Corporate System Administrator Jobs (NOW HIRING)

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
• educational reimbursement
• competitive salaries
• pleasant work environment

Radiance is searching for an experienced Systems Administrator to provide support to critical computer systems and network infrastructure at the Beavercreek, Ohio facility.

The qualified candidate will provide design, maintenance, sustainment, and enhancement support for the architecture in a classified environment; ensure compliance with applicable information assurance requirements; ensure 24/7 continuity of operations; and create and update relevant system documents.

Work hours are normal business hours, however, occasional support during non-business hours may be required. This person will be a major part of a specialized corporate IT and security team primarily focused on building and maintaining program systems that support a growing Air Force mission.

Successful candidates will have the following behavioral competencies: 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.

• 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.

• 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’s culture is driven by our commitment to our customers and our employee‑owners.

Our employee‑owners thrive on entrepreneurship, empowerment, and mutual responsibility for growth and sustainability.

Our culture consists of individuals who embody technical and leadership skills to deliver superior solutions to the nation’s toughest technical challenges.

We believe building trust and credibility with our customers leads to long‑term results.

We invest in a superior technical workforce where leaders are developed, innovation is encouraged, and achievements are recognized.

We seek innovative ways to improve, experiment, take risks, foster collaboration, and empower our employee‑owners.

Our values drive our culture, business model, and daily interactions.

These values constantly remind us of who we are and what we do.

Our employee‑owners influence how we operate our business.

We relentlessly pursue operating excellence by innovating, improving our processes, and reducing waste.

We believe in being wise and ethical stewards of capital and resources.

Our values dictate how we interact with each other and our customers, partners, and suppliers.

Honesty, trust, humanity, alignment, and value creation require that we treat our employees with dignity and respect and provide them with fair compensation and equal employment opportunity.

We believe in connecting with our communities and have a responsibility to be good corporate citizens, and we believe in sustainable business practices, which include supporting the environment and the communities in which we work.

Employee-Ownership Radiance is a proud employee-owned company!

Employee‑ownership benefits both our customers and workforce, and ensures that Radiance doesn’t have to answer to stockholders or be driven by quarterly earnings reports.

Thus, Radiance will always prioritize enhancing our customer’s mission over expanding our bottom line.

We are singularly focused on providing our customers with game‑changing solutions to their most challenging requirements.

This is only possible because employee‑ownership attracts the highest quality employees, empowers them to identify capability enhancements, and provides them with the freedom to take risks to deliver high‑quality solutions.

Employee‑ownership also provides tangible and long‑term financial security for our people and their families.

Therefore, employee‑ownership embodies participation, empowerment, freedom, teaming, excellence, accountability, mission focus, and security.