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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Top Secret Network Engineer (SCI, CI Poly... - **Company:** Insight Global - **Location:** Colorado Springs, CO, United States - **Experience:** Experienced - **Salary:** $124,800.0 - $195,520.0 - **Contract:** Permanent contract - **Skills:** Cisco Routers, Complex Networks, Computer Networks, Linux, Traceroute, Microsoft Visio, Multicasting, Network Configuration and Change Management, Network Architecture, Network Diagrams, Routing, Packet Analyzer, Cisco Nexus Switches, Ping (Networking Utility), TCP/IP, Transmission Control Protocol (TCP), Tcpdump, Wireshark, Identity Services Engine, Computer Network Operations, Software Troubleshooting, Firewalls (Computer Science), Fortinet, Firewall Services Module, Cisco Switches - **Published:** June 29, 2026 - **Apply:** https://www.juju.com/job/00000000gcbfct ## About the Role Insight Global is seeking a Principal or Senior Principal Network Engineer (Level 3 or 4) to support a critical OPIR BMDs mission sitting onsite at Schriever Space Force Base in Colorado Springs, CO. This engineer will support highly available classified and unclassified networks that enable advanced infrared sensing, testing, and operational mission support. This role is hands-on and operational in nature, focused on network sustainment, troubleshooting, and incremental improvements within a uniquely complex testbed environment. The ideal candidate is a strong technical troubleshooter who is comfortable working across multiple tools, protocols, and network components in a fast-moving, mission-critical setting. This position offers a standard schedule: Monday-Friday, 8-4 or 9-5pm with flexible core hours but may require occasional after-hours support for testing or mission activities. This is a collaborative team environment supporting national defense priorities. This, Active Top Secret clearance with SCI eligibility (required to start) Willingness to undergo a Counter-Intelligence Polygraph DoD 8140 / IAT Level II certification or higher (Security+, GSEC, SSCP, CISSP, etc.) Bachelor's degree and 5-10+ years of Network Engineering experience or additional experience in lieu of degree Experience supporting enterprise or mission networks using Cisco routers and switches and Fortinet firewalls Strong understanding of TCP/IP behavior, network communications, and troubleshooting methodologies Ability to confidently discuss and apply tools such as WireShark, tcpdump, ping, traceroute, netstat, and related diagnostics Ability to work collaboratively in a team environment supporting high-visibility program CCNA or other networking-focused certifications Experience with Cisco Catalyst and Nexus platforms Firewall configuration experience (access policies, NAT, troubleshooting) Experience troubleshooting complex network connectivity issues in unique or non-standard environments Familiarity with Visio for network diagrams and topology documentation Experience implementing or maintaining network STIGs Basic Linux navigation skills Experience with HA network configurations, multicast routing, or Cisco ISE ## Description Support and maintain high-availability network infrastructure supporting the Persistent Infrared Testbed (PIT) and associated OPIR environments Perform day-to-day network operations, including maintenance, configuration changes, and troubleshooting Troubleshoot complex network issues using a variety of tools (e.g., packet captures, TCP dumps, WireShark, firewall logs) Support routers, switches, and firewalls across classified and unclassified networks Assist senior network engineers and system administrators with architecture sustainment and testing activities Contribute to improving network documentation, diagrams, and operational artifacts (not a primary documentation role) Support occasional after-hours operational testing or mission activities (not on-call) ## Related Videos - [An Applied Introduction to eBPF with Go](https://www.wearedevelopers.com/videos/1075-an-applied-introduction-to-ebpf-with-go) - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Turning Container security up to 11 with Capabilities](https://www.wearedevelopers.com/videos/718-turning-container-security-up-to-11-with-capabilities) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) ## Related Articles - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [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) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Best US AI Conferences for CTOs in 2026: Build vs. Buy, Vendor Evaluation, and Peer Intelligence](https://www.wearedevelopers.com/magazine/736-best-us-ai-conferences-for-ctos-in-2026-build-vs-buy-vendor-evaluation-and-peer-intelligence)