Senior Infrastructure Engineer — 24/7 Public Safety IT

HTX (Home Team Science & Technology Agency); Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

HTX is Singapore's Science and Technology agency that brings together diverse scientific and engineering capabilities to develop transformative, operationally ready solutions for public safety. The ICT Infrastructure Sustainment Centre is responsible for robust enterprise ICT infrastructure that powers MHA/HTX operations.

The jobholder will be a hands-on technical lead, ensuring availability, security, and performance of enterprise-wide server and network ecosystems, including AD, storage, and

Qualifications

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

Responsibilities

• Hands-on infrastructure management of network gear, AD, file and app servers, hypervisors, and storage.
• Drive end-to-end lifecycle of ICT systems from evaluation to deployment, patching and refresh.
• Serve as Tier-3 escalation for complex server/network incidents to minimise downtime.
• Oversee vendor deliverables and ensure warranty/maintenance meet specs.
• Implement security hardening, GPO management, and assist IT audits/compliance.

Skills

Hands-on infra management

IT problem solving

Project drive

Security & compliance

Audits remediation

Education

Tertiary qualification in Electrical Eng/CS/IT

Tools

VMware

Hyper-V

Nutanix

SAN/NAS

VLANs

Load Balancing

Firewalls

ServiceNOW

Job description

HTX is Singapore's Science and Technology agency that brings together diverse scientific and engineering capabilities to develop transformative, operationally ready solutions for public safety. The ICT Infrastructure Sustainment Centre is responsible for robust enterprise ICT infrastructure that powers MHA/HTX operations.

The jobholder will be a hands-on technical lead, ensuring availability, security, and performance of enterprise-wide server and network ecosystems, including AD, storage, and