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Senior Transport Network Engineer

Leidos
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Arlington County, Arlington, VA, USA
Aug 10, 2026

More About the Role:
Leidos is seeking a Network Engineer to lead vulnerability management and STIG compliance program for NMCI network infrastructure. Provide technical leadership, make authoritative patch deployment decisions, and ensure 72-hour SLA compliance across 40 solution types supporting thousands of production devices.

What You'll Get to Do:
•Own vulnerability management program strategy and execution.
•Approve/reject patch deployments based on lab validation results. 
•Lead quarterly STIG compliance assessments and audit preparation. 
•Engage vendors (F5, Cisco, Palo Alto, etc.) at executive/technical levels for escalations. 
•Mentor and develop mid-level and junior engineers.
•Report program status, risks, and metrics to senior leadership. 
•Lead emergency response to zero-day vulnerabilities and critical patches.
•72-hour patch SLA compliance (>90%).
•100% completion of quarterly STIG assessments (160/year). 
•Quality of patch approvals - accountable for production impact. 
•Team performance, development, and retention. 
•DoD/Navy audit readiness and compliance.

You'll Bring These Qualifications:
•Requires B.S. Degree and 8-12 years network security and vulnerability management experience; years of experience can be in lieu of degree.
•Must be a U.S. Citizen and possess an active Secret clearance.
•Expert knowledge of F5, Cisco, firewalls, and enterprise network infrastructure.
•DoD STIG compliance and audit experience. 
•Strong vendor relationship and escalation management skills. 
•CISSP, CCNP, or equivalent certifications preferred.

NGEN

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:

August 1, 2026

For 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 $92,300.00 - $166,850.00

The 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.

Job ID

R-00188601|loc3

Security Clearance

SECRET
About Leidos
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