Senior Infrastructure Security Engineer — Hybrid Cloud

ARGYLL SCOTT CONSULTING PTE. LTD.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

ARGYLL SCOTT CONSULTING PTE. LTD. is seeking a Senior Infrastructure, Security Specialist for a 12‑month contract in Singapore. You will blend hands‑on infrastructure operations with cloud security, incident response, and vendor coordination, supporting a hybrid environment.

The role requires 5+ years in IT infrastructure and at least 3 years in security engineering/operations, with strong knowledge of Zero Trust, SIEM and enterprise firewalls.

Qualifications

• Degree in Information Technology or Engineering or equivalent professional experience.
• 5+ years in IT infrastructure, networks, security administration and/or cloud support.
• At least 3 years in infrastructure security or security engineering/operations.
• Experience in hybrid on‑premise and public cloud environments.
• Hands-on knowledge of enterprise networking and security tech including firewalls and Zero Trust.
• Experience with SIEM, vulnerability management and cloud security tools.
• Experience in at least one incident-response exercise or security audit.

Responsibilities

• Manage day‑to‑day network, cloud and workplace infrastructure operations while ensuring availability and security.
• Design and secure network infrastructure including firewalls, VPNs, IDS/IPS, and network segmentation.
• Administer Zero Trust and secure remote access for users and sites.
• Secure cloud environments with identity controls, encryption, logging, and hardening.
• Monitor alerts, investigate incidents and support timely resolution.
• Support vulnerability management, penetration testing, and compliance reviews.
• Develop incident‑response procedures and participate in security drills.
• Coordinate internal tech teams and external service providers; maintain docs.

Skills

IT Infrastructure

Network Security

Zero Trust

Cloud Security

SIEM

Vulnerability Management

Incident Response

Firewalls

M365

Vendor Management

Education

Degree in Information Technology or Engineering

Job description

ARGYLL SCOTT CONSULTING PTE. LTD. is seeking a Senior Infrastructure, Security Specialist for a 12‑month contract in Singapore. You will blend hands‑on infrastructure operations with cloud security, incident response, and vendor coordination, supporting a hybrid environment.

The role requires 5+ years in IT infrastructure and at least 3 years in security engineering/operations, with strong knowledge of Zero Trust, SIEM and enterprise firewalls.