Senior Network Security Engineer

Role Overview

The Network Security Team is seeking a Sr. Network and Firewall Security Engineer to secure and operate connectivity across global offices and data centers. This is a hands-on role requiring deep expertise in Palo Alto firewalls, including design, deployment, migration, and ongoing optimization of security policies in complex enterprise environments.

Responsibilities

• Design, deploy, and migrate Palo Alto firewall solutions across global environments, including architecture of security policies, segmentation, SSL decryption, and centralized management
• Lead complex security and network integrations by applying strong core networking principles (BGP, OSPF, routing design, failover, traffic engineering) to ensure resilient, high-performance connectivity
• Partner with network, cloud, and infrastructure teams to design and implement secure, scalable connectivity across on-prem and hybrid environments
• Serve as a senior escalation point, driving advanced troubleshooting across firewalls and underlying network infrastructure, including deep packet, flow, and session-level analysis
• Support network security operations and incident response, diagnosing complex connectivity issues involving routing, NAT, policy enforcement, and application behavior
• Mentor engineers and NOC staff, reinforcing strong networking fundamentals, structured troubleshooting, and operational best practices
• Manage and prioritize work intake while delivering clear, direct communication to both technical stakeholders and senior leadership
• Evaluate and recommend enhancements to security architecture, firewall capabilities, and network design to continuously improve reliability and security posture

Qualifications

• 7+ years of network and security engineering experience across enterprise routing, switching, and firewall platforms, with strong foundations in secure connectivity and network design
• 5+ years of hands-on experience managing Palo Alto firewalls, including SSL decryption, security profiles, and Panorama-based centralized management (required)
• Strong, demonstrated experience designing and troubleshooting complex network and security environments, including routing protocols (BGP, OSPF), NAT, and packet-level analysis in production environments
• Deep understanding of TCP/IP, traffic flows, and structured troubleshooting methodologies across network and security domains
• Strong understanding of network security design principles, including segmentation, access control, and secure architecture patterns (zone-based design, microsegmentation, zero-trust concepts)
• Experience leading firewall migrations and contributing to enterprise network security architecture
• Experience with scripting or API-driven automation to improve operational efficiency

Preferred Qualifications

• Experience across additional enterprise networking platforms and edge technologies, including Arista or similar environments, proxy platforms, load balancers (e.g., F5), and multi-vendor infrastructure
• Experience with cloud networking and security, including AWS networking constructs and security controls, as well as edge security platforms such as Cloudflare or similar services
• Familiarity with modern application and container networking models, including Kubernetes networking, segmentation, and network policies
• Experience participating in or leading multi-vendor infrastructure migrations in large-scale environments

Benefits And Perks

• Fair and competitive salary and incentive compensation packages with an upside for overachievement
• Generous paid time off, including vacation, personal days, sick days and annual community service days
• Health, dental and vision benefits, including access to telemedicine and mental health services
• 2:1 401(k) match, up to 8% match immediately upon hire
• Discounted Employee Stock Purchase Plan
• Tax Savings Accounts for health, dependent and transportation
• Employee referral bonus program
• Volunteer opportunities to help you give back to your communities

About Cboe Global Markets

We value the total wellbeing of our people – including health, financial, personal and social wellness. We believe standard benefits like health insurance and fair pay are a given at any organization. Still, you should know we offer:

• Fair and competitive salary and incentive compensation packages with an upside for overachievement
• Generous paid time off, including vacation, personal days, sick days and annual community service days
• Health, dental and vision benefits, including access to telemedicine and mental health services
• 2:1 401(k) match, up to 8% match immediately upon hire
• Discounted Employee Stock Purchase Plan
• Tax Savings Accounts for health, dependent and transportation
• Employee referral bonus program
• Volunteer opportunities to help you give back to your communities

Equal Employment Opportunity

We're proud to be an equal opportunity employer do not discriminate against any employee or applicant for employment based on any legally protected characteristic, including race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, or Veteran status. We are committed to fostering a workplace where all individuals are valued and respected.