Cloud Engineer - L3

We are seeking a skilled and experienced Cloud Engineer (SRE

• Level 2) to support a secure and scalable cloud infrastructure

for a Singapore Government-appointed agency operating on commercial

cloud platforms. This Subject Matter Expert (SME) role requires

real-world experience in managing multi-service cloud environments

using AWS, strong Infrastructure-as-Code (IaC) capabilities,

lifecycle and patching operations, and proactive operational

support. The ideal candidate will be hands-on, security-aware,

automation-driven, and familiar with strict uptime, compliance, and

audit requirements.

Key

Responsibilities : Cloud

Infrastructure Operations

Operate and

maintain AWS-native services in production, including Lambda, ECS,

EKS, FSx, Redshift, Glue, Neptune, SES, GuardDuty, WAF, Shield

Advanced, Security Hub, KMS, Secret Manager, SNS, SQS, EventBridge,

SageMaker, API Gateway.

Monitor and

troubleshoot infrastructure performance, uptime and

scalability.

Support production and staging

environments with 24 / 7 reliability

objectives.

Infrastructure as Code

(IaC)

Design and maintain

infrastructure deployment pipelines using Terraform,

CloudFormation, and Ansible.

Troubleshooot

environment drift and pipeline failures.

Promote automation in cloud

operations.

OS Lifecycle & Patch

Management

Manage patching across

RHEL (v8 to v9) and Windows Server (2016→2025) using AWS Patch

Manager, WSUS, and YUM / DNF.

Schedule,

automate, and track patches.

Coordinate

approvals and ensure compliance.

SSL

and EOL Management

Track SSL

certificate renewals across environments.

Identify and remediate EOL components like OS versions

and Lambda runtimes.

Tool

Integration & Interoperability

Integrate third party tools like NGINX, monitoring

dashboards and observability stacks.

Provide

inputs to SRE-managed observability tools for metrics, logs, and

alerts.

Documentation &

Compliance

Create and maintain

infrastructure runbooks, system documentation, and change tracking

logs.

Adhere to and support government-level

security, audit, and compliance

protocols.

SME Expectations - Role

Behavior

This Subject Matter Expert (SME) role

requires :

Proficiency across AWS

services and architecture.

Experience in

uptime-critical and compliant environments.

Audit-readiness and documentation

discipline.

Technical

Skills &

Experience

Area

Skills

Required

Cloud

production

CloudFormation, Ansible

Platforms

administration

AWS Patch Manager, WSUS, YUM / DNF

SSL / EOL

certificates and lifecycle tracking

Documentation

runbooks, tracking sheets, and change

logs

Required Qualifications

Bachelor's degree in computer science, Information

Systems, or related field.

Minimum 10 years'

experience in DevOps / SRE roles, with at least 5 years on public

sector or regulated Cloud environment

AWS

Certified Solutions Architect - Associate or

Professional

RHCE / Windows Server

Certification

Experience in regulated or

compliance driven environments (GovTech, Healthcare, Banking,

etc.)

Familiarity with ITIL and change

management process