112 System Administrators jobs in Singapore

Key Responsibilities

• The candidate will work in an international team and perform 2nd level support To perform troubleshooting support for problems related to network infrastructure (LAN/WAN/WIFI ), Firewalls and Web Access Security Gateways.
• Service and support of architectures & network infrastructure (LAN/WAN/WIFI), Routers, Firewalls, Web Access Security Gateways, servers, security controls, and ensuring implementation are in accordance with the agreed design.
• Monitor all systems and ensure all IT services are meeting service level agreement and issues are being resolved in a timely manner.
• Able to manage internal and external resources together with the IT colleagues on site when delivering any projects or tasks and ensure all deliverables are on time and on budget.
• Will work on projects regarding SD-WAN and our global network redesign with HPE Aruba devices.
• Will administrate security tools like Firewalls, zScaler Internet Access, HPE Aruba Clearpass NAC and VPN connections.
• Review all technical support related processes and documentation for continuous improvement.
• Will work on projects led by Germany HQ and will also do Network Support for Asia and other regions
• Maintenance and operations of network equipment in server rooms.

Requirements

• Degree in Computer Science / Telecommunications / Information Technology or any relevant.
• Relevant IT experience (e.g. Network administration, Firewall administration, Router administration, Proxy administration)
• At least 3-5 years' experience in an IT System/Network Admin role.
• Excellent troubleshooting, problem-solving and analytical skills.
• Experienced and knowledge in Windows and Linux, Cisco routers, LAN, WAN, SD-WAN, , Wireless, Switches, VPN, DNS, DHCP.
• Knowledge with HPE Aruba Clearpass and Central, zScaler or Checkpoint will be an added advantage.
• Professional certification in LAN, WAN or Firewall topics will be an added advantage.
• Travelling may be required.

The Network Administrator will support IT infrastructure availability, performance and stability. Responsibilities include configuration and implementation of infrastructure services including but not limited to data center network, campus networking, WAN connectivity, LANs, WLANs, and required operational security. The Network Administrator will be a member of a team of system administrators and engineers to provide support to the business.

Job Responsibilities:

• Provide support for current and future enterprise systems
• Works with the Service Desk team as the initial point of escalation to efficiently resolve incidents, identify and escalate problems and consistently maintain departmental SLAs within acceptable levels
• Follow Company IT security policies, procedures, best practices and established standards
• Assist with the optimization of IT infrastructure implementations, forecasting and maintenance
• Provide management with ways to improve administration, monitoring, reporting and standard operating procedures
• Maintain network hardware based on the IT initiatives and required upgrade projects within the organization
• Install and test wired and wireless network infrastructure
• Troubleshoot network systems including any reported routing or switching problems and recommend improvements
• Maintain router and switch configurations
• Provide network monitoring services utilizing various network management tools
• Adhere to Company's IT change control (enablement) process
• Help develop documentation and diagrams for all network projects that will be used for disaster recovery readiness on an ongoing basis
• Update current infrastructure equipment to current IOS levels and required Enterprise functionalities
• Perform router and switch upgrades within the enterprise
• Help ensure accuracy of the information in DNS and IP databases

Job Requirements:

• Degree in Computer Science/Information Technology or relevant work experience
• Minimum one year relevant experience working in a large Enterprise Network environment including a multi-protocol network
• Basic understanding of ITSM Principles or ITIL4 Foundations certification
• Must have proficient knowledge of operating systems, network systems and IT architecture
• Experience Active Directory Group Policy, Windows Administration
• WAN/LAN concepts and technologies
• DNS, IPAM, NTP administration
• Firewall concepts and technologies
• Experience with VMWare, vSphere environments
• Excellent interpersonal communication skills

Network Administrator

Our Esteemed and Reputable Client is looking for a Network Administrator to support and enhance their cloud and network infrastructure.

Responsibilities:

• Work closely with infrastructure, security, and cloud teams to ensure secure connectivity.
• Monitoring and configuring networking components like VPC, Security Groups, Route Tables.
• Manage and maintain Firewalls and VPN.
• Responding to network-related incidents and service requests.
• Document all configurations, procedures and changes.

Requirements:

• Familiarity with AWS networking services, ITIL processes (Incident, Change, Problem Management) and AWS Cloud platform.
• Team Player, excellent in documentation documentation, and communication skills.
  Certification in ITIL, AWS/Microsoft AZURE/Google cloud and Network preferred.

We respect your privacy and all communication will be treated with confidentiality.

Applicants who are not shortlisted may be considered for other similar positions.

If you have meet the job requirements that we are looking for or wish to find out more on this role, please contact us or apply in-confidence to us with you updated MS Word Resume to :

Kelvin (Reg. No. R

STAR CAREER CONSULTING PTE LTD (EA License: 20C0353)

The Network Adminsitrator will support IT infrastructure availability, performance and stability. Responsibilities include configuration and implementation of infrastructure services including but not limited to data center network, campus networking, WAN connectivity, LANs, WLANs, and required operational security. The Network Administrator will be a member of a team of system administrators and engineers to provide support to the business.

