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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Systems Engineer III (Network) - **Company:** E-INFOSOL LLC - **Location:** Huntsville, AL, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Performance Management, Systems Engineering, Cyber Security, Computer Networks, Data Centers, Document Management Systems, Digital Electronics, Monitoring of Systems, Infrastructure as a Service (IaaS), IP Addressing, Network Architecture, Network Planning and Design, Network Service, Network Administration, Network Virtualization, Cisco Nexus Switches, TCP/IP, Virtual Local Area Networks, Virtual Machines, Private Cloud Environment, Computer Networking Systems, Load Balancing, Firewalls (Computer Science), Data Center Networking, SC Clearance, Information Technology, Bare Metal, Cisco - **Published:** June 24, 2026 - **Apply:** https://www.clearancejobs.com/jobs/8991256/principal-systems-engineer-iii-network ## About the Role Active Top-Secret clearance with capability to obtain SCI/CI Poly if needed to meet contract requirements. Bachelor's Degree in Computer Science or a related field of study Minimum 6years of experience in a similar position with a large organization Minimum of Cisco Certified Design Professional (CCDP), or Cisco Certified Network Associate (CCNA), or DevNet Associate certifications, Application-Centric Infrastructure (ACI) Cisco Tetration and Cisco Multi-Site-Orchestrator (MSO) Network Assurance Engine (NAE) Network Services Orchestrator (NSO) Nexus Insights and Digital Network Architecture Center (DNAC) Desired Skills: Knowledge of Cisco SDN, Firewall, Load Balancers Knowledge of Network Management and Monitoring Tools Knowledge of Network Design Knowledge of Automation and Automation Tools Knowledge of LAN, WAN, vLAN ## Description E-INFOSOL LLC is seeking a highly motivated Principal Systems Engineer III (Network) to be a full-time employee in Pocatello, ID, Clarksburg, WV, or Huntsville, AL to join our innovative and customer solutions focused team., Principal Systems Engineer III (Network) shall be responsible for design, deployment, testing, certification, patching, and addressing interoperability issues for all features, components, and application dependencies. To include switches, firewalls, load balancers, software defined networking, private cloud requirements, etc., Design, implementation and ongoing support of the Networking Infrastructure within and between data centers. Serve as the advanced matter expert for all data center network environments. Create and maintain network infrastructure for both bare-metal and virtual machines with the appropriate LAN, WAN, vLAN, SDN, firewall and load balancer configurations, using both OEM and third-party tools that include virtual network tools (NSX) and services. Provision/configure the required networking for servers and applications. Evaluate, improve, and maintain the information security throughout the data center network infrastructure. Monitor and correct network issues and create recovery processes for failures and performance bottlenecks. Provide real time alerts for network problem issues and implement proactive solutions for future problems to include re-design or tech refresh. Install, configure, test, and maintain system management tools for all data center network components. Proactively ensure the highest levels of systems and infrastructure availability Monitor and test application performance for potential bottle necks, identify possible solutions, and work with developers to implement those fixes Maintain security, backup, and redundancy strategies Write and maintain custom scripts to increase system efficiency and lower the human intervention time on any tasks, such as automated provisioning of addresses and VLANS with Infrastructure as a Service (IaaS). Participate in the design of information and operational support systems Provide 4th level support Liaise with vendors and other IT personnel for problem resolution Ensure technical documentation exists for all systems and is kept up to date to include inventory and patch levels of all systems to include hostnames, property numbers, IP addresses, enclave, number of cores, number of processors, admin passwords, certificates, and service accounts on a monthly interval. Provide real time alerts and dashboard information on network performance and availability. Document system configurations to include passwords, access controls, version number, and revision numbers, patch levels, and inventory to include hostnames, TCP/IP addresses, number of processors, and number of cores, memory, and license keys. Continually transition knowledge to the Government staff through training and assistance on how to use the technology using industry best practices. Provide real-time reporting of provisioned and non-provisioned resources such as bandwidth utilized to include performance metrics for availability, performance, and trends. ## 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) - [An Applied Introduction to eBPF with Go](https://www.wearedevelopers.com/videos/1075-an-applied-introduction-to-ebpf-with-go) - [Single Server, Global Reach: Running a Worldwide Marketplace on Bare Metal in a Cloud-Dominated World](https://www.wearedevelopers.com/videos/1206-single-server-global-reach-running-a-worldwide-marketplace-on-bare-metal-in-a-cloud-dominated-world) - [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) - [Turning Container security up to 11 with Capabilities](https://www.wearedevelopers.com/videos/718-turning-container-security-up-to-11-with-capabilities) - [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) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [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) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [What is Software Engineering?](https://www.wearedevelopers.com/magazine/289-what-is-software-engineering)