Senior Network Engineer

Mission Technologies, a division of HII

Senior Network Engineer managing enterprise and data center network environments for critical government programs. Designing and optimizing security-focused networking solutions in national defense.

Posted 6/22/2026full-timeSpringfield • Virginia • 🇺🇸 United StatesSenior💰 $102,160 - $155,000 per yearWebsite

Tech Stack

Tools & technologies

FirewallsTypeScript

About the role

Key responsibilities & impact

Designing, deploying, and optimizing Enterprise and data center network environments
Translating requirements into network solutions, modifications, and support upgrades (network reconfigurations, hardware and software acquisitions, installation, testing)
Supports the planning, development, and integration, and transition to O&M
Developing and maintaining documentation of network systems, subsystems, and components in the networking portfolio (i.e., as-built documentation, capacity planning, etc.)
Exploring, researching, investigating, analyzing, and assessing new technologies to modernize and improve on existing network solutions

Requirements

What you’ll need

7+ years of hands-on experience administering or engineering Enterprise networks
Demonstrated experience leading the employment of network engineering techniques, methodologies, processes, and practices to design, engineer, implement, test, secure, and deliver a variety of enterprise-grade IT networking solutions
Experience with secure Enterprise information systems, circuits, configurations, and protocols and associated security appliances (encryptors, firewalls, etc.)
Experience with network traffic flow analysis, network management, network topologies, network security, performance, high availability, load balancing, and fault tolerant architectures
Conducting advanced troubleshooting to quickly identify and resolve degraded entities while maintaining a secure posture
Must meet DoD 8140/CSWF for 652-Intermedediate or be willing to obtain the appropriate credential within 6 months
TS/SCI clearance required with ability to obtain a CI Poly
Engineer Network 3: 5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in related field; 0 years experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 9 years relevant experience.
Engineer Network 4: 9 years relevant experience with Bachelors in related field; 7 years relevant experience with Masters in related field; 4 years relevant experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 13 years relevant experience.

Benefits

Comp & perks

best-in-class medical, dental and vision plan choices
wellness resources
employee assistance programs
Savings Plan Options (401(k))
financial planning tools
life insurance
employee discounts
paid holidays and paid time off
tuition reimbursement
early childhood and post-secondary education scholarships

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

network engineeringnetwork designnetwork implementationnetwork testingnetwork securitynetwork traffic flow analysisload balancingfault tolerant architecturesadvanced troubleshootingcapacity planning

Soft Skills

leadershipcommunicationproblem-solvinganalytical skillsorganizational skills

Certifications

DoD 8140/CSWFTS/SCI clearanceCI Poly