Job Responsibilities:

• Provide support for current and future enterprise systems
• Works with the Service Desk team as the initial point of escalation to efficiently resolve incidents, identify and escalate problems and consistently maintain departmental SLAs within acceptable levels
• Follow Company IT security policies, procedures, best practices and established standards
• Assist with the optimisation of IT infrastructure implementations, forecasting and maintenance
• Provide management with ways to improve administration, monitoring, reporting and standard operating procedures
• Maintain network hardware based on the IT initiatives and required upgrade projects within the organisation
• Install and test wired and wireless network infrastructure
• Troubleshoot network systems including any reported routing or switching problems and recommend improvements
• Maintain router and switch configurations
• Provide network monitoring services utilizing various network management tools
• Adhere to Company's IT change control (enablement) process
• Help develop documentation and diagrams for all network projects that will be used for disaster recovery readiness on an ongoing basis
• Update current infrastructure equipment to current IOS levels and required Enterprise functionalities
• Perform router and switch upgrades within the enterprise
• Help ensure accuracy of the information in DNS and IP databases

Job Requirements:

• Degree in Computer Science/Information Technology or relevant work experience
• Minimum one year relevant experience working in a large Enterprise Network environment including a multi-protocol network
• Basic understanding of ITSM Principles or ITIL4 Foundations certification
• Must have proficient knowledge of operating systems, network systems and IT architecture
• Experience Active Directory Group Policy, Windows Administration
• WAN/LAN concepts and technologies
• DNS, IPAM, NTP administration
• Firewall concepts and technologies
• Experience with VMWare, vSphere environments
• Excellent interpersonal communication skills

Job Description & Requirements

Network Design and Implementation:

• Design, configure, and deploy network solutions based on business requirements.
• Collaborate with cross-functional teams to ensure smooth implementation.
• Network Security:
• Monitor network traffic for security threats and vulnerabilities.
• Implement and maintain firewalls, intrusion detection systems, and access controls.
• Troubleshooting and Maintenance:
• Diagnose and resolve network issues promptly.
• Perform routine maintenance tasks, including updates and patches.
• Documentation and Reporting:
• Maintain accurate network documentation, diagrams, and inventory.
• Generate regular reports on network performance and incidents.
• User Support:
• Assist end-users with network-related inquiries and connectivity problems.
• Provide training on network best practices.

Qualifications:

• Bachelor's degree in Computer Science, Information Technology, or related field.
• Minimum of 2 years of experience in network administration.
• Proficiency in networking equipment.
• Knowledge of routing, switching, and subnetting.
• Experience with managing Microsoft 365
• Experience with Windows Servers preferred
  Experience with AWS preferred

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We regret that only shortlisted candidates will be notified.

Overview
Network Administrator
Our Esteemed and Reputable Client is looking for a Network Administrator to support and enhance their cloud and network infrastructure.
Responsibilities
Work closely with infrastructure, security, and cloud teams to ensure secure connectivity.
Monitoring and configuring networking components like VPC, Security Groups, Route Tables.
Manage and maintain Firewalls and VPN.
Responding to network-related incidents and service requests.
Document all configurations, procedures and changes.
Requirements
Familiarity with AWS networking services, ITIL processes (Incident, Change, Problem Management) and AWS Cloud platform.
Team Player, excellent in documentation documentation, and communication skills.
Certification in ITIL, AWS/Microsoft AZURE/Google cloud and Network preferred.
We respect your privacy and all communication will be treated with confidentiality.
Applicants who are not shortlisted may be considered for other similar positions.
If you have meet the job requirements that we are looking for or wish to find out more on this role, please contact us or apply in-confidence to us with you updated MS Word Resume to :
Kelvin (Reg. No. R )
STAR CAREER CONSULTING PTE LTD (EA License: 20C0353)
#J-18808-Ljbffr

Network Administrator

Our Esteemed and Reputable Client is looking for a Network Administrator to support and enhance their cloud and network infrastructure.

Responsibilities:

• Work closely with infrastructure, security, and cloud teams to ensure secure connectivity.
• Monitoring and configuring networking components like VPC, Security Groups, Route Tables.
• Manage and maintain Firewalls and VPN.
• Responding to network-related incidents and service requests.
• Document all configurations, procedures and changes.

Requirements:

• Familiarity with AWS networking services, ITIL processes (Incident, Change, Problem Management) and AWS Cloud platform.
• Team Player, excellent in documentation documentation, and communication skills.
• Certification in ITIL, AWS/Microsoft AZURE/Google cloud and Network preferred.

We respect your privacy and all communication will be treated with confidentiality.

Applicants who are not shortlisted may be considered for other similar positions.

