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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Engineer III - **Company:** Sigma Inc. - **Location:** San Diego, CA, United States - **Experience:** Starter - **Salary:** $75,000.0 - $100,000.0 - **Contract:** Permanent contract - **Skills:** Proxy Servers, Software Applications, Systems Engineering, VoIP, CompTIA Security+, Computer Networks, Networking Hardware, IP Addressing, Internet Protocol, IPv6, Internet Security, Information Systems Security Architecture Professional, Python (Programming Language), Network Configuration and Change Management, Network Architecture, Network Diagrams, Network Connections, Routing, Network Administration, Network Time Protocols, Windows PowerShell, Ansible, Software Engineering, Virtual Local Area Networks, Wide Area Networks, Network Switches, Network Routers, Scripting, Identity Services Engine, Network Access Control, Computer Network Operations, System Availability, Firewalls (Computer Science), SC Clearance, Forescout, Deployment Automation, Routing & Switching, Firepower, Cisco - **Published:** September 20, 2026 - **Apply:** https://www.careerbuilder.com/job-details/1520-network-engineer-i-iii-san-diego-ca--6e6651a1-e5b5-4e5e-9756-1921cd874c5a ## About the Role Network Engineer I: * 0-2 Years of Experience. * Knowledge of Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout). * Knowledge of Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler). * Knowledge of Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services. * Knowledge of deployment automation tools (Ansible, Python, PowerShell). * Knowledge of delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides. * Security+ or CISSP and at least one industry certification (CCNA/DevNet Associate). * Must be a U.S. citizen. Network Engineer II: * 3+ Years of Experience. * Experience with Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout). * Experience with Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler). * Experience with Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services. * Experience with deployment automation tools (Ansible, Python, PowerShell). * Experience with delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides. * Security+ or CISSP and at least one industry certification (CCNA/DevNet Associate). * Must be a U.S. Citizen. Network Engineer III: * 7+ Years of Experience. * Expertise with Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout). * Expertise with Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler). * Expertise with Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services. * Expertise with deployment automation tools (Ansible, Python, PowerShell). * Expertise with delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides. * Security+ or CISSP and at least one industry certification (CCNP/DevNet Professional). * Must be a U.S. Citizen. Computer Software/Programs: * Network Access Control * Switching/Routing * Firewall * Deployment Automation Personnel Clearance Level: * Candidate must possess or have the ability to obtain an active Secret security clearance or higher. * Clearance may be sponsored for the right candidate. Education Requirements: * Bachelor's or Technical Degree from an accredited college or university in an unspecified field of study., Ansible, Automation, CCNA - Cisco Certified Network Associate, CISSP - Certified Information Systems Security Professional, Cisco Network Systems, CompTIA Security+, Computer Software, Cross-Domain Solutions (CDS), Documentation, Enterprise Architecture, Equipment Maintenance/Repair, Firewalls, High Availability, IP (Internet Protocol), IP Addressing, IPv6, Identify Issues, Installation Guide, Internet Security, Internet/Online Service, Maintain Compliance, Military/DoD Standards, NTP, Network Access Control (NAC), Network Administration/Management, Network Architecture/Engineering, Network Cable, Network Configuration Management, Network Connectivity, Network Routers, Network Software, Network Switching, Network System Hardware, Proxy Server, Python Programming/Scripting Language, Quality Assurance, Routing Protocols, Scripting (Scripting Languages), Secret Clearance, Security Clearance, Security Compliance, Software Engineering, Systems Administration/Management, Systems Engineering, United States Citizen, United States Department of Defense (DoD), VLAN (Virtual Local Area Network), Validation Documentation, Validation Testing, VoIP (Voice over IP), Well Installation, Wide Area Network (WAN), Windows PowerShell, Wireless Communications ## Description * Configure, install, and maintain network equipment, software and services across Navy Enterprise Network architecture to include switching, routing, firewall, proxy, wireless, call managers, network access control, voice over IP, and network time services. * Design, develop, implement, and troubleshoot VLANs, routing protocols, IP addressing plans, and WAN connectivity. * Integrate external services including a wide variety of connected systems. * Apply and validate network-related STIGs in coordination with cybersecurity personnel to ensure compliance with DoD security standards. * Create, maintain, and update installation documentation, network diagrams, IP schemas, port mappings, and script/configurations for automated installations. * Conduct diagnostics and fault isolation during official and unofficial test events as well as production installations. * Collaborate with systems, software, and cybersecurity engineers to deliver secure and resilient network operations. * Participate in shipboard testing, validation, and documentation. ## Related Videos - [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) - [Getting under the skin: The Social Engineering techniques](https://www.wearedevelopers.com/videos/38-getting-under-the-skin-the-social-engineering-techniques) - [IoT: The road to sustainability](https://www.wearedevelopers.com/videos/557-iot-the-road-to-sustainability) - [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) ## Related Articles - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [The Ultimate Software Engineer Career Path Guide for 2023](https://www.wearedevelopers.com/magazine/146-the-ultimate-software-engineer-career-path-guide-for-2023) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)