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Key Responsibilities

Multi-Cloud Infrastructure Operations

Operate and maintain cloud-native services in production across AWS, Microsoft Azure, and Google Cloud Platform:
Hands-on experience with cloud services including: Lambda, ECS/EKS, FSx, Glue, SES, GuardDuty, WAF, Shield Advanced, Security Hub, KMS, Secret Manager, SNS, SQS, EventBridge, API Gateway, EC2, S3, CloudWatch, Systems Manager, Azure Virtual Machines, Azure Kubernetes Service (AKS), Azure Functions, Azure Storage, Azure Monitor, Compute Engine, Google Kubernetes Engine (GKE), Cloud Functions, Cloud Storage, Cloud Monitoring
Monitor and troubleshoot infrastructure performance, uptime, and scalability across all platforms
Support production and staging environments with 24/7 reliability objectives
Able to participate in 24/7 shift rotation to provide round-the-clock operational support and assist a team of L2 engineers with hands-on troubleshooting of technical issues.

Infrastructure as Code (IaC)

With working knowledge, able to maintain infrastructure deployment pipelines with 1 of the following: Terraform, Ansible, and/or Azure Resource Manager (ARM) templates
Troubleshoot environment drift and pipeline failures across multi-cloud environments.
Promote and be empowered to drive automation in cloud operations and continuous improvement initiatives.
Implement and maintain GitOps practices for infrastructure deployment

Operating System Lifecycle Patch Management

Lead OS patching operations across RHEL (v8 to v10) and Windows Server (20162025) using AWS Patch Manager, Azure Update Management, WSUS, SCCM, and YUM/DNF
Maintain basic knowledge of Linux administration with deep expertise in Wintel Operating System patching and management
Schedule, automate, and track patches across all environments
Coordinate patch approvals and ensure compliance with organizational policies
Execute monthly and quarterly patch cycles with minimal disruption
Perform post-patch validation and remediation activities

Application Deployment Troubleshooting

Deploy and troubleshoot applications across Windows and Linux operating systems
Support application teams with OS-level diagnostics and performance optimization
Collaborate with development teams to resolve infrastructure and OS-related application issues
Implement and maintain application monitoring and alerting frameworks

Security Compliance

Execute CIS (Center for Internet Security) security remediations across cloud platforms
Perform security hardening based on CIS Benchmarks and government security baselines
Conduct vulnerability remediation using tools such as Trend Micro Vision One, Qualys, Tenable, and AWS Config
Track SSL certificate renewals across all environments
Identify and remediate End-of-Life (EOL) components including OS versions and Lambda runtimes
Support compliance with government-level security, audit, and regulatory requirements

Container DevSecOps

Demonstrate knowledge of container technologies (Docker, Kubernetes, ECS, EKS, AKS, GKE)
Familiarity or insights of DevSecOps practices using SHIP-HATS (Secure Hybrid Integration Pipeline - Hive Agile Testing Solutions) under Singapore Government technology stack
Support CI/CD pipeline operations and integration with security scanning tools

ITIL Service Management

Adhere to ITIL processes including Incident, Problem, Change, and Request Management
Manage and resolve ITSM tickets via ServiceNow, Jira, or similar platforms
Drive ITSM ticket escalation between engineering teams and stakeholders
Coordinate change management activities and participate in Change Advisory Board (CAB) reviews with junior engineers.
Maintain service level agreements (SLAs) and operational level agreements (OLAs)

Tool Integration Observability

Integrate third-party tools including NGINX, monitoring dashboards, and observability stacks
Configure and maintain observability tools for metrics, logs, and alerts across multi-cloud environments
Implement log aggregation and analysis using CloudWatch, Azure Monitor, and GCP Cloud Logging

Documentation Knowledge Management

Create and maintain comprehensive infrastructure runbooks, system documentation, and change tracking logs and infrastructure architecture design of Application assigned.
Develop standard operating procedures (SOPs) and knowledge base articles
Ensure audit-readiness through meticulous documentation discipline
Maintain configuration management databases (CMDB) and asset inventories

