Senior Systems Administrator - Cloud & App Infra Lead

ST ENGINEERING TRAINING & SIMULATION SYSTEMS PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Benefits offered by this job

Competitive remuneration

Comprehensive benefits

Job summary

ST Engineering Training & Simulation Systems invites an experienced Senior System Administrator to oversee operational support, maintenance and continuous improvement of enterprise applications and supporting infrastructure. You will manage incidents, changes and ensure secure, reliable systems aligned with business objectives.

Join a global technology group delivering defence, public safety and enterprise training solutions, with opportunities to work on cloud platforms and cutting-edge

Qualifications

• Diploma in Information Technology, Computer Science, Computer Engineering, Information Systems, or a related discipline.
• At least 4 years of experience supporting, maintaining, and operating enterprise or cloud-based application solutions.
• Proven experience managing application support, infrastructure operations, and business-critical systems in a production environment.
• Hands-on experience supporting cloud-hosted applications and infrastructure on AWS, Microsoft Azure, or Google Cloud Platform.
• Experience with Java technology stacks, including technologies such as Spring Boot and Apache Tomcat.
• Proficiency in administering and supporting relational database platforms, including MySQL, PostgreSQL, and Microsoft SQL Server.
• Familiarity with infrastructure automation, scripting, and system monitoring tools is advantageous.

Responsibilities

• Coordinate application support activities to ensure timely resolution of incidents, service requests, and user-reported issues.
• Establish and maintain support processes, service levels, and operational procedures to support business requirements.
• Plan, coordinate, test, and implement application and infrastructure changes in accordance with established change management processes.
• Oversee application maintenance activities, including patching, upgrades, releases, and configuration changes.
• Assess risks associated with system changes and ensure appropriate mitigation measures are implemented.
• Collaborate with stakeholders to schedule and communicate planned maintenance and release activities.

Skills

Cloud platforms (AWS/Azure/GCP)

Java stack (Spring Boot / Tomcat)

Relational databases (MySQL / PostgreS

Automation scripting

Education

Diploma in IT/CS/CE/IS

Tools

Apache Tomcat

MySQL

PostgreSQL

SQL Server

Job description

ST Engineering Training & Simulation Systems invites an experienced Senior System Administrator to oversee operational support, maintenance and continuous improvement of enterprise applications and supporting infrastructure. You will manage incidents, changes and ensure secure, reliable systems aligned with business objectives.

Join a global technology group delivering defence, public safety and enterprise training solutions, with opportunities to work on cloud platforms and cutting-edge