Day 2 System Engineer

COMBUILDER PTE LTD; Singapore; On-site; SGD 89,000 - 134,000; Full time

Job summary

COMBUILDER PTE LTD seeks a Software System Engineer to support Day 2 operations, maintenance, and enhancements for IT projects in a 24/7 environment. You will ensure stability, reliability, security, and operational readiness of mission‑critical systems.

The role requires hands‑on experience with DevOps, container technologies, CI/CD, and production support. You will work with multiple teams across infrastructure, security, and development to drive reliable deployments and proactive improvements.

Qualifications

• A Diploma or Bachelor’s in Computer Science, Information Technology, Software Engineering, Computer Engineering or related field is required.
• Minimum 3 years of experience in software system engineering, DevOps engineering, production support, or related roles.
• Experience with enterprise or mission‑critical systems is highly preferred.

Responsibilities

• Provide Day 2 operational support for mission‑critical applications and platform services.
• Perform incident investigation, RCA, and issue resolution.
• Support production deployment activities, rollback and post‑deployment verification.
• Monitor system health, performance, logs and alerts.
• Collaborate with Day 1, infrastructure, cybersecurity, and project teams.
• Support DR, business continuity, and standby/after-hours activities.

Skills

Linux admin

CI/CD implementation

Container orchestration

SRE/Monitoring

Education

Diploma or Bachelor’s Degree in CS/IT/SE

Tools

GitLab CI/CD

Jenkins

Docker

Podman

Kubernetes

Git

React

Node.js

Spring Boot

Bash

Python

PowerShell

Job description

We are seeking a highly motivated and technically strong Software System Engineer to support the Day 2 operations, maintenance, and enhancement activities for IT Project. The candidate will be responsible for ensuring the stability, reliability, security, and operational readiness of mission-critical systems in a 24/7 operational environment.

The ideal candidate should possess strong hands-on experience in DevOps, middleware/platform support, container technologies, CI/CD pipeline management, troubleshooting, deployment automation, and production support operations.

Key Responsibilities:

Day 2 Operations & Support

• Provide Day 2 operational support for mission-critical applications and platform services.
• Perform incident investigation, troubleshooting, root cause analysis (RCA), and issue resolution.
• Support production deployment activities, rollback activities, and post-deployment verification.
• Monitor system health, application performance, logs, and operational alerts.
• Work closely with Day 1 support teams, infrastructure teams, software developers, cybersecurity teams, and project stakeholders.
• Support system recovery, disaster recovery (DR), and business continuity activities.
• Participate in standby support and after-office-hour support activities when required.
• Ensure compliance with operational procedures, governance, and security policies.

CI/CD & DevOps Engineering

• Build, maintain, and optimize CI/CD pipelines for:
• Source code management and branching strategy
• Code Quality Scanning
• Static Application Security Testing (SAST)
• Software Composition Analysis / Dependency Scanning
• Container Image Vulnerability Scanning
• Automated Build & Packaging
• Containerization of applications
• Automated Testing Integration
• Deployment File Generation
• Release Management & Deployment Automation

Container & Platform Management

• Deploy, configure, and manage containerized applications using:
• Docker
• Podman
• Kubernetes
• Support application deployments for:
• React applications
• Node.js applications
• Spring Boot applications
• Perform container troubleshooting, performance tuning, and resource optimization.
• Support Kubernetes cluster operations, deployment configurations, secrets management, ingress configuration, and scaling activities.

System Engineering & Administration

• Maintain middleware and application platform configurations.
• Support Linux and Windows server environments.
• Perform system patching, configuration updates, and preventive maintenance activities.
• Manage environment configurations across DEV, SIT, UAT, and Production environments.
• Support certificate renewal, configuration management, and secure connectivity setup.
• Maintain deployment scripts, automation scripts, and operational tools.

Monitoring & Reliability Engineering

• Configure and maintain monitoring dashboards, alerts, and health checks.
• Monitor system availability, application performance, and resource utilization.
• Support log analysis and troubleshooting using centralized logging tools.
• Identify proactive improvement opportunities to enhance operational stability and reliability.

Documentation & Compliance

Prepare and maintain:

• System architecture documentation
• Deployment procedures
• Operational runbooks
• Troubleshooting guides
• SOPs and technical reports
• Support audit activities, security compliance reviews, and operational assessments.

Qualifications & Experience

• Diploma or Bachelor’s Degree in: Computer Science, Information Technology, Software Engineering, Computer Engineering or related disciplines
• Minimum 3 years of relevant working experience in: Software system engineering, DevOps engineering, Application support, Production support, Platform/system administration
• Experience supporting enterprise or mission-critical systems is highly preferred.
• Experience in government or large-scale enterprise environments will be an advantage.

Technical Skills & Competencies

• Strong knowledge of: Linux administration, Application deployment and troubleshooting, CI/CD pipeline implementation, Container technologies and orchestration
• Hands-on experience with: GitLab CI/CD, Jenkins, Docker, Podman, Kubernetes, Git
• Familiarity with: React, Node.js, Spring Boot
• Experience in scripting and automation using: Bash, Python, PowerShell, Shell scripting
• Experience with monitoring and observability tools such as: eG Enterprise, Prometheus, Grafana, Nagios, Zabbix
• Understanding of database technologies: SQL databases, NoSQL databases
• Basic database troubleshooting and query knowledge preferred.
• Understanding of: Secure system hardening, Cybersecurity best practices, Vulnerability management, Secure CI/CD practices, Certificate and secret management

Candidates with experience in the following areas will have an added advantage:

• VMware or virtualization technologies
• Kafka or messaging technologies
• API integrations and middleware support
• High Availability (HA) and Disaster Recovery (DR) environments
• Government project operational support
• ITIL incident/problem/change management processes
• Container security and image scanning tools
• SonarQube or code quality tools

Working Environment

• 24/7 operational support environment
• May require standby support and after-office-hour deployment support
• Collaborative environment involving infrastructure, cybersecurity, application, and operations teams