Senior Network Administrator

About Us: PMAT is an innovative small business founded with a passion for developing forward-leaning solutions from exceptional people that increase the mission's capability. We focus on designing and building impactful digital solutions that utilize modern cloud, data, and software concepts. Our passion is working on complex and progressive challenges such as edge platform computing, containerizing legacy platforms, distributed data platforms, or heterogeneous data analysis. We recruit, retain, and foster a team motivated to pursue passions, investigate new ways of doing things, and embody an innovative and entrepreneurial spirit. We believe in being curious about every element of a problem and experiment relentlessly. We foster continuous learning in an environment that encourages positive collaboration and expands our capabilities. We tap into collective intelligence, acknowledging that the most brilliant people may not be in the room. Above all else, we believe that delivering and demonstrating is more potent than a sheet of paper. We are passionate about mission-centric design and delivering effective capabilities to and for the warfighter. Whether you’re an experienced engineer or just beginning your career, you’ll work alongside experts who are committed to solving mission-critical problems. If you’re passionate about using your skills to make a real difference, apply today and become part of a team that’s shaping the future of defense technology! About the role: PMAT is seeking a senior-level Network Infrastructure professional to lead and sustain enterprise network operations supporting both corporate and mission environments. This role is responsible for ensuring the reliability, security, and performance of PMAT’s network infrastructure while providing technical leadership, strategic planning, and hands-on execution. The ideal candidate brings deep technical expertise, sound judgment, and a proactive mindset, with the ability to operate independently, mentor others, and collaborate across internal teams and external partners to deliver resilient, secure network capabilities. Responsibilities: Lead network infrastructure operations, including installation, configuration, and maintenance of network hardware such as routers, switches, firewalls, VPNs, and wireless environments across local and wide area networks (LAN/WAN). Ensure the security, availability, and performance of network infrastructure through continuous monitoring, routine maintenance, and proactive issue resolution. Troubleshoot and resolve complex network and system-wide issues, identifying root causes and implementing sustainable solutions. Implement and manage network security controls, including firewall rules, access controls, and identity management solutions (e.g., Microsoft 365, Azure). Support and maintain related systems, including servers, virtualization environments, security cameras, and other network-connected infrastructure. Create, maintain, and update comprehensive network documentation, including system architecture diagrams, configurations, standards, and operational procedures. Participate in strategic planning efforts by contributing to network architecture, technology roadmaps, standards, and policies. Provide technical leadership, guidance, and mentorship to system administrators and other technical staff. Serve as a technical lead or project lead for network-related initiatives, upgrades, and implementations. Coordinate with and manage vendors to procure, deploy, and support network hardware and services. Required Skills and Experience: Minimum 10+ years of hands-on technical experience in the following areas: Network infrastructure: Installing, configuring, and upgrading network hardware like routers, switches, firewalls, VPNs, and wireless environment. Maintenance and monitoring: Performing routine maintenance and continuous monitoring of network performance, availability, and security. Troubleshooting: Diagnosing and resolving both common and complex network and system-wide problems. Security: Implementing and managing network security measures, including firewall rules and user access controls (e.g., M365). Server and system support: Managing and maintaining network servers, virtualization environments, and other related systems. Documentation: Creating and maintaining comprehensive network documentation, reports, and system architecture diagrams. Strategic planning: Participating in the development of network and technology strategies, standards, and policies. Technical leadership: Providing technical direction and training to other system administrators and technical staff. Project management: Acting as a project leader for network-related projects. Vendor management: Coordinating with and managing vendors for hardware and services. Education and Certification Requirements: Bachelor’s degree in Information Technology, Computer Science, Engineering, or a related field, or equivalent combination of education and professional experience CCNA or equivalent One of the following IAM Level III certifications are required to meet the DoD 8140/8570 requirement. CISSP CISM GSLC CCISO One of the following preferred but not required. CAP CASP+ CCSP (cloud) CEH or PenTest+ Citizenship and Clearance requirements: Active DOD Secret security clearance required Active DOD TS (w/ SCI eligibility) security clearance preferred Location: On-site Hancock Street and Ronson Court, San Diego, CA Travel: 10% Work Environment: PMAT offices as needed. In some cases, work in a government facility may be required. Travel may be required for customer engagement, team coordination, and potentially for business development. PMAT is an equal-opportunity employer. We believe in hiring a diverse workforce and sustaining an inclusive, people-first culture. We are committed to non-discrimination on any protected basis, such as disability and veteran status, or any other basis covered under applicable law. #J-18808-Ljbffr