Senior Maintenance Engineer – Security & Systems

HRNET VENTURES PTE. LTD.; Singapore; On-site; SGD 50,000 - 84,000; Full time

Job summary

HRNET VENTURES PTE. LTD. is seeking an experienced security systems engineer to troubleshoot and maintain complex CCTV and access control systems in mission-critical environments.

You will handle on-site diagnostics, perform firmware upgrades, and coordinate with vendors for updates. The role requires knowledge of LenelS2 OnGuard, Genetec, Milestone VMS, and HID/Mercury-based systems, plus 4–5 years hands-on experience and IT/engineering qualifications.

Qualifications

• Diploma / Nitec in IT, Computer Engineering, Electrical/Electronics Engineering, or related field.
• Technical certifications in CCTV and Access Control systems are highly recommended.
• 4 – 5 years of hands‑on experience
• Strong understanding of: Network connection, SQL databases, Windows Server, virtualized environments, door hardware, identity and access management, Video Management Software

Responsibilities

• Serve as the first and second-level technical escalation point for maintenance-related issues.
• Perform on-site troubleshooting, diagnosis, and resolution of hardware, software, and network-related faults.
• Conduct root cause analysis (RCA) and implement corrective actions to prevent recurring issues.
• Replace faulty hardware, perform firmware upgrades, software patching, and system optimization.
• Coordinate with vendors for advanced technical support, bug fixes, and system updates.
• Configure, maintain, and optimize access control and video management systems.
• Support controller configurations, card readers, credential management, biometric authentication, and access permissions.
• Troubleshoot integrations between security subsystems and enterprise platforms.
• Ensure systems remain secure, stable, and operational in mission-critical environments.
• Execute preventive maintenance schedules and routine system health checks.
• Recommend upgrade strategies and lifecycle management plans.
• Prepare detailed service reports and maintain accurate technical documentation.
• Update system design documentation whenever hardware or software changes are implemented.

Skills

Network connection

SQL databases

Windows Server

Virtualized environments

Door hardware

Identity and access management

Video Management Software

Education

Diploma / Nitec in IT, Computer Engineering, Electrical/Electronics Engineering, or related field

Tools

LenelS2 OnGuard

HID / Mercury-based Access Control Systems

Genetec

Suprema

ZKTeco

Axis Communications

Milestone VMS

Job description

HRNET VENTURES PTE. LTD. is seeking an experienced security systems engineer to troubleshoot and maintain complex CCTV and access control systems in mission-critical environments.

You will handle on-site diagnostics, perform firmware upgrades, and coordinate with vendors for updates. The role requires knowledge of LenelS2 OnGuard, Genetec, Milestone VMS, and HID/Mercury-based systems, plus 4–5 years hands-on experience and IT/engineering qualifications.