Leadership Mentorship

Provide technical guidance and mentorship to Level 2 and junior engineers
Lead technical discussions and architecture reviews
Facilitate knowledge transfer sessions and training programs
Act as escalation point for complex technical issues
Drive continuous improvement initiatives and best practice adoption

Soft Skills Competencies

Problem Solving – Advanced troubleshooting of complex multi-cloud systems
Communication – Clear and effective communication with technical and non-technical teams, stakeholders, and management
Leadership – Ability to guide teams and drive technical initiatives
Collaboration – Cross-functional teamwork across engineering, security, and business teams
Adaptability – Responsive and effective in rapidly changing environments
Accountability / Attention to Detail – Takes ownership of outcomes and service delivery, ensures accurate and secure implementations
Customer Focus – Supportive, service-oriented approach with stakeholder management
Continuous Learning – Stays current with evolving cloud and security practices
Resilience – Performs effectively under pressure and during incident response
Mentorship – Develops and supports junior team engineers

SME Expectations – Role Behavior

This Subject Matter Expert (SME) Role Requires

Proficiency across Amazon Web Services with working knowledge of Azure and GCP
Proven experience in uptime-critical and compliance-driven environments
Strong mentorship and leadership capabilities for junior and mid-level engineers
Proactive initiative in incident prevention and operational excellence
Calm, structured, and methodical approach to incident handling with strict adherence to change management and incident response processes
Audit-readiness mindset with comprehensive documentation practices
Ability to drive escalations and manage stakeholder communications effectively
Experience working within Singapore Government technology frameworks

Technical Skills Experience

Area

Skills Required

Cloud Platforms

Hands-on production experience with Amazon Web Services or Microsoft Azure or Google Cloud Platform

Infrastructure as Code

Terraform, ARM Templates

Operating Systems

Windows Server (2012/2016/2019/2022/2025), basic to intermediate Linux/RHEL administration

Patch Management

AWS Patch Manager, Azure Update Management, WSUS, SCCM, YUM/DNF, Air Gapped Linux Repo

Application Support

OS-level application deployment, troubleshooting, and performance optimization

Security Hardening

CIS Benchmarks, security remediation, vulnerability management, IAM best practices

Containers

Docker, Kubernetes, ECS, EKS, AKS

DevSecOps

Familiarity with SHIP-HATS and/or DevSecOps frameworks

ITIL ITSM

Incident, Problem, Change, Request Management; ServiceNow, Jira

SSL/Certificate Management

End-to-end SSL certificate lifecycle and renewal tracking

Scripting Automation

PowerShell, Bash, Python, AWS CLI, Azure CLI, gcloud CLI

Documentation

Runbooks, SOPs, Logs, and technical documentation

Required Qualifications

Bachelor's degree in Computer Science, Information Systems, or related field
Minimum 3 years of experience in Commercial Cloud Engineering roles
At least 2 years of experience in public sector or regulated cloud environments
Minimum 3 years of hands-on experience with AWS or Microsoft Azure or Google Cloud Platform
Experience in 24/7 operational support environments with shift rotation
Demonstrated experience in mentoring and leading junior engineers
Strong background in ITIL processes and ITSM platforms with experiences on CIS security hardening and remediation
Familiarity with Singapore Government technology standards and frameworks (e.g., SHIP-HATS, IM8 Policy)

Preferred Certifications

AWS Certified Solutions Architect – Associate / Professional
AWS Certified SysOps Administrator – Associate (preferred)
Microsoft Certified: Azure Administrator Associate or Azure Solutions Architect Expert
Microsoft Certified: Windows Server Hybrid Administrator Associate
RHCE or Linux Professional Institute Certification (LPIC)
ITIL v3/v4 Foundation

Work Arrangements

This role requires participation in 24/7 shift rotation to support critical infrastructure operations
Extended work hours may be required during incidents, maintenance windows, and change implementations
On-call support responsibilities as part of rotation schedule
Flexibility to work outside normal office hours for patching activities and emergency response

We are an Equal Opportunity Employer and do not discriminate against any employee or applicant for employment because of race, color, sex, age, religion, sexual orientation, gender identity, national origin, status as a veteran, and basis of disability or any federal, state, or local protected class.

Sr Operation Mgmt Specialist