Infrastructure Security Engineer — Secure & Scale IT

PERSOL SINGAPORE PTE. LTD.; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

PERSOL Singapore Pte Ltd is seeking an IT Infrastructure Administrator to manage and maintain the company's IT backbone in Singapore. You will ensure high availability of servers, networks, and security systems, supporting a multi-site environment and complying with corporate policies.

The role covers AD/DNS/file servers, backup solutions, endpoint security, patching and hardening, plus IT governance, audits, and end-user support.

Qualifications

• Degree in Information Technology, Computer Science, Cybersecurity, or related IT field.
• Hands-on experience with Windows Server administration and network management.
• Experience with IT security operations, firewalls, VPNs, and EDR solutions.
• Knowledge of IT governance, security frameworks, and compliance requirements.
• Strong troubleshooting and stakeholder management skills.

Responsibilities

• Manage and maintain IT infrastructure and security systems for high availability.
• Perform server and network administration: AD, DNS, file servers, backups.
• Monitor and remediate security vulnerabilities via patching and hardening.
• Support governance, audits, policy reviews, and infrastructure documentation.
• Provide end-user IT support and office IT administration.

Skills

Troubleshooting

Stakeholder management

Security operations

IT governance

Education

Bachelor's degree in IT/CS

Tools

Windows Server

Active Directory

DNS

VPNs

Firewalls

Backup solutions

Job description

PERSOL Singapore Pte Ltd is seeking an IT Infrastructure Administrator to manage and maintain the company's IT backbone in Singapore. You will ensure high availability of servers, networks, and security systems, supporting a multi-site environment and complying with corporate policies.

The role covers AD/DNS/file servers, backup solutions, endpoint security, patching and hardening, plus IT governance, audits, and end-user support.