Senior Network Administrator

Roles & Responsibilities

Job Summary:

Role: Senior Network Administrator

Start: ASAP

Duration: 6 months (renewable)

Location: Singapore

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.

Requirements:

- 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.

- Strong analytical and problem-solving skills.

- Customer service-oriented mindset.

- Willingness to travel as needed.

- Team player with the ability to collaborate across departments.

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).

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).

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).

- Assist in the implementation of new network and security infrastructure components.

- Ensure stability, responsiveness, and lifecycle consistency across network platforms and security solutions.

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.

Secondary Responsibilities:

- Contribute to the evaluation and qualification of new network and security solutions.

- Provide expert recommendations to senior technical teams.

Please send your application highlighting:

- Your relevant experience

- Current/expected salary

- Availability information

- A latest MS-WORD Resume

**We regret that only short-listed applicants will be contacted.**

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Note: GECO Asia is an Information Technology Consulting Services provider. We provide specialist IT and Digital Transformation specialist resources on a project (SOW) and/or permanent basis. We operate under a Comprehensive License offered by Ministry of Manpower, Singapore.

(GECO Asia Pte Ltd, License No. 07C4453)

(2 Venture Drive, #10-18 Vision Exchange, Singapore )

Tell employers what skills you have
Fortinet
Network Administration
Citrix
EIGRP
CCNP
Cisco
Networking
ITIL
VRRP
DNS

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