Firewall / Network Security Engineer - Hybrid (Dallas/Houston TX) at AECOM2

We are seeking a skilled and motivated Firewall & Network Security Engineer with hands-on experience supporting Palo Alto Networks Next-Generation Firewalls (NGFWs) and Prisma Access to join our Cybersecurity Engineering department. The successful candidate will collaborate closely with internal cybersecurity, infrastructure, and architecture teams, as well as an outsourced service provider, to ensure the secure design, implementation, and operation of firewall and network security technologies in a multi-datacenter, global enterprise environment supporting over 50,000 onsite and remote users. The ideal candidate is comfortable operating firewall environments end-to-end, troubleshooting complex issues, and partnering across infrastructure and cloud teams to deliver secure, scalable solutions. This role offers opportunities for cross-training across other areas of the Cybersecurity Engineering department, enabling professional growth and broader exposure to enterprise security technologies. Experience across broader network and security disciplines, including routing, switching, and load balancers, is preferred. This position offers flexibility for a hybrid work schedule, combining in-office and virtual work, and must be based in Dallas or Houston, TX. Responsibilities: • Own the firewall access request and approval process, including security and NAT policies and device configurations, while collaborating under the guidance of the senior Network Cybersecurity Engineer • Design, implement, and manage security policies, including App-ID, User-ID, Content-ID, and URL filtering • Manage the full firewall rule lifecycle, including creation, validation, optimization, cleanup, and periodic reviews • Participate in device configuration and security reviews for firewalls to ensure alignment with security standards, best practices, and architectural requirements • Lead the identification, assessment, and remediation of Palo Alto security advisories and vulnerabilities, ensuring network protection and compliance • Oversee day-to-day firewall and network security operations in partnership with a third-party managed security service provider (MSSP), providing technical guidance, oversight, and escalation support as needed • Partner with the IT Infrastructure networking team to strengthen security and operational processes across enterprise networking technologies, including F5 load balancers and Cisco routing and switching, ensuring alignment with security standards and best practices • Provide subject matter expertise to the Cybersecurity Architecture team on the deployment of Palo Alto and other network devices • Drive continuous improvements to processes, environments, and overall security posture, ensuring operational efficiency and risk reduction • Participate in cross-training opportunities within the Cybersecurity Engineering department to develop broader skills across enterprise security technologies and network operations