KBR is seeking a Network Security Analyst to monitor, defend, and maintain secure network infrastructure supporting defense programs in Tampa Bay. Responsibilities include configuring and managing firewalls, IDS/IPS systems, and VPN solutions, conducting vulnerability assessments, responding to security incidents, and ensuring compliance with DISA STIGs and DoD security standards. The ideal candidate will have hands-on experience with Cisco, Palo Alto, or Juniper network security platforms and familiarity with zero trust architecture principles. Requires active Secret clearance, 4+ years of network security experience, and Security+ or CCNA Security certification. CISSP or CEH a plus.