Senior Network Engineer

• Configure, maintain, and troubleshoot enterprise LAN, WAN, wireless, VPN, firewall, DNS, and secure network infrastructure.
• Execute network changes, switch cutovers, routing updates, firewall/security changes, and connectivity improvements.
• Support campus, data center, colocation, carrier, ISP, and secure-environment network operations.

• Administer Cisco switching, wireless, security, and related enterprise networking platforms.
• Troubleshoot site-to-site VPNs, routing issues, latency, packet loss, DNS behavior, firewall behavior, and service-connectivity problems.
• Support network access-control workflows, including Cisco ISE, TACACS+, RADIUS, and device-administration policies.

• Coordinate Cisco TAC, carrier, ISP, and vendor support cases through resolution.
• Follow formal change-management practices, including implementation plans, test plans, risk analysis, backout plans, and maintenance-window coordination.
• Maintain accurate network diagrams, change records, implementation notes, operational runbooks, and troubleshooting documentation.

• Able to work on-site in Reston, VA
• Eligible to obtain and maintain a U.S. security clearance
• Willing and able to work in classified, secure, or compliance-bounded environments
• Able to support occasional after-hours and weekend maintenance or emergency response
• 7+ years of hands-on enterprise networking experience
• 5+ years supporting Cisco enterprise networking platforms
• Experience with switching, routing, VLANs, wireless, VPNs, DNS, firewalls, and network security operations
• Experience troubleshooting site-to-site VPNs, routing, latency, packet loss, DNS, and service-availability issues
• Experience supporting secure, classified, regulated, government, defense, or security-controlled infrastructure
• Experience following formal change-management, testing, backout, and documentation practices
• Ability to coordinate across network, systems, cybersecurity, helpdesk, vendor, and program teams

• Active U.S. security clearance
• Experience with Cisco ISE, TACACS+, RADIUS, or network access-control policy administration
• Experience with TACLANE, encrypted transport, secure enclave networking, or air-gapped environments
• Experience with Cisco firewall/security platforms or enterprise firewall policy troubleshooting
• Experience with Active Directory, Entra ID, ADFS, SSO, claims, UPN/email hygiene, or ServiceNow identity integrations
• Working familiarity with virtualization or platform environments such as VMware, Nutanix, Hyper-V, Linux, storage, or backup systems
• Experience in defense contracting, government programs, CMMC, NIST 800-171, or other compliance-driven environment

Position Location: Reston, VA (the selected individual will be expected to work onsite in the Reston, VA office)

• Medical, Dental and Vision Insurance
• Accompanying FSA and HSA options

• 9 Observed Holidays and 2 Floating Holidays

• Military Leave
• Tuition Reimbursement

• Profit Sharing
• 401(k) Traditional and Roth Options
• Gym and Fitness Reimbursement

Metron is an Equal Employment Opportunity (EEO) employer.

It is the policy of the company to provide equal employment opportunities to all qualified applicants without regard to race, color, religious, sex, sexual orientation, gender identity, national origin, age, protected veteran or disabled status, or genetic information.