Senior Network Security Engineer

Location: Sydney, Australia (50% office attendance required)

Employment Type: Contract (Full Time)

Duration: Initial 6 months contract with potential extension

Overview

Join a leading Enterprise Services technology team driving innovation across large‑scale, mission‑critical environments. The Network Security Engineering function is central to delivering secure, resilient network infrastructure that supports multiple business units and high‑profile digital products.

As a Senior Network Security Engineer, you will design, engineer, and support advanced network solutions that enable business value and operational stability across multiple portfolios. You will collaborate with diverse engineering squads spanning cloud networking, network automation, and workforce connectivity.

Key Skills & Experience To be successful in this role, you will have demonstrated experience in:
Cisco routing and switching technologies
BGP, OSPF,



VLANs, VRFs, and network segmentation
Cisco ACI, APIC, and Nexus platforms
Cisco ASA firewalls and security technologies
F5 LTM/GTM load balancing solutions (or equivalent technologies)
VPN, firewall, and secure network connectivity solutions
Network automation and Infrastructure-as-Code tools and methodologies
Enterprise network troubleshooting across complex environments
Change management, rollback planning, risk assessment, and technical documentation

Desired Qualifications
Cisco certifications such as CCNP, CCIE, or equivalent
Experience working within large enterprise or highly regulated settings
Robust stakeholder engagement and communication skills
Ability to work independently and collaborate across multidisciplinary technical teams

📌 Senior Network Engineer Sydney (Australia)
🏢 Ntt Data
📍 Australia