If you have meet the job requirements that we are looking for or wish to find out more on this role, please contact us or apply in-confidence to us with you updated MS Word Resume to :

Kelvin (Reg. No. R )

STAR CAREER CONSULTING PTE LTD (EA License: 20C0353)

Job Summary:

As a member of the Infrastructure Shared Services team, the Network Administrator will play a key role in managing, supporting, and maintaining network infrastructure across a global footprint of 600+ remote locations in Europe, Asia, the US, Latin America, and Canada. This role involves both operational support and project-based work, contributing to the deployment and lifecycle management of network and security solutions.

Key Responsibilities:

Primary Responsibilities:

• Maintain and support existing and new network infrastructure and security solutions in accordance with support processes.
• Build, deploy, and administer/manage WAN, LAN, WLAN, and network services (e.g., NLB).

• Provide senior-level operational support for:

• Troubleshooting, incident resolution, and problem management.

• Reporting on activity, performance, and quality of network platforms and security solutions.
• Documentation of procedures and support materials.
• Assist in the implementation of new network and security infrastructure components.
• Ensure stability, responsiveness, and lifecycle consistency across network platforms and security solutions.

Secondary Responsibilities:

• Contribute to the evaluation and qualification of new network and security solutions.
• Provide expert recommendations to senior technical teams.

Required Technical Skills:

• Preferably CCNP certified.
• Strong experience in LAN/WAN/WLAN administration and troubleshooting.
• Proficient in routing protocols (BGP, RIP, OSPF, EIGRP).
• Knowledge of LAN technologies (VRRP, VSS, STP).
• Understanding of QoS mechanisms.
• Experience with Wi-Fi controllers and access points.
• Load Balancer administration (Citrix NetScaler).
• Security administration with Palo Alto and Fortinet firewalls, Pulse remote access, and reverse proxy.
• Preferably Palo Alto certified.

Preferred Technical Skills:

• Familiarity with infrastructure solutions (servers, storage).
• Knowledge of ITIL framework.
• Experience with WAN compression and optimization appliances (Riverbed).
• Telephony and voice infrastructure administration (primarily Cisco).

Behavioral & Professional Competencies:

• 3–7 years of experience in infrastructure, with 3–5 years specifically in network administration.
• Strong knowledge of Cisco network products, Palo Alto, and Riverbed.
• Self-motivated and eager to learn.
• Excellent communication skills, both verbal and written.
• Fluent in English (French reading ability is a plus).
• Strong analytical and problem-solving skills.
• Customer service-oriented mindset.
• Willingness to travel as needed.
• Team player with the ability to collaborate across departments.

Technical Environment:

• Cisco networking and telephony products.
• Citrix NetScaler (NLB and reverse proxy).
• Palo Alto and Fortinet firewalls, Panorama Central Management.
• Infoblox DNS.
• Riverbed WAN optimization and NetFlow (Cascade).
• SolarWinds monitoring.
• CA Service Desk Manager (ticketing and CMDB).
• SD-WAN (Velocloud).

Networking:

• LAN/WAN/WLAN administration and troubleshooting
• Routing protocols: BGP, OSPF, EIGRP
• VLAN configuration, STP, VRRP, QoS, EtherChannel

Firewall & Security:

• Administration of Palo Alto, Fortinet, Reverse Proxy
• VPNs, NAT, App-ID, HA configuration
• Threat prevention and SIEM integration

Monitoring Tools:

• SolarWinds (NPM, NTA, NetFlow) – setup, dashboards, alerting
• SNMP, syslog configuration for telemetry and alerts
• Custom dashboard creation and proactive monitoring

Automation & DevOps:

• Python, Ansible, PowerShell scripting
• Configuration management (e.g., Git)
• Network provisioning automation (Terraform preferred)

DNS & IP Management:

• Infoblox: DNS/DHCP management, IPAM, grid sync, API integration
• DNSSEC, failover, record updates (A, PTR, MX, CNAME)

SD-WAN & Cloud Integration:

• Design and implementation of SD-WAN overlays
• Integration with Azure, AWS, GCP
• Traffic steering, dynamic path selection, cloud routing

Reporting & Documentation:

• Real-time monitoring dashboards
• SLA/uptime reporting and incident summaries
• SOP and Visio documentation

• Knowledge of ITIL-aligned incident, problem, and change management
• Storage and backup familiarity: NetApp, Veeam, Commvault (a plus)
• Network compliance: ISO 27001, NIST, GDPR

• 2–5 years in infrastructure; 2–5 years as Network Administrator
• Strong knowledge of Cisco, Palo Alto, Infoblox, and Azure Firewall
• Highly motivated, team-oriented, and customer service focused
• Excellent communication in English (French reading is a plus)
• Ability to analyze and synthesize technical and business constraints

• SolarWinds, Cisco, Palo Alto, Infoblox, Azure/AWS
• VMware, NetFlow, SNMP, Terraform, Python, Ansible, PowerShell