Enterprise Network Admin: Security, HA & WAN (3-Month Contract)

NTT DATA, Inc.; Sydney; On-site; AUD 70,000 - 110,000; Full time

Job summary

NTT DATA, Inc. is seeking an experienced Network Administrator for a 3-month contract based in Sydney CBD. The role focuses on maintaining and securing complex enterprise networks, delivering reliable connectivity, and supporting ongoing infrastructure upgrades.

The successful candidate will have hands-on experience with Cisco, Arista, Palo Alto, and VPN solutions, with a track record of high availability and strong troubleshooting skills in a fast-paced environment.

Qualifications

• Strong hands-on experience with enterprise network infrastructure and security.
• Experience designing and implementing secure, scalable network solutions.
• Proven ability to troubleshoot complex network incidents and outages.

Responsibilities

• Administer and support enterprise network and communications infrastructure.
• Monitor network performance, availability, and capacity.
• Troubleshoot and resolve network incidents and outages.
• Manage network security platforms and connectivity services.
• Design and implement scalable, secure network solutions.
• Support infrastructure upgrade and refresh projects.
• Coordinate with internal stakeholders and technology vendors.
• Drive continuous improvement and operational excellence.

Skills

Cisco Catalyst & Nexus

Arista Switching

Cisco Wireless Controllers

Palo Alto Firewalls

GlobalProtect VPN

Certificate Management / PKI

Network Monitoring

Security Operations

High Availability

Troubleshooting

Job description

NTT DATA, Inc. is seeking an experienced Network Administrator for a 3-month contract based in Sydney CBD. The role focuses on maintaining and securing complex enterprise networks, delivering reliable connectivity, and supporting ongoing infrastructure upgrades.

The successful candidate will have hands-on experience with Cisco, Arista, Palo Alto, and VPN solutions, with a track record of high availability and strong troubleshooting skills in a fast-paced environment.