Network Engineer Tier 3 with Security Clearance

Piper Companies is seeking a Network Engineer Tier 3 to support a government-focused cybersecurity and IT operations environment. The Network Engineer Tier 3 role is ideal for a highly experienced network professional with deep expertise in enterprise networking, security infrastructure, and data center operations who can support mission-critical systems in a secure federal environment. Responsibilities of the Network Engineer Tier 3: • Install, configure, maintain, and optimize LAN and WAN infrastructure including routers, switches, VPN appliances, load balancers, and security devices. • Monitor and analyze network performance using management tools, troubleshoot issues, and optimize environments based on best practices. • Apply security patches across network devices including routers, switches, voice/video systems, and security appliances. • Maintain accurate inventory of network assets, including hardware and software lifecycle management. • Provide design recommendations and technical input during engineering and planning meetings. • Support data center network operations, including storage, virtualization systems, and infrastructure expansion efforts. • Troubleshoot network outages and issues impacting voice, video, and data services while coordinating upgrades and improvements. • Configure and manage routing, switching, and firewall technologies within complex secure environments. • Support both Windows and Unix/Linux operating systems, ensuring proper integration with network services. • Prepare detailed reports on network performance, incidents, upgrades, and infrastructure status. • Serve as a primary point of contact for client technical issues, providing timely troubleshooting and resolutions. • Participate in and lead network projects, ensuring proper planning, execution, and adherence to timelines. • Implement and enforce network security protocols to prevent unauthorized access and cyber threats. • Collaborate with cross-functional teams to resolve complex technical issues and improve system resilience. • Assist in designing and implementing disaster recovery and backup solutions. Qualifications of the Network Engineer Tier 3: • Active Top Secret clearance required. • Strong experience with Cisco routers and switches (IOS/NX-OS). • Hands-on experience with Palo Alto firewalls and VPN technologies. • Experience with F5 load balancers (GTM/Big-IP DNS preferred). • Familiarity with General Dynamics Taclanes and/or GEMOne is a plus. • Strong understanding of network security, traffic analysis, vulnerability assessment, and systems hardening. • Proficiency with Layer 2 and Layer 3 protocols including BGP, VLANs, LLDP, LACP, ARP, and 802.1x. • Knowledge of encryption and communication protocols such as TLS/SSL, IPsec, SSH, DNS, and NTP. • Experience supporting both Windows and Unix/Linux systems in enterprise environments. • Demonstrated expertise in network design, implementation, troubleshooting, and performance tuning. • Strong ability to manage multiple projects and tasks within defined timelines. • Excellent customer service, communication, and problem-solving skills. Compensation for the Network Engineer Tier 3 includes: • Salary range: $150,000 - $175,000 • Comprehensive benefits package including medical, dental, vision, and 401(k) • Onsite work environment in Washington, DC • Opportunity to support a high-impact federal program in cybersecurity and national security This job opens for applications on 06/28/2026. Applications for this job will be accepted for at least 30 days from the posting date. #LI-AR2 #LI-ONSITE