IT Specialist – Network & Perimeter Security

Sanford, FL
Full Time
PSO
Experienced

Title: IT Specialist – Network & Perimeter Security

Location: On-site – Sanford, FL (Travel to DeLand and local field sites required)

Description

Solutions³ LLC is supporting their State Government customer on a mission-critical sustainment program to provide administrative and operational support of their Firewalls, Web Filtering, Server Administration, Security, Administration, and other special programs.
The Network & Perimeter Security Specialist will be responsible for managing firewall systems, network infrastructure, and web filtering platforms to ensure secure, compliant access across the enterprise. This role serves as the front line of infrastructure protection and availability.

Responsibilities

Network Infrastructure Management
  • Configure and maintain enterprise network devices (routers, switches, firewalls, load balancers, wireless access points).
  • Implement network segmentation, VLANs, and access control policies to enforce least privilege.
  • Monitor and optimize network performance using tools such as SolarWinds and Wireshark.
  • Plan and support WAN and LAN infrastructure including VPN access and remote connectivity.
  • Maintain up-to-date network diagrams, device inventories, and configuration backups.
Firewall & Perimeter Security Operations
  • Configure, monitor, and maintain firewall systems (e.g., Fortinet, Palo Alto, Cisco ASA/Firepower).
  • Analyze firewall logs and alerts for anomalous behavior or unauthorized access attempts.
  • Design and maintain security zones (DMZ, internal, guest, remote) and access control lists (ACLs).
  • Support remote access configurations (SSL VPN, IPsec tunnels) and user-based access restrictions.
Security Administration
  • Analyze traffic for signs of intrusion, scanning, or denial-of-service attacks.
  • Collaborate with Security Operations Centers (SOCs) or SIEM platforms for event correlation.
  • Manage RADIUS authentication systems integrated with Active Directory for secure user access control.
  • Support the State Law Enforcement Radio System (SLERS) clearance process and ensure all security policies are upheld.
  • Respond to Tier 3 escalation for complex network or security issues.
  • Manage and support the D5-ITS/TSMO user base including onboarding, offboarding, and periodic access reviews.
  • Collaborate with IT security and operations teams to ensure alignment with CJIS, SLERS, and FDOT security requirements.
Compliance & Documentation
  • Enforce compliance with SLERS, CJIS, NIST 800-53, and organization-specific security policies.
  • Conduct or support network security audits and vulnerability assessments.
  • Create and maintain documentation for network topology, firewall rule sets, and security incidents.
  • Assist with Plan of Action & Milestones (POA&Ms) related to network findings.
Change Management & Support
  • Participate in IT change advisory boards (CAB) and follow formal change control processes.
  • Conduct periodic configuration reviews and change log audits.
  • Support DR testing and recovery operations related to network continuity.

Required Qualifications

  • U.S. Citizenship is required.
  • Must be eligible for SLERS and CJIS background clearance.
  • DoD Secret or DoD Top Secret of equivalent preferred, but not required
  • Minimum of 5 years of hands-on experience in enterprise network and perimeter security roles.
  • Demonstrated experience configuring and managing Fortinet firewalls (experience with Cisco ASA or Palo Alto is a plus).
  • Experience with FortiGate firewall administration, including logging, rule management, and VPN configuration.
  • Proficient in using SolarWinds or equivalent tools for network and infrastructure monitoring.
  • Strong understanding of TCP/IP, DNS, DHCP, VLANs, and VPN technologies.
  • Hands-on experience administering web filtering platforms, such as Zscaler, Cisco Umbrella, or Palo Alto PAN-DB.
  • Familiarity with Active Directory and RADIUS authentication systems.

Desired Skills

  • Experience with SIEM tools and Zero Trust network architectures.
  • Familiarity with additional SolarWinds applications or other NMS tools.
  • Basic scripting (Python, PowerShell) for automation.
  • ITIL® v3 or v4 Foundation certification (or higher-level ITIL certification).
  • Working knowledge of the NIST Cybersecurity Framework (CSF) and how it applies to operational environments.
  • Familiarity with NIST SP 800-53, including the Informative References and control families related to Access Control (AC), System & Communications Protection (SC), and Audit & Accountability (AU).
  • Experience working in change-controlled environments with defined CAB processes and configuration baselines.
  • Ability to write or contribute to technical documentation, SOPs, or POA&Ms.
  • Familiarity with Atlassian Jira for workflow tracking, access request processing, or change management.
  • Experience working in or supporting state or municipal government IT environments.
  • Understanding of Zero Trust architecture and modern perimeter defense models.

Required Education:

Bachelor’s degree in Computer Science, IT, Networking, or Cybersecurity (or equivalent experience).

Desired Certifications

  • Fortinet NSE 4+ or PCNSA/PCNSE
  • CompTIA Network+ or CCNA
  • CompTIA Security
  • ITIL® Foundation (v3 or v4)+
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