Network Systems & Data Security Administrator

Network Security & Perimeter Infrastructure

• Administer, configure, and manage Cisco Firepower Firewalls and Cisco FMC for centralized policy management.
• Support and maintain Palo Alto firewalls including policy tuning, NAT, and traffic inspection.
• Manage Web Proxy (Broadcom Bluecoat) for secure internet access and URL filtering.
• Administer DDoS protection solutions (Arbor, Akamai) to ensure network resilience and availability.
• Configure and support F5 platforms including:

• APM (VPN Remote Access)
• ASM (Web Application Firewall)
• GTM (DNS / Traffic Management)
  • Ensure proper network segmentation, firewall rule optimization, and secure connectivity across environments.

Network Access Control & Identity Infrastructure

• Administer Cisco ISE (AAA Server) for authentication, authorization, and accounting.
• Manage ForeScout NAC for device visibility and network admission control.
• Support OneIdentity (IAM & MFA) and Microsoft Azure MFA for secure authentication mechanisms.
• Administer Privileged Access Management (Delinea) to secure privileged accounts.
• Manage Microsoft Certificate Authority (CA) for certificate issuance, renewal, and lifecycle management.

Endpoint, Server & Core Security Systems

• Administer Endpoint Protection platforms (Symantec Endpoint Protection, Microsoft Defender).
• Manage File Integrity Monitoring (ChangeTracker) for critical systems.
• Support secure configuration and hardening of servers, endpoints, and network devices.
• Administer Email Security Gateway (Symantec Messaging Gateway).

Vulnerability & Infrastructure Security Management

• Administer vulnerability management tools including Qualys and Tenable Nessus.
• Perform regular vulnerability scans across network, systems, and applications.
• Coordinate patching and remediation with infrastructure and application teams.
• Maintain baseline security configurations and ensure compliance with hardening standards.

Data & Application Security (Infrastructure Perspective)

• Support implementation of Microsoft DLP and Microsoft Purview (Data Classification) from an infrastructure integration standpoint.
• Administer Web Application Firewall (F5 ASM) and support application security tools (Checkmarx, SecureEyes) in coordination with development teams.
• Manage Database security controls (Imperva) to protect critical data assets

• 5+ years of experience in network security, cybersecurity operations, or security administration roles.
• Hands-on experience administering multiple security tools, including:
• Firewalls: Cisco Firepower, Palo Alto
• WAF/VPN/DNS: F5 (ASM, APM, GTM)
• DDoS Protection: Arbor, Akamai
• IAM/PAM: OneIdentity, Delinea, Azure MFA
• Vulnerability Management: Qualys, Nessus
• Endpoint & Email Security: Symantec, Microsoft Defender
• Strong understanding of networking concepts (TCP/IP, DNS, VPN, routing, switching).
• Experience with security integrations across SIEM, SOAR, IAM, and endpoint tools.
• Familiarity with threat intelligence platforms and incident response processes.
• Ability to manage complex multi-vendor environments and troubleshoot integrations.
• Experience with scripting/automation (PowerShell, Python) is a plus.
• Excellent analytical, problem-solving, and communication skills.
• Perform end-to-end administration, configuration tuning, patching, and upgrades of security platforms.