Senior Network Engineer

Arcfield was purpose-built to protect the nation and its allies through innovations in digital transformation, space mission engineering and launch assurance, miniaturized sensors and satellites, advanced modeling and simulation, cybersecurity, and conventional and hypersonic missile support. Headquartered in Chantilly, VA with 16 global offices, Arcfield employs more than 1,500 engineers, analysts, IT specialists, and other professionals with more than 60 years of collective proven experience supporting missions in cyber and space defense, space exploration, hypersonic and nuclear deterrence and warfighter readiness. Visit arcfield.com for more details.

Arcfield is seeking a Senior Network engineer. The key responsibilities are listed below.

Key Responsibilities:

• Designs, implements, and maintains the organization's local area network (LAN), wide area network (WAN), and wireless networks
• Configures and manages network equipment such as routers, switches, firewalls, load balancers, and VPN devices
• Implements network security measures including access controls, intrusion detection/prevention, and encryption
• Monitors network performance and troubleshoots issues to maintain high availability and reliability
• Oversees the deployment of new network technologies and upgrades to existing infrastructure
• Develops and documents network architecture, standards, and best practices
• Provides technical leadership and mentoring to junior network engineers and IT support staff
• Collaborates with other IT teams (systems, security, infrastructure) to ensure seamless integration
• Maintains thorough knowledge of network protocols, topologies, and emerging networking trends
• Researches, tests, and recommends new network hardware, software, and services
• Assists with capacity planning, budgeting, and vendor management for network projects
• Ensures network documentation, diagrams, and knowledge base are up-to-date
• Participates in on-call rotation and responds to after-hours network emergencies
• Occasional travel (10-20%)

• Bachelor's degree in Computer Science, Information Technology, or a related field
• 8+ years of progressive experience as a network engineer or administrator (BS 8-10, MS 6-8, PhD 3-5)
• Must possess and have the ability to maintain an active TS/SCI clearance with poly
• Expert-level knowledge of routing protocols (OSPF, BGP, EIGRP), switching, firewalls, and VPNs
• Strong understanding of LAN/WAN technology, network security, and network management principles
• Hands-on experience with major enterprise network hardware/software vendors (Cisco, Juniper, etc.)
• Proficient with network monitoring, troubleshooting, and performance optimization tools
• Ability to design and document complex network architectures and solutions
• Strong problem-solving, analytical, and communication skills
• Excellent interpersonal skills to work collaboratively with cross-functional teams
• Industry certifications (CCNP, JNCIA, CISSP, etc.) required

EEO

Arcfield proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active-Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.