Senior Network Engineer — Insider Threat & Cross‑Domain

Leidos; United States; On-site; USD 139,100 - 251,450; Full time

Benefits offered by this job

Competitive compensation

Health and Wellness programs

Retirement

Job summary

Leidos is seeking a Senior Network Engineer to support the DHS Insider Threat Program (ITP). You will design, sustain, and evolve the ITP network, focusing on security, scalability, and reliability across LAN/WAN and cross-domain data transfers.

The role requires CCNP, 8+ years of experience (or 6+ with a Master's), and a strong background in network security, NIST/FISMA/STIG compliance, and incident response. On-site position with competitive pay and benefits.

Qualifications

• Bachelor's degree and 8+ years of experience or Master's with 6+ years of experience.
• CCNP certification.
• Experience deploying and operating LAN/WAN switches and firewalls.
• Knowledge of defense-in-depth, security architecture, and IT device integrity.
• Experience with Cisco gear (2900/4500/9300/9400/6800/Nexus 9000) and Cisco Firepower, ASA.
• Experience with security incident lifecycle management and incident response.
• Experience with network management tools (Solarwinds, WhatsUp Gold, NetQoS, NetBrain).
• Cross-platform familiarity with VMWARE, Linux, and Windows Server/AD.
• Ability to meet NIST/FISMA/STIG requirements and assist with ATO reviews.

Responsibilities

• Support the ITP network infrastructure and routine maintenance.
• Oversee cross-domain data transfer through High Speed Guard solution.
• Document configuration baselines and changes.
• Plan and support network recapitalization for capacity growth.
• Serve as SME for all ITP network infrastructure.

Skills

CCNP

LAN/WAN engineering

Firewall configuration

Security architecture

Security incident lifecycle

VMware/Linux/Windows/AD

Education

Bachelor's degree in a related field

Master's degree in IT/Engineering

Tools

Solarwinds

WhatsUp Gold

NetQoS

NetBrain

VMware

Linux

Microsoft Server

Active Directory (AD)

Job description

Leidos is seeking a Senior Network Engineer to support the DHS Insider Threat Program (ITP). You will design, sustain, and evolve the ITP network, focusing on security, scalability, and reliability across LAN/WAN and cross-domain data transfers.

The role requires CCNP, 8+ years of experience (or 6+ with a Master's), and a strong background in network security, NIST/FISMA/STIG compliance, and incident response. On-site position with competitive pay and benefits.