Experience with Java, Kotlin, J2EE/JEE and database systems.
• Familiarity with Linux, AWS cloud services, and container tech.

Responsibilities

• Provide 24x7 day-to-day support and ensure environment stability.
• Monitor alerts, perform incident and problem management.
• Participate in application deployments and maintenance.
• Assist external stakeholders with production queries and RFIs (MAS, banks, auditors).

Skills

Java

Kotlin

J2EE/JEE

MySQL

Oracle

SQL/PLSQL

Jasper reports

RESTful APIs

SOAP APIs

XML

Linux (RHEL)

Unix shell scripting

AWS

Kubernetes

Docker

Spring Framework

Struts 2.x

Spring Boot

Spring Batch

Spring Integration

Financial Clearing

ISO20022

Encryption keys / SSL

Tools

Docker

Kubernetes

AWS services

CloudWatch

Job description

Position Overview: The Application Support Engineer will assist in operational tasks such as 24x7 day-to-day support, ensure stability of environments, monitor alerts, and perform incident and problem management. The incumbent will also participate in application deployments and assist external parties, e.g. addressing regular production related queries and RFIs from MAS, banks, auditors and other BCS users.

Requirements

• Good understanding of Software Development Life Cycle (SDLC)
• Good analytical and problem-solving skills
• Good oral and written communication skills
• Ability to work under pressure and to handle tight SLAs
• Motivated, self-driven fast learner with ability to work independently and within a team
• Passionate reading the codebase and understanding how the system behaves.
• Solid skills in troubleshooting and adapting different strategies based on the situation
• Technically with at least 5 years of hands-on experience in Java, Kotlin, J2EE/JEE, MySQL, Oracle, SQL/ PLSQL, Jasper report, APIs (RESTful and SOAP) and/or XML.
• Understanding of Linux OS such as RHEL and Unix shell scripting.
• Experience in AWS services (CloudWatch, KMS, S3, RDS, EKS, ec2, ALB, Api Gateway)
• Knowledge of Cryptographic concepts like Encryption Keys and SSL certificates is a plus.
• Understanding the micro services architecture & containers & orchestration services like Kubernetes and Docker
• Cloud-based architecture and DevSecOps technologies are a plus.
• Experience in Spring 4.x / 5.x / 6.x and Struts 2.x frameworks, Spring Boot and/or Spring Batch, Spring Integration would be added advantage.
• Domain knowledge of Financial Clearing and Payment Systems and ISO20022 standard is a plus.