Insider Threat Program Senior Network Engineer
LeidosThe Digital Modernization Sector at Leidos currently has an opening for a Senior Network Engineer supporting the HEITS Contract as part of the Department of Homeland Security (DHS) Insider Threat Program (ITP). This is an exciting opportunity to use your experience to support, sustain, design and evolve the network enterprise of the ITP. The ITP mission is to identify insider threats to the department by utilizing advanced analytics, monitoring, and data correlation which in turn help address and eliminate potential threat actors from compromising the DHS mission in safeguarding the homeland.
The selected candidate will be responsible for the following:
Serve as asubject matter expert for the ITP network infrastructure. This includes oversight of the High-Speed Guard Cross Domain solution, strategic planning for system recapitalization, and ensuring compliance with NIST/FISMA/STIG standards. The position also requires deep technical expertise across multiple platforms (Cisco, Palo Alto, VMware, Linux, Microsoft Server) and familiarity with complex security architectures and incident lifecycle management.
Basic Qualifications:
Masters with 15 – 20 years of prior relevant experience or Doctorate with 13 – 16 years of prior relevant experience.
Bachelor's Degree and additional years of experience and certifications will be considered in lieu of a Master's Degree.
Cisco Certified Network Professional (CCNP)
Experience Engineering, Deployment and operations of LAN and WAN Switches, and Firewalls ensuring seamless integration into existing network infrastructure
Working knowledge of defense-in-depth principles, network/HW/SW security architecture, network topology, IT device integrity, and common security elements
Installs, configures, and maintain equipment including Cisco network and FW gear Cisco 2900, 4500, 9300, 9400, 6800 and Nexus 9000, and Cisco Firepower, ASA.
Experience with and proven methods for managing the information security incident lifecycle, including incident response, mitigation, post-action reporting, and mapping a path forward.
Network Management experience with Solarwinds, or WhatsUP Gold, NetQoS, NetBrain
Cross platform familiarity and experience with VMWARE, Linux, Microsoft Server and AD.
Build firewall policy and optimized rule sets for improved efficiency and threat prevention.
Deploy new network configuration to meet NIST/FISMA/STIG compliance requirements
Support ATO reviews and Audits
Requires ability to communicate with senior executive
leadership (internally or client) regarding matters of strategic importance to the organization/project.
Ability to obtain DHS EOD SCI
Preferred Qualifications:
Proven experience (15+ years) in IT service delivery management
Experience with User Activity Monitoring products and platforms
Experience with Everfox High Speed Guard Platform
Experience with Cisco, Juniper LAN/WAN network infrastructure
Experience with Palo Alto Firewalls
Certified Information Systems Security Professional (CISSP)
Cisco Certified Network Professional (CCNP) - Security
Palo Alto Networks Accredited Configuration Engineer (ACE) - PAN-OS 7.0 Version
Proven experience (15+ years) in IT service delivery management
Experience with User Activity Monitoring products and platforms
Experience with Everfox High Speed Guard Platform
Experience with Cisco, Juniper LAN/WAN network infrastructure
Experience with Palo Alto Firewalls
Certified Information Systems Security Professional (CISSP)
Cisco Certified Network Professional (CCNP) - Security
Palo Alto Networks Accredited Configuration Engineer (ACE) - PAN-OS 7.0 Version
We’re not looking for perfectly polished resumes or perfect fits. We’re looking for people who break limits, ask hard questions, and don’t wait to be told what’s next. At Leidos, we’re not following the roadmap — we’re redrawing it.
Original Posting:
October 2, 2025For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range $134,550.00 - $243,225.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.