Senior Network Engineer – Classified IT (On‑Site)

Lockheed Martin; Orlando (FL); On-site; USD 85,000 - 158,000; Full time

Benefits offered by this job

Medical, Dental, Vision

Flexible work arrangements (e.g., 4x10

401(k) match

Paid time off

Parental Leave

EAP

Education Assistance

Life Insurance

Short-Term Disability

Long-Term Disability

Job summary

Lockheed Martin is seeking an experienced Network Engineer to join the Classified IT Center of Excellence in a fast-paced, on-site role in the Orlando area. You will design network architectures, implement security controls, and coordinate with stakeholders to resolve incidents and update documentation.

The position requires DoD eligibility, an active clearance, and IAT certifications. Expect routine upgrades, vulnerability management, and hands-on work across a range of network technologies

Qualifications

• US Citizenship required.
• Active DoD Clearance.
• Must be willing to attain and maintain SAP access.
• Active DoD 8570 IAT Level II or III certifications (Security+, CISSP, CASP).
• 3+ years of Network Admin or System Admin experience (including VoIP), installations, configuration, and troubleshooting.
• Experience with network virtualization concepts.
• Firewall experience (Preferably Palo Alto).

Responsibilities

• Designs and plans network systems; provides specifications and schematics for network architecture and hardware/software selection.
• Perform routine updates, major upgrades, patching, and vulnerability scanning.
• Maintain asset inventory and ensure hardware/software lifecycle compliance.
• Enforce LockheedMartin and DoD policies, including STIG and RMF requirements.
• Implement security hardening and remediate findings.
• Provide timely resolution of infrastructure issues (hardware, software, networking).
• Update tickets and Confluence pages; ensure traceability to requirements or incidents.
• Coordinate with stakeholders to verify resolution and close tickets promptly.
• Design and implement innovative technical solutions to complex problems.
• Support classified customer demonstrations and lab testbeds; ensure readiness and performance.
• Document system configurations, procedures, and lessons learned.
• Mentor junior staff and contribute to knowledge-base growth.
• Participate in a 24x7 on-call rotation; work off-shift hours and weekends.
• Work onsite full-time with occasional travel to other LockheedMartin facilities or customer sites.

Skills

Network Admin

VoIP Admin

Network virtualization

Firewall experience

Python scripting

NSX-V

NSX-T

Cisco ACI

SD-WAN

Identity Management

Ansible Tower

NIST RMF familiarity

SNMP

CCNA

CCNP

PCNSA

Windows Server administration

Education

Active DoD Clearance

Active DoD 8570 IAT Level II or III certifications (Security+, CISSP, CASP)

Tools

Palo Alto Firewall

SolarWinds

SNMP

TACLANE/GEMONE

Job description

Lockheed Martin is seeking an experienced Network Engineer to join the Classified IT Center of Excellence in a fast-paced, on-site role in the Orlando area. You will design network architectures, implement security controls, and coordinate with stakeholders to resolve incidents and update documentation.

The position requires DoD eligibility, an active clearance, and IAT certifications. Expect routine upgrades, vulnerability management, and hands-on work across a range of network technologies