Senior Systems and Network Engineer

Ren Ci Hospital; Singapore; On-site; SGD 60,000 - 80,000; Full time

Job summary

Ren Ci Hospital in Singapore is looking for a Systems Administrator who will be responsible for maintaining servers, managing network services, and ensuring security compliance. The ideal candidate should have at least 5 years of experience in IT operations, alongside relevant certifications.

This role requires expertise in systems and network management, strong troubleshooting skills, and the ability to implement best practices in cybersecurity. The position supports a rotating roster for standby duties during off-office hours, ensuring high availability of services.

Qualifications

• At least 5 years of experience in systems, network, and cybersecurity support.
• Experience with hands-on network devices and security tools.
• Strong background in implementing cybersecurity practices.

Responsibilities

• Maintain Windows servers and virtualization platforms.
• Implement and monitor network designs and security policies.
• Create documentation for network configurations and procedures.
• Provide standby support during off-office hours.

Skills

Windows Server environments

Active Directory management

Networking and security certifications

Hands-on experience with firewalls and routers

Cybersecurity best practices

Education

Bachelor’s degree in information technology

Tools

SolarWinds

Veeam

Nessus

Microsoft Entra

Job description

Perform Systems Administration

• Maintain Windows servers, virtualization platforms, and storage solutions.
• Manage Active Directory, DNS, DHCP, and Group Policy. Ensure high availability and disaster recovery with backups and replication.
• Monitor system performance, troubleshoot issues, and apply patches and updates.

Maintain Network Services

• Implement network design, configure, and maintain LAN, WLAN, and VPN infrastructure, managing firewalls, switches, and routers.
• Implement and monitor network security policies, intrusion detection, and access control.
• Optimize network performance, troubleshoot connectivity issues, and ensure redundancy.

Ensure Security and Compliance

• Implement cybersecurity best practices, monitor threats, and manage endpoint protection and vulnerability assessments.
• Ensure compliance with regulations (e.g., HIB).
• Conduct security audits and enforce policies on user access, encryption, and authentication.

Documentation and Reporting

• Create and maintain network documentation, including network diagrams, configurations, and procedures.

On Rotating Roster

• Provide standby support during off-office hours and weekend on a rotational basis.

Ad-Hoc Assignments

• Carry out any other tasks assigned by the supervisor or RO.

Job Requirements

• Bachelor’s degree in information technology or related field.
• With networking, system and security certifications such as CCNA, CCNP, CCIE, Microsoft certified Azure Solutions Architect and/or Windows Server Administrator, CISSP, CISM and CompTIA Security.
• At least 5 years of experience providing systems, network and cybersecurity operational support.
• Must have hands‑on experience with servers, network and security devices, firewall, switches, routers, load balancers and wireless solutions.
• Within experience in at least 5 of the below technologies:
  • Windows Server environments, including installation, configuration, maintenance, and troubleshooting.
  • Managing and maintaining Active Directory, including user and group management, Group Policy, and domain services.
  • Nutanix Hyper‑Converged Infrastructure (HCI) or equivalent technologies, including deployment, configuration, and management of Nutanix clusters.
  • NAS systems such as Synology, including RAID configurations, storage pools, volume management, and monitoring storage health.
  • Deploying, configuring, and managing Backup & Replication solutions such as Veeam. Experience with backup strategies, disaster recovery, and data restoration.
  • SQL Server backups technologies such as Redgate, including configuring backup schedules, performing restores, and ensuring data integrity.
  • Network monitoring tools such as SolarWinds, including setting up and managing network and server monitoring, creating alerts, and troubleshooting performance issues.
  • Managing privileged accounts, including password rotation, session management, and auditing using PAM tools such as Password State and CyberArk.
  • Vulnerability scanning and assessment technologies such as Nessus and OpenVAS, including configuring scans, analysing results, and implementing remediation plans.
  • Microsoft Entra for identity and access management, including integration with Azure AD, managing user identities, and ensuring secure access to resources.
  • Cloud platforms such as Azure, AWS and/or GCP.