Network Engineer III/IV

Support mission-critical missile defense network infrastructure-engineering, maintaining, and securing high-availability systems that enable BMDS OPIR Architecture, Enterprise Sensor Lab, and Persistent Infrared Testbed operations. A Day in the Life - What you'll do

• Support the design, implementation, and sustainment of network architectures across classified and unclassified environments.
• Assist senior system administrators and network subject matter experts in maintaining critical network infrastructure and operational systems.
• Analyze and troubleshoot network performance using knowledge of routing protocols including BGP, OSPF, and EIGRP.
• Support network testing activities utilizing routers, switches, and firewalls to validate system performance and reliability.
• Monitor and analyze TCP/IP behavior, network communications, and traffic patterns to identify and resolve issues.
• Maintain and support high-availability network systems ensuring continuous mission operations.
• Develop and maintain network diagrams and documentation using tools such as Microsoft Visio and PowerPoint.
• Participate in operational testing events and support after-hours program activities as required.
• Collaborate across engineering teams to support complex, multi-domain network environments.

• Bachelor's degree in a STEM (Science, Technology, Engineering, or Mathematics) discipline from an accredited university.
• 5 years of related experience with a Bachelor's degree or 3 years with a Master's degree or 1 year with a PhD or 9 years of experience in lieu of a degree (Level III)
• 8 years of related experience with a Bachelor's degree or 6 years with a Master's degree or 4 years with a PhD or 12 years of experience in lieu of a degree (Level IV)
• Current DoD 8140 certification at IAT Level II or higher (Security+, GSEC, SCNP, SSCP, CISSP, CISA, GSE, SCNA)
• Experience with network architecture, engineering, design, implementation, and testing
• Familiarity with routers, switches, firewalls, DNS, and data encryption technologies
• Strong understanding of network communication protocols and troubleshooting methodologies
• Ability to communicate effectively through technical documentation and presentations
• Ability to work collaboratively within high-performing engineering teams
• Ability to travel up to 10% to support mission requirements
• Active in-scope DoD Top Secret clearance with SCI eligibility required at time of application
• Willingness to undergo a counter-intelligence polygraph

Preferred Qualifications

• Expertise with Cisco Catalyst and Nexus switches
• Experience with high-availability configurations on switches and firewalls
• Experience configuring firewalls including access policies, NAT, and troubleshooting
• Experience troubleshooting complex network issues using tools such as traceroute, ping, netcat, netstat, tcpdump, firewall logs, and packet capture tools such as Wireshark
• Experience creating and maintaining network topologies using Visio
• Experience documenting and implementing network device STIGs
• Basic Linux system navigation experience
• Experience with Cisco ISE administration
• Experience with static and multicast routing

Mid-Senior to Senior Level | Schriver SFB, CO | $100,000 - $145,000 | Active TS/SCI Clearance Required, Premium Health, Dental & Vision Insurance 401(k) with 6% Company Match Flexible PTO & Work Schedule Education & Certification Reimbursement Support for Military Leave Work-Life Balance & Traditional Family Values

Caribou Thunder is a HUBZone-certified small business providing advanced technical and engineering services to the U.S. Department of War and its mission partners. 35+ states and 20+ countries. We've delivered trusted solutions for over two decades - strengthening national readiness across missions on land, undersea, in the air, and throughout LEO, MEO, GEO, and deep space. Why Caribou Thunder? TEAM THUNDER - Mission Focused. Delivery Proven. Ready to Serve. Employee Advocacy Mission Proven Global Reach Skilled Teams Modern Tools Empowering Culture Our engineers and innovators ensure capability from sea floor to space frontier - delivering on time, maintaining compliance, and performing with precision in high-consequence environments. We specialize in Engineering Services, Cybersecurity, Software Development, Modeling & Simulation, Digital Engineering, and Artificial Intelligence - disciplines powering the nation's most complex technical missions. Employee Advocacy + Benefits Our people are the heart of Caribou Thunder. We invest in their growth, flexibility, and well-being - knowing their success drives ours.