Job Title: Network & Systems 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: We are seeking a highly skilled and motivated Network/Systems Administrator to join our IT team. The ideal candidate will have a deep understanding and hands-on experience in managing both Windows and Linux-based systems, as well as network equipment with a strong passion for optimizing and maintaining infrastructure. Candidate will be integral to ensuring the stability, security, and performance of our servers and systems, playing a critical role in supporting our organization’s IT operations and business objectives. The candidate must have experience maintaining compliance with DISA STIG requirements, including implementing and managing security controls, and ensuring that all systems adhere to STIG and cyber security guidelines. Candidate will have a thorough understanding of how to assess and remediate vulnerabilities, apply necessary patches, and continuously monitor systems to uphold the highest standards of security and compliance within a government or defense-related IT environment.

Responsibilities:

• Manage and maintain Windows and Linux servers, hardware and software, including installation, configuration, and ongoing updates
• Implement and maintain DISA STIG and/or other security hardening compliance across various systems and network infrastructure
• Develop and maintain backup and recovery plans to ensure data integrity and availability
• Provide support to end-users, including resolving system-related issues and answering technical queries
• Assessment and remediation of vulnerabilities according to cyber security guidelines
• Monitor and track and corporate infrastructure products (hardware and software) for license tracking and End of Life planning
• Research and Investigate exploits and vulnerabilities and recommended remediations
• Apply security patches and updates in a timely manner to keep systems secure and up to date
• Monitor server performance, troubleshoot issues, and optimize system performance
• Maintain detailed documentation of system configurations, procedures, and troubleshooting steps

REQUIRED SKILLS AND EXPERIENCE:

• Proven experience as a Linux System Administrator
• Exceptional time management skills with a strong ability to multi-task
• Deep knowledge of Windows and RHEL-based Linux operating systems (e.g., Red Hat, CentOS, Rocky Linux)
• Strong knowledge of DISA STIG guidelines and best practices and general system and network hardening
• Proficiency in shell scripting and automation tools (e.g., Bash, Python, Ansible).
• Strong understanding of networking concepts and protocols (TCP/IP, DNS, DHCP).
• Experience with virtualization and containerization technologies (e.g., VMware, Docker).
• Familiarity with security assessment tools and vulnerability scanning tools
• Familiarity with Amazon Web Services or other Cloud technologies

Education and Certification Requirements:

• Bachelor’s degree in information technology, or a related field (or equivalent work experience)
• Must possess CompTIA Security+ certification

• Manage and maintain Windows and Linux servers, hardware and software, including installation, configuration, and ongoing updates
• Implement and maintain DISA STIG and/or other security hardening compliance across various systems and network infrastructure
• Develop and maintain backup and recovery plans to ensure data integrity and availability
• Provide support to end-users, including resolving system-related issues and answering technical queries
• Assessment and remediation of vulnerabilities according to cyber security guidelines
• Monitor and track and corporate infrastructure products (hardware and software) for license tracking and End of Life planning
• Research and Investigate exploits and vulnerabilities and recommended remediations
• Apply security patches and updates in a timely manner to keep systems secure and up to date
• Monitor server performance, troubleshoot issues, and optimize system performance
• Maintain detailed documentation of system configurations, procedures, and troubleshooting step