Duration: Contract – Part-time (2 days per week for 6 months). Working Flexibility: Onsite – Perth only Role Overview NTT Data is seeking an experienced Network Security Engineer to support a large enterprise environment following a recent firewall migration. This role will focus on the day-to-day operation, policy management, and optimisation of a Palo Alto firewall estate, with a strong emphasis on operational stability in a live production environment. You’ll work closely with stakeholders to ensure the security platform is performing optimally post-implementation. Key Responsibilities Support day-to-day operations of enterprise-grade Palo Alto firewalls Manage and optimise firewall policies in a production environment Work with Strata Cloud Manager (SCM) for configuration and visibility Assist with post-migration stabilisation and optimisation activities Troubleshoot network security incidents and performance issues Collaborate with internal teams to ensure secure and reliable network operations Skills & Experience Strong hands‑on experience with Palo Alto firewalls in enterprise environments Practical exposure to Strata Cloud Manager (SCM) Solid understanding of network security principles and best practices Good working knowledge of routing and switching fundamentals Proven ability to operate confidently in live production environments Strong communication skills and a collaborative mindset Questions? Reach out: #J-18808-Ljbffr