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Unison Group

Application Support Engineer (Java / PL-SQL / AWS)

Unison Group
Singapore · Contract · Mid-Senior

Job Overview

We are looking for a highly skilled Application Support Engineer with advanced expertise in Java, PL/SQL, and AWS to support mission-critical enterprise applications. The role involves production support, troubleshooting complex issues, system monitoring, and ensuring application stability and performance in a cloud-based environment.

Key Responsibilities

  • Provide L2/L3 production support for enterprise applications built using Java-based technologies.
  • Diagnose and resolve complex application, database, and integration issues in a timely manner.
  • Write and optimize advanced PL/SQL queries, stored procedures, and performance tuning.
  • Monitor applications hosted on AWS cloud infrastructure and ensure high availability.
  • Perform incident management, root cause analysis (RCA), and problem management.
  • Work closely with development, DevOps, and infrastructure teams to resolve production issues.
  • Support application deployments, release management, and environment configuration.
  • Monitor system health using logging, monitoring, and alerting tools.
  • Ensure compliance with SLA, incident response time, and service delivery standards.
  • Maintain documentation for support procedures, known issues, and resolutions.

Required Skills

  • Strong hands-on experience in Java/J2EE technologies.
  • Advanced PL/SQL expertise including query optimization and database performance tuning.
  • Solid experience with AWS services (EC2, S3, RDS, CloudWatch, Lambda, etc.).
  • Experience in production support and incident management processes.
  • Strong knowledge of SQL databases (Oracle, PostgreSQL, or similar).
  • Experience with Linux/Unix environments and shell scripting.
  • Familiarity with CI/CD pipelines, version control (Git), and DevOps practices.
  • Excellent problem-solving and troubleshooting skills.

Preferred Skills

  • Experience supporting microservices architecture and REST APIs.
  • Knowledge of monitoring tools such as Splunk, Dynatrace, or ELK.
  • Experience in banking, financial services, or enterprise systems is a plus.
  • Understanding of containerization technologies (Docker, Kubernetes)

Key Skills

Ranked by relevance

aws devops cloud java incident response high availability containerization shell scripting microservices postgresql docker oracle splunk cicd git sql elk sla s3
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Posted
Mar 11, 2026
Type
Contract
Level
Mid-Senior
Location
Singapore

Industries

IT Services IT Consulting

Categories

Information Technology

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