Senior Infrastructure Lead — 24/7 Enterprise IT & Security

HTX (Home Team Science & Technology Agency); Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

HTX is Singapore's Science and Technology agency driving transformative, operationally ready solutions for public safety. The ICT Infrastructure Sustainment Centre delivers robust ICT infrastructure to empower MHA/HTX operations.

You will lead hands-on technical infrastructure for enterprise servers and networks, ensuring availability, security, and performance in complex environments. Ideal candidates have 5+ years in system/network admin, infra architecture or cloud operations, with expertise

Qualifications

• Tertiary qualification in Electrical Engineering, Computer Science, IT, or related technical disciplines.
• Minimum 5 years of hands-on system/network administration, infrastructure architecture, or cloud operations.
• Proven track record maintaining 24/7 operational systems with strict SLAs and rapid response times.
• Deep knowledge of Active Directory, GPO, Domain Controllers, File/App Servers, and Patch Management.
• Hands-on experience with Hypervisors (VMware/Hyper-V/Nutanix) and large-scale private/public cloud infra.
• Experience with SAN/NAS, backup appliances, and enterprise networking concepts (VLANs, Firewalls).
• Experience conducting IT/compliance audits and strong cybersecurity know-how.
• Proficiency with ITSM tools (e.g. ServiceNOW) and systems engineering lifecycle management.

Responsibilities

• Hands-On Infrastructure Management: manage enterprise services including network equipment, AD, file/app servers, hypervisors, and storage; ensure availability.
• System Life-Cycle Engineering: oversee lifecycle from procurement to deployment, patching, sustainment, and migration.
• Technical Problem Solving: Tier-3 escalation for server/network incidents; minimize downtime.
• Vendor & Warranty Management: own vendor deliverables and ensure warranty/maintenance specs before handover.
• Security & Compliance: implement security best practices and lead remediations for IT audits and compliance checks.

Skills

Active Directory

GPO

Domain Controllers

Patch Management

VMware/Hyper-V/Nutanix

Private/Public Cloud

SAN/NAS

Networking (VLANs, Load Balancing, Rou

Education

Electrical Engineering / Computer Science / IT

Tools

ServiceNOW

Job description

HTX is Singapore's Science and Technology agency driving transformative, operationally ready solutions for public safety. The ICT Infrastructure Sustainment Centre delivers robust ICT infrastructure to empower MHA/HTX operations.

You will lead hands-on technical infrastructure for enterprise servers and networks, ensuring availability, security, and performance in complex environments. Ideal candidates have 5+ years in system/network admin, infra architecture or cloud operations, with expertise