Principal Network Engineer – Government

AT&T

Principal Network Engineer providing managed IT support for TAC2O systems at AT&T. Responsible for design, implementation, and engineering support of network solutions for defense intelligence collection.

Posted 5/29/2026full-timeReston • Virginia • 🇺🇸 United StatesLead💰 $108,000 - $300,000 per yearWebsite

Tech Stack

Tools & technologies

Firewalls

About the role

Key responsibilities & impact

Perform network design and engineering support services for the ATIP Program IT architecture.
Solve complex Network issues.
Engineer, design, implement network solutions including LANs/WANs/Site-to-site, VPNs/Point-to-point/point to multipoint.
Serve as network systems engineer overseeing servers, storage and backup systems.
Troubleshoot port security issues, VLAN issues, and network outages.
Control network management activities, data flows, and firewall rules
Build network topologies to deliver content from specific providers to users
Answer technical questions; recommend and implement approved course of action
Design, implement or maintain networks for LAN and WAN systems
Provide engineering designs, and plans for installation, integration, testing, upgrade, analysis, and maintenance/expansion of the network environment
Prepare network engineering documentation ranging from requirements, conceptual planning, research and development efforts, complete system construction, to customization of existing network configurations and assist in communicating current operational status of networks
Assist in investigating, evaluating, and proposing new network systems and upgrades/modifications to existing resources that would increase capabilities, efficiency, reliability, and cost savings.
Assist in developing plans for integrating network systems to include implementation schedule, costing, and resource requirements
Perform network engineering studies on communication paths for deployed systems.
Perform studies to determine requirements for bandwidth, data throughput, security, and reliability
Maintain technical manuals and standard operating procedures
Develop/implement network communications paths for remote data sources

Requirements

What you’ll need

Experience with installation, configuration, and maintenance of Firewalls.
Current networking certifications
Understand the operation of network protocols and Firewall packet and proxy filters
Bachelor’s Degree from an accredited institute in an area applicable to this position and six years of relevant experience.
An additional four years of relevant experience may be substituted for the Bachelor’s Degree
Must presently be 8570 compliant (IAT Level 2 preferred); must be 8570 compliant (IAT Level 2) by date of security indoctrination with any necessary continuing education (CE) for certification
Cisco Certified Internetwork Expert (CCIE)
Cisco Certified Network Professional (CCNP) certification
Experience with multi-level security domains
Experience with Installation, configuration, and maintenance of GDIT TACLANE and other crypto devices
Experience with networks containing Radiant Mercury multi-level security appliances

Benefits

Comp & perks

Medical/Dental/Vision coverage
401(k) plan
Tuition reimbursement program
Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays)
Paid Parental Leave
Paid Caregiver Leave
Additional sick leave beyond what state and local law require may be available but is unprotected
Adoption Reimbursement
Disability Benefits (short term and long term)
Life and Accidental Death Insurance
Supplemental benefit programs: critical illness/accident hospital indemnity/group legal
Employee Assistance Programs (EAP)
Extensive employee wellness programs
Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

network designnetwork engineeringLANWANVPNfirewall configurationnetwork troubleshootingnetwork topologiesnetwork documentationbandwidth analysis

Soft Skills

problem solvingcommunicationtechnical supportplanningevaluationrecommendationintegrationmaintenanceorganizationcollaboration

Certifications

Cisco Certified Internetwork Expert (CCIE)Cisco Certified Network Professional (CCNP)8570 compliance (IAT Level 2)