Job Summary

We are seeking a highly skilled and experienced Cloud Engineer lead (Level 3) to support cloud infrastructure for Commercial and Singapore Government-appointed agency operating across commercial cloud platforms. This role requires experiences managing multi-cloud environments predominantly on Amazon Web Services (AWS), with knowledge in Microsoft Azure and Google Cloud Platform (GCP). The ideal candidate will demonstrate strong Infrastructure-as-Code (IaC) capabilities, comprehensive OS lifecycle and patching operations, application deployment and troubleshooting expertise, and proactive operational leadership. This role emphasizes hands-on technical proficiency, security awareness, automation-driven practices, mentorship capabilities, and familiarity with strict uptime, compliance, and audit requirements in network separation environments.

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 (2016→2025) 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