Application Support Engineer (UAT / Payment Systems)

NEWBRIDGE ALLIANCE PTE. LTD.; Singapore; On-site; SGD 70,000 - 110,000; Full time

Job summary

NEWBRIDGE ALLIANCE PTE. LTD. is seeking an experienced Application Support Engineer to manage the UAT environment for our key Payment Systems. You will collaborate closely with Development, QA and Infra teams to ensure high availability, stability and smooth execution of UAT cycles.

The role covers deployment, monitoring, incident management, automation, and documentation with strong ownership and proactive problem solving. Excellent communication across multiple stakeholders is essential.

Qualifications

• 4-8 years of experience in Application Support, UAT, or Non-Production Environment Management.
• Experience in Banking / Payment Systems domain is highly preferred (SWIFT, MEPS+, FAST, GIRO, PayNow).
• Strong analytical and problem-solving skills with a strong sense of ownership.
• Excellent communication skills to manage multiple stakeholders across Dev, QA and Infra.
• Bachelor's Degree in Computer Science, Engineering or related field.
• ITIL knowledge is a plus

Responsibilities

• Own the UAT Environment & Deployment Management including installation, configuration and patching of Java-based apps.
• Perform end-to-end deployment of releases, hotfixes, and scripts (Shell, SQL, Java).
• Ensure environment readiness before each QA cycle and maintain deployment checklists per change management.
• Perform daily/weekly health-checks on application logs, servers, Oracle DB jobs, and batch jobs.
• Proactively identify performance bottlenecks and stability risks; implement proactive alerts and preventive measures.
• Drive continuous improvement to enhance UAT availability and stability.
• Provide L2/L3 support for UAT issues; perform RCA and permanent fixes.
• Coordinate with Development, QA, DBA and Infra to resolve issues within SLA.
• Automate manual tasks related to monitoring and recovery to improve MTTR.
• Create and maintain Runbooks, SOPs, Deployment Guides, and Knowledge Base articles.
• Ensure all RCA documents are delivered within 48 hours of incident closure.
• Maintain SOPs, Runbooks & Deployment Checklists.

Education

Bachelor's Degree in Computer Science, Engineering or related field

ITIL knowledge

Tools

Jenkins

JIRA

ServiceNow

AppDynamics

Dynatrace

Grafana

WebLogic

JBoss

Tomcat

Oracle DB 19c

Shell Scripting

CI/CD concepts

Job description

Our client is looking for an experiencedApplication Support Engineerto manage and support the UAT environment for their key Payment Systems. You will be part of a collaborative team working closely with Development, QA, and Infrastructure teams to ensure high availability, stability, and smooth execution of UAT cycles. This is a critical role requiring strong ownership in environment management, deployment, and L2/L3 troubleshooting.

2. Key Roles & Responsibilities

A. UAT Environment & Deployment Management

• Own the installation, configuration, and patching of Java-based applications in the UAT environment.
• Perform end-to-end deployment of application releases, hotfixes, and scripts (Shell, SQL, Java).
• Ensure environment readiness before each QA cycle and maintain deployment checklists in compliance with change management (JIRA / ServiceNow).

B. Monitoring & Stability

• Perform daily and weekly health-checks on application logs, servers (CPU, Memory, Disk - Linux / Solaris), Oracle DB 19c jobs, and batch jobs.
• Proactively identify performance bottlenecks and stability risks; implement proactive alerts and preventive measures.
• Drive continuous improvement initiatives to enhance UAT availability and stability.

C. Incident Management & Troubleshooting

• Provide L2/L3 support for UAT issues - perform detailed troubleshooting, Root Cause Analysis (RCA), and provide permanent fixes.
• Analyze Java logs, heap dumps, thread dumps, and Oracle AWR reports for RCA.
• Act as the central coordinator, engaging Development, QA, DBA and Infra teams to resolve issues within SLA.

D. Automation & Documentation

• Automate manual tasks related to monitoring, health-checks, and recovery to improve MTTR.
• Create and maintain Runbooks, SOPs, Deployment Guides, and Knowledge Base articles.
• Ensure all RCA documents are delivered within 48 hours of incident closure.

3. Tech Stack & Skills Required

• Programming / Debugging:Java 8/17/21 - strong in log analysis, heap/thread dump analysis
• OS & Scripting:Linux / Solaris Administration, Shell Scripting
• Database:Oracle DB 19c - SQL, job monitoring, AWR analysis
• Application Servers:WebLogic / JBoss / Tomcat
• Tools:Jenkins, JIRA, ServiceNow, Monitoring Tools (e.g., AppDynamics, Dynatrace, Grafana)
• Other:Batch job schedulers, CI/CD concepts

4. Deliverables & KPIs

Deliverables:

1. Weekly UAT Health & Stability Report
2. Deployment Log & Release Tracking
3. RCA Documentation (within 48h)
4. Automated Monitoring & Auto-Recovery Scripts
5. Maintained SOPs, Runbooks & Deployment Checklists

KPIs:

• UAT Environment Availability > 99.5%
• MTTR < 4 Hours
• Deployment Success Rate > 98%
• 100% compliance on documentation and reporting timelines

5. Qualifications

• 4-8 years of experience in Application Support, UAT Support, or Non-Production Environment Management.
• Experience in Banking / Payment Systems domain is highly preferred (SWIFT, MEPS+, FAST, GIRO, PayNow).
• Strong analytical and problem-solving skills with a strong sense of ownership.
• Excellent communication skills to manage multiple stakeholders across Dev, QA and Infra.
• Bachelor's Degree in Computer Science, Engineering or related field.
• ITIL knowledge is a plus