Senior Network Security Engineer

Gotham Technology Group is seeking a Senior Network Security Engineer to design, implement, and maintain secure network infrastructure. The role focuses on advanced network security, firewalls, and Zero Trust principles to protect against modern cyber threats.

Responsibilities:

• Design, implement, and manage secure network security infrastructure with emphasis on firewall enforcement, segmentation, and least-privilege access
• Lead firewall configuration, optimization, and lifecycle management (primarily Check Point, plus Forcepoint, Imperva)
• Build and maintain Zero Trust defenses, including micro-segmentation (Illumio), identity-aware access (Cisco ISE, Entra ID), and threat prevention tools
• Collaborate closely with SOC to integrate network security controls, align on threat intelligence, and support incident response
• Lead security-focused network projects from planning through implementation and documentation
• Evaluate and recommend advanced security technologies, tools, and processes
• Manage upgrades, patches, configurations, and detailed documentation (diagrams, policies)
• Ensure compliance with industry standards and regulatory requirements
• Engage vendors/partners to enhance security posture and stay current on best practices

Requirements:

• Expertise in network security engineering and Firewalls
• Strong experience with Illumio micro-segmentation and Zero Trust implementations
• Proficiency in network protocols (TCP/IP, BGP, OSPF, MPLS, SD-WAN) and security technologies (firewalls, IDS/IPS, VPN)
• Azure cloud networking and security experience (VNet, Azure Security, Microsoft Defender, Entra ID)
• Familiarity with Qualys, CyberArk, SolarWinds, Tufin
• Certifications: CCNP Security, CCIE Security, CISSP, or equivalent highly desirable
• Excellent troubleshooting, leadership, communication, and independent/team skills in fast-paced environments