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# Senior Network Engineer

- **Company:** M9 Solutions
- **Location:** Springfield, VA, United States
- **Experience:** Expert
- **Salary:** $60,000.0 - $180,000.0
- **Contract:** Permanent contract
- **Skills:** Cyber Security, Linux, Network Topologies, IT Management, Information Systems Security Architecture Professional, Microsoft Servers, Network Configuration and Change Management, Network Architecture, Network Administration, Cisco Nexus Switches, WhatsUp Gold (Software), Cisco 2900, Firewalls (Computer Science), Juniper, SolarWinds (Software), Palo Alto Networks, Firepower, Cisco, Vmware
- **Published:** October 14, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9238939/senior-network-engineer

## About the Role

* Top Secret security clearance.
 * Bachelor's degree and 12-15 years of prior relevant experience. Additional education and experience may be considered in lieu of a degree.
 * Cisco Certified Network Professional (CCNP) certification.
 * Experience with engineering, deployment, and operations of LAN and WAN switches and firewalls, ensuring seamless integration into existing network infrastructure.
 * Working knowledge of defense-in-depth principles, network/HW/SW security architecture, network topology, IT device integrity, and common security elements.
 * Experience with and proven methods for managing the information security incident lifecycle, including incident response, mitigation, post-action reporting, and mapping a path forward.
 * Network management experience with SolarWinds, WhatsUp Gold, NetQoS, or NetBrain.
 * Cross-platform familiarity and experience with VMware, Linux, Microsoft Server, and AD.
 * Top Secret clearance with the ability to obtain a government Entry on Duty (EOD) suitability determination.

Preferred Skills and Qualifications

 * Master's degree from an accredited college or university in IT Management, Engineering, or a related field.
 * Proven experience (10+ years) in IT service delivery management.
 * Experience with User Activity Monitoring products and platforms.
 * Experience with Everfox High Speed Guard Platform.
 * Experience with Cisco, Juniper LAN/WAN network infrastructure.
 * Experience with Palo Alto Firewalls.
 * Certified Information Systems Security Professional (CISSP).
 * Cisco Certified Network Professional (CCNP) - Security.
 * Palo Alto Networks Accredited Configuration Engineer (ACE) - PAN-OS 7.0 Version.

## Description

M9 Solutions is seeking a Senior Network Engineer to work on-site in support of a government contract for a client located in Springfield, VA. An active Top Secret clearance is required., * Supports the network infrastructure, performs all routine maintenance activities, provides guidance on upgrades and system recapitalization, and performs availability/capacity management.

 * Oversees High Speed Guard Cross Domain solution that supports the transfer of data between multiple classification domains.
 * Supports all documentation to effectively capture the configuration baseline.
 * Designs and supports system recapitalization plans to account for capacity growth and changes as directed by the customer.
 * Serves as the subject matter expert on all network infrastructure.
 * Installs, configures, and maintains equipment including Cisco network and firewall gear (Cisco 2900, 4500, 9300, 9400, 6800, Nexus 9000, Cisco Firepower, and ASA).
 * Builds firewall policy and optimized rule sets for improved efficiency and threat prevention.
 * Deploys new network configuration to meet NIST/FISMA/STIG compliance requirements.
 * Supports ATO reviews and audits.