Senior Network Security Engineer - Patch & Vulnerability

Via Logic LLC; Arlington (VA); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking a Network Engineer to lead vulnerability management and STIG compliance for NMCI network infrastructure. You will own patch strategy, approve deployments, and ensure 72-hour SLA compliance across 40+ solution types and thousands of devices.

The role demands DoD/STIG expertise, DoD audit readiness, and the ability to mentor engineers while reporting to senior leadership. Active Secret clearance and US citizenship are required.

Qualifications

• Requires B.S. degree and 8–12 years network security and vulnerability management experience.
• U.S. Citizen with 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.

Responsibilities

• 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.

Skills

Network security

Vulnerability management

F5

Cisco

Firewalls

Enterprise network infrastructure

DoD STIG compliance

Audit experience

CISSP

CCNP

Education

B.S. Degree

Job description

Leidos is seeking a Network Engineer to lead vulnerability management and STIG compliance for NMCI network infrastructure. You will own patch strategy, approve deployments, and ensure 72-hour SLA compliance across 40+ solution types and thousands of devices.

The role demands DoD/STIG expertise, DoD audit readiness, and the ability to mentor engineers while reporting to senior leadership. Active Secret clearance and US citizenship are required.