Senior AWS Cloud & Infrastructure Engineer (L3)

SAGL Consulting; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

SAGL Consulting is seeking a senior AWS Cloud Engineer to manage cloud infrastructure, drive performance optimisation, and provide production support across Windows and Linux environments.

You will handle complex escalations, design HA/DR solutions, and lead automation initiatives with a focus on security and best practices. Strong AWS service expertise and relevant certifications are required.

Qualifications

• Minimum 6 years of overall IT experience.
• At least 5 years in AWS/Cloud and Windows/Linux infrastructure operations.
• AWS Solutions Architect – Professional and/or AWS DevOps Engineer – Professional certification required.

Responsibilities

• Provide L3 technical support across AWS cloud services and OS.
• Administer and troubleshoot AWS EC2, Lambda, ECS, S3, IAM, KMS, WAF and Route 53.
• Manage CloudWatch monitoring and backup services.
• Lead root cause analysis for infrastructure incidents.
• Analyse infrastructure performance and implement optimisation measures.
• Support automation of cloud and OS administration tasks.
• Design and support High Availability and Disaster Recovery solutions.
• Execute complex infrastructure changes and validate implementations.
• Provide technical escalation support to L1/L2 engineers.

Skills

Troubleshooting

Automation

Root cause analysis

HA/DR planning

Education

Bachelor's degree in IT/CS

Tools

EC2

Lambda

ECS

S3

IAM

KMS

WAF

Route 53

CloudWatch

Job description

Job Description

We are looking for a senior AWS Cloud Engineer with strong expertise in cloud infrastructure and Windows/Linux systems to handle complex technical escalations, infrastructure optimisation and production support.

Key Responsibilities

• Provide L3 technical support across AWS cloud services and operating systems.

• Administer and troubleshoot AWS EC2, Lambda, ECS, S3, IAM, KMS, WAF and Route 53.

• Manage AWS CloudWatch monitoring and AWS Backup services.

• Perform advanced Windows and Linux troubleshooting.

• Lead root cause analysis for recurring and critical infrastructure incidents.

• Analyse infrastructure performance and implement optimisation measures.

• Support automation of cloud and operating system administration tasks.

• Design and support High Availability (HA) and Disaster Recovery (DR) solutions.

• Execute complex infrastructure changes and validate implementation.

• Support cloud security, IAM, KMS, WAF and OS hardening.

• Provide technical escalation support to L1 and L2 engineers.

Requirements

• Minimum 6 years of overall relevant experience.

• Minimum 5 years in AWS/Cloud and Windows/Linux infrastructure operations.

• Strong hands‑on experience with EC2, Lambda, ECS, S3, IAM, KMS, WAF, Route 53 and CloudWatch.

• Strong Windows and Linux administration and troubleshooting skills.

• Experience in automation, HA/DR, performance optimisation and root cause analysis.

• Experience handling complex production infrastructure incidents.

• Bachelor's degree in IT, Computer Science or equivalent qualification.

• AWS Certified Solutions Architect – Professional and/or AWS Certified DevOps Engineer – Professional certification required.
  

  #AWS #AWSArchitecture #Linux #WindowsServer #AWSBackup #DisasterRecovery #CloudOperations