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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Tier 3 Network Engineer (Top Secret) - **Company:** Zachary Piper - **Location:** Manassas, VA, United States - **Experience:** Expert - **Salary:** $150,000.0 - $170,000.0 - **Contract:** Permanent contract - **Skills:** Secure Shell (SSH), IEEE 802.1X, Link Aggregation (Ethernet), Microsoft Windows, Address Resolution Protocols, Amazon Web Services, Apple IOS, Microsoft Azure, Border Gateway Protocol, Spanning Tree Protocols, Cisco IOS, Cisco Routers, Cloud Computing, Configuration Management, Communications Protocols, Computer Networks, Data as a Services, Dynamic Host Configuration Protocol, Network Address Translation, DevOps, Domain Name System (DNS), Ethernet, Enhanced Interior Gateway Routing Protocol, Failover, Network Topologies, Hyper-V, Internet Control Message Protocol, IP Addressing, Internet Protocol Security (IP SEC), IPv4, IPv6, Intrusion Detection and Prevention, Subnetting, Virtual Private Networks (VPN), Local Area Networks, Network Security, Network Troubleshooting, Network Layer, Multicasting, NetFlow, Network Architecture, Network Planning and Design, Network Installation Services, Network Monitoring, Routing, Network Segmentation, Packet Analyzer, Network Time Protocols, Network Protocols, Open Shortest Path First (OSPF), Performance Tuning, Ansible, BIG-IP Global Traffic Manager (GTM), Service Pack, Security Information and Event Management, Simple Network Management Protocols, Syslog, TCP/IP, Traffic Analysis, Wireshark, Virtual Local Area Networks, Virtualization Technology, Wide Area Networks, Wireless Networks, Wi-Fi Technology, Network Routers, Scripting, Transport Layer Security, Google Cloud, Load Balancing, Nx-os, System Availability, Firewalls (Computer Science), Juniper, Data Center Networking, Palo Alto Networks, Fortinet, 3-tier Architectures, TACACS+ Protocol, Firewall Services Module, Open Network Automation Platform, Big Ip, Vulnerability Analysis, Vmware - **Published:** July 9, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9021069/tier-3-network-engineer-top-secret ## About the Role * Bachelor's degree from an accredited college in a related discipline and 8+ years of network engineering experience * Certifications: Sec+, CCNA (highly preferred) * Extensive experience configuring Cisco routers and switches (IOS/NX-OS), as well as Palo Alto Next-Generation Firewalls and VPNs. * Hands-on experience with General Dynamics Taclanes and/or GEM One encryption devices. * Proficient in F5 Load Balancer technologies, including GTM and BIG-IP DNS. * Strong technical background in both Windows and Unix/Linux environments, with expertise in network security, traffic analysis, incident response, vulnerability assessment, packet inspection, and system hardening. * In-depth knowledge of Layer 2 and Layer 3 networking protocols, encryption standards, and communication protocols, including but not limited to: TLS/SSL, IPsec, SSH, BGP, VLAN, LLDP, LACP, ARP, 802.1X, DNS, AES, and NTP. * Skilled in network design, implementation, troubleshooting, and performance optimization. ## Description Zachary Piper Solutions is seeking a Tier 3 Network Engineer to support a critical program for Department of Energy, National Nuclear Security Administration in Manassas, VA and Washington, D.C.. The team is seeking a skilled engineer to design, implement, and maintain secure, high-performance network infrastructures in support of stockpile management, nonproliferation and nuclear security., * Work closely with cross-functional teams to diagnose issues, enhance performance, and maintain the scalability and dependability of the network, while overseeing continuous upgrades and strengthening security measures * Deploy, configure, maintain, and enhance LAN and WAN infrastructure, including routers, switches, VPN devices, load balancers, and security systems. * Apply security patches promptly across all network infrastructure components, such as routers, switches, voice/video systems, and security appliances. * Utilize network monitoring tools to assess performance, troubleshoot issues, and implement optimizations aligned with industry best practices. * Maintain a current inventory of network assets, tracking both hardware and software components to support effective asset management and lifecycle planning. * Contribute to network project planning by offering design insights, technical evaluations, and support during engineering discussions. * Oversee data center network infrastructure, assist with storage and virtualization platforms, and collaborate with cross-functional teams on infrastructure scaling and enhancements. * Diagnose and resolve network issues and outages impacting voice, video, and data services; coordinate and schedule necessary upgrades and performance enhancements. * Exhibit skills in routing, switching, and firewall configuration, supporting the deployment and maintenance of secure, high-performance LAN/WAN environments., Keywords: network design, network implementation, LAN, WAN, routing protocols, top secret, DOE Q, Q clearance, F5, load balancer, VLAN, NTP, CCNA, CCNP, Sec+, Net+, onsite, on-site, Manassas, D.C., Virginia, ts/sci, security clearance, switching protocols, BGP, OSPF, EIGRP, VLAN, STP, RSTP, MSTP, subnetting, IP addressing, IPv4, IPv6, NAT, PAT, DHCP, DNS, TCP/IP, UDP, ICMP, ARP, MAC addressing, QoS, multicast, unicast, broadcast, firewall configuration, VPN, IPsec, SSL/TLS, SSH, network security, intrusion detection, intrusion prevention, SIEM, packet analysis, Wireshark, SNMP, NetFlow, syslog, network monitoring, network troubleshooting, performance tuning, load balancing, F5, GTM, BIG-IP, Cisco IOS, NX-OS, Juniper, Palo Alto, Fortinet, Check Point, network automation, Python scripting, Ansible, SDN, SD-WAN, cloud networking, AWS networking, Azure networking, GCP networking, virtualization, VMware, Hyper-V, network segmentation, 802.1X, RADIUS, TACACS+, wireless networking, Wi-Fi, 802.11 standards, network topology, cabling standards, fiber optics, Ethernet, PoE, data center networking, high availability, redundancy, failover, network documentation, change management, configuration management, network compliance, NIST, ISO 27001, ITIL, DevOps, NetDevOps ## Related Videos - [IP Authentication: A Tale of Performance Pitfalls and Challenges in Prod](https://www.wearedevelopers.com/videos/1413-ip-authentication-a-tale-of-performance-pitfalls-and-challenges-in-prod) - [IoT: The road to sustainability](https://www.wearedevelopers.com/videos/557-iot-the-road-to-sustainability) - [Small, Secure, Interconnected: The next Internet Protocol](https://www.wearedevelopers.com/videos/100062-small-secure-interconnected-the-next-internet-protocol) - [Cyber Sleuth: Finding Hidden Connections in Cyber Data](https://www.wearedevelopers.com/videos/893-cyber-sleuth-finding-hidden-connections-in-cyber-data) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) ## Related Articles - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)