System Administrator

Install, configure, and maintain servers, desktops, and network devices in WAN/LAN environments and in accordance with applicable cybersecurity policies. Responsible for Patch Management for a fleet of classified information systems, including Windows and Linux operating systems. Perform hardware/software implementation and integration, and general infrastructure support. Prepare documentation related to system configurations and baselines. Responsible for providing backup and recovery services; managing file systems and disk space. Provide daily, on-site, support for the operations/maintenance. Performs troubleshooting for hardware, software, and network problems. Responsible for user account and access control management in a domain or stand-alone environment.

Great attitude with high degree of customer focus. Flexible and adaptable to changing priorities. Solid trouble-shooter, problem solver. Reliable and committed to getting the job done (including after hours as required). Excellent coping skills and the ability to juggle multiple priorities. Self-managed; able to work independently or with a team as well as the leadership skills necessary to lead a group of technical team members as required. Able to be objective and receive input from specialized team members according to their areas of expertise., Administering SAP and SCI information systems and interfacing them with DoW or Air Force enterprise networks. Minimum seven (7) years of experience as a System Administrator performing the patching, installation, configuration, maintenance, and flaw remediation of servers, workstations, and other computer components in accordance with all applicable STIGs on a classified network. Basic knowledge of Risk Management Framework requirements and how they impact the configuration requirements for Windows and Linux systems. Implementing system and application patch infrastructure in offline air-gapped environments, using tools such as WSUS, SCCM, and Red Hat Satellite. Working knowledge of network concepts and Type 1 encryption devices, such as TACLANE. Experience configuring and securing network equipment (switches and firewalls). Demonstrated experience deploying and managing multiple networks in a dynamic, demanding air-gapped classified environment. Working knowledge of WAN/LAN, to include Cisco-based routers, switches, and firewalls, Excellent written and verbal communication skills and ability to effectively interface with numerous cognizant security agencies, customers, and senior management. Ability to manage multiple networks in a dynamic, demanding environment. Minimum of a valid Top Secret clearance with in-scope background investigation date. DoD Directive 8570 / 8140 Information Assurance Technical (IAT) Level II certification. (e.g., Security+ CE, CCNA Security, CySA+, GICSP, GSEC, CND, SSCP) Prior experience as a System Administrator at an organization of similar size and complexity. Understanding networking concepts and cybersecurity related tools to include, Defense Information Systems Agency (DISA) Security Technical Implementation Guides (STIG) and Security Content Automation Protocol (SCAP), and vulnerability scanners. Ability to work in an agile environment, with a focus on continuous improvement and delivery., Basic knowledge of Risk Management Framework such as DAAPM/DAAG and JSIG compliance security controls requirements and how they impact the IT configuration requirements for Windows and Linux systems. Strong risk management skills, excellent communication, teamwork, and conflict management skills. Managing developer tools such as Gitlab, Jenkins, and self-hosted project management applications. Implementing multifactor (MFA) authentication via RSA Authentication Manager and RSA tokens. Strong problem-solving skills, with the ability to read documentation and find solutions to technical issues independently. Demonstrated experience with integrating Linux workstations and servers with Windows Active Directory. Experience with configuring and executing SIEM tools (e.g. Splunk, ELK), vulnerability management tools (Tenable Nessus), Network Storage devices (e.g. NetApp, Synology, etc.), monitoring tools (e.g. Wireshark, Snort, PRTG, etc.), and compliance tools (e.g. SCAP, SCC Tool, OpenSCAP, etc.). Experience with providing backup and recovery services; managing file systems and disk space via Samba, NFS, and Veeam. Experience with desktop and server virtualization using VMWare vSphere. Radiance Technologies is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.

Radiance Technologies is an employee-owned company with benefits that are unmatched by most companies in the Dayton, Ohio area. Employee ownership, generous 401K, full health/dental/life/vision insurance benefits, interesting assignments, educational reimbursement, competitive salaries, and a pleasant work environment combine to make Radiance Technologies a great place to work and succeed.