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 experience 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 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

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

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