Job Requirements Ann Arbor, MI Top Secret/SCI Polygraph not specified Mid Level Career (5+ yrs experience) $80,000 - $130,000 Job Description Mid-Level System Administrator Job Description Radar Applications Incorporated (RAI) is a rapidly growing company delivering advanced sensor technologies for airborne and satellite radar missions. We seek highly motivated professionals to support our existing R D programs and to help us solve challenging problems for our Department of Defense (DoD), Intelligence Community (IC), and commercial customers. We have an immediate opening for a Systems Administrator in Ann Arbor, MI. This position is 100% onsite. RAI offers unrivaled employee compensation packages and a dynamic, mission-oriented work environment. Responsibilities

• Lead assigned systems administration tasks and infrastructure projects from planning through completion, working independently to resolve issues, document changes, and communicate status and risks.
• Administer and maintain Windows Server, Windows 11, and Red Hat Enterprise Linux systems, including installation, configuration, patching, access controls, and lifecycle maintenance.
• Manage hybrid identity and Microsoft services across on-premises Active Directory, Group Policy, Entra ID, and Microsoft 365, including authentication, permissions, and external collaboration.
• Manage Intune endpoint configurations, application deployments, update policies, BitLocker, Windows LAPS, and Microsoft Defender.
• Implement and maintain system hardening using DISA STIGs and CIS Benchmarks; investigate vulnerabilities, coordinate remediation, and maintain supporting compliance documentation.
• Investigate Microsoft Defender and Sentinel alerts, troubleshoot security issues, and coordinate incident response with the security lead.
• Configure and troubleshoot network services and infrastructure, including VLANs, DNS, DHCP, switches, wireless networks, firewalls, and VPN connectivity.
• Maintain high-capacity storage, RAID, Windows and Linux file services, and backup systems; lead assigned recovery tests and resolve availability and performance issues.
• Develop and maintain PowerShell and Bash scripts to automate provisioning, configuration, monitoring, and routine maintenance.
• Support engineering platforms and applications, including GitLab, Podman, MATLAB, and associated toolboxes and licensing.
• Identify infrastructure improvements and lead assigned upgrades from evaluation and planning through implementation, validation, and documentation.
• Maintain operational procedures, network diagrams, and system documentation. Qualifications
• Must be a U.S. Citizen
• Must be eligible to obtain a Top Secret Security Clearance.
• 5+ years of progressively responsible IT experience, including hands-on systems administration and independent responsibility for production systems.
• Experience administering Windows Server, Active Directory, Group Policy, and Microsoft 365 services.
• Working experience administering Linux systems, preferably Red Hat Enterprise Linux, including permissions, services, storage, and integration with Windows environments.
• Experience with system patching, security hardening, vulnerability remediation, and backup and recovery procedures.
• Solid understanding of TCP/IP, VLANs, DNS, DHCP, routing, firewalls, and VPNs, with the ability to troubleshoot issues across endpoints, servers, and networks.
• Ability to develop, modify, and troubleshoot PowerShell or Bash scripts and document repeatable administrative procedures.
• Demonstrated ability to take ownership of technical issues and projects, research unfamiliar problems, and carry work through to completion with limited supervision.
• Sound judgment when assessing changes, protecting system availability, and escalating security risks or decisions requiring broader approval.
• Strong communication and documentation skills, including the ability to explain technical issues to users and coordinate work with engineering and security staff.
• Current Security+ CE or another cybersecurity certification approved for the position. Preferred Qualifications
• Experience with Microsoft 365, Entra ID, and Intune, including Conditional Access, application deployment, and endpoint security policies.
• Experience supporting DoD or federal environments, implementing DISA STIGs or CIS Benchmarks, and supporting RMF or

NIST SP 800-171

requirements.

• Familiarity with Microsoft Defender, Sentinel, and Nessus/ACAS for security monitoring and vulnerability management.
• Experience with firewalls, networking, enterprise storage, or Windows/Linux file-sharing integration.
• Experience supporting GitLab, Git, Podman, or MATLAB installations, toolboxes, and licensing.
• Exposure to AWS GovCloud or Azure Government administration and identity integration.
• Bachelor's degree or current enrollment in a bachelor's degree program in Information Technology, Computer Science, Cybersecurity, or a related field. Compensation

Salary:

$80,000-130,000 depending on experience

Benefits:

Medical, Dental, Vision, 401k+Profit Sharing, Holidays, PTO, and Sick Leave.

group id:

91173722 Log in to view the job poster Apply now