> Markdown version of [/jobs/ext/204029-network-engineer-iii-top-secret-clearance](https://www.wearedevelopers.com/jobs/ext/204029-network-engineer-iii-top-secret-clearance). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Engineer III (Top Secret Clearance) - **Company:** Lockheed Martin - **Location:** Colorado Springs, CO, United States (Remote available) - **Experience:** Experienced - **Salary:** $85,500.0 - $150,765.0 - **Contract:** Permanent contract - **Skills:** Algorithm Design, Automation of Tests, Border Gateway Protocol, Synchronous Optical Networking, CompTIA Security+, Cyber Security, Design of User Interfaces, OSI Models, Microsoft Visio, Multicasting, Network Planning and Design, Network Forensics, Network Functions Virtualization, Open Shortest Path First (OSPF), Microsoft PowerPoint, Ansible, Storage Virtualization, TCP/IP, Strategies of Testing, VCloud, Virtual Local Area Networks, Virtualization Technology, Wide Area Networks, Juniper, Palo Alto Networks, Fortinet, Routing & Switching, Open Network Automation Platform, Cisco, Vmware - **Published:** May 19, 2026 - **Apply:** https://www.clearancejobs.com/jobs/8922739/network-engineer-iii-top-secret-clearance ## About the Role You are a proven mid-level network engineer with solid hands-on experience in network design, development, and testing. You understand the OSI model, TCP/IP, BGP and OSPF, and possess strong traffic-analysis and troubleshooting skills. You are comfortable with multi-vendor firewalls (Juniper, Fortinet, Palo Alto), multicast, VLANs, GRE tunnels, and optical transport technologies, and you thrive in collaborative, fast-paced agile environments., * An active Final Top Secret security clearance is required. * Must possess a DoD 8140/8150 IAT Level II compliant certification such as CompTIA Security+ CE or other certs such as CISSP or CASP. If you don't possess the certification, you must be able to obtain the certification within 60 days of starting. * Demonstrated experience with network design, development, and testing methodologies. * Strong knowledge of OSI model, TCP/IP, BGP, OSPF, and network traffic analysis. * Hands-on firewall experience (Juniper, Fortinet, Palo Alto). * Experience with UDP multicast, SONET, MSPP, VLANs, GRE tunnels, and TCP/IP network designs. Desired Skills: * Multi-vendor switching/routing expertise (Juniper, Cisco) and WAN optimizer experience. * CCNA or JNCIA certification is a plus. * Familiarity with TACLANEs and optical transport equipment. * Excellent written and verbal communication; proficient with Microsoft PowerPoint and Visio. * Ability to work effectively in a collaborative, agile scrum environment. * Knowledge of DoD security standards, STIG compliance, and system accreditation processes. * Exposure to virtualization technologies (NFV, SD-WAN, VMware, VMware Cloud Foundation, NSX, vSAN, Aria). * Experience with network automation tools such as Ansible. * Prior involvement with the C2BMC program is a plus. Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration. Clearance Level: Top Secret, Ability to Work Remotely: Onsite Full-time: The work associated with this position will be performed onsite at a designated Lockheed Martin facility. ## Description What We're Doing At Lockheed Martin, our Command and Control, Battle Management and Communications (C2BMC) National Team (C2NT) is pioneering the development and integration of cutting-edge technologies to advance the Missile Defense System, safeguarding the United States and its allies. Our collaborative and agile organization operates in a fast-paced environment, driving innovation through tasks such as sensor/weapon integration, algorithm development, user interface development, automated testing, cyber security, enterprise/infrastructure services, and enhancing leading-edge missile defense technologies. The Work As a primary Network Development Engineer for the C2BMC program, you will plan, deploy, integrate, and test network upgrades across operational sites. Working within an agile scrum team, you'll translate customer requirements and contractual obligations into actionable tasks, travel to remote locations (e.g., Schriever SFB, Alaska, Guam, Europe) to lead installations, troubleshoot issues independently, and keep program personnel informed of status and outcomes. Please Note: - This position requires a government security clearance; you must be a US Citizen for consideration. - This position is based at a Lockheed Martin facility in Colorado Springs, CO. 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