Senior Endpoint Systems Administrator

What is the Mission?

At MAJUS, we help federal agencies solve complex technology challenges through innovative solutions, exceptional people, and a commitment to customer success. As a Senior Endpoint Systems Administrator, you will play a key role in delivering secure, reliable, and efficient endpoint services that empower users across the enterprise. This position supports the administration, modernization, and security of Windows, macOS, and mobile device environments while enhancing the overall user experience through automation, collaboration, and continuous improvement.

• Provide advanced Tier II desktop and endpoint support for Windows, macOS, and mobile devices.
• Deploy, configure, maintain, and troubleshoot laptops, desktops, peripherals, mobile devices, and enterprise software.
• Administer Microsoft Entra  (Azure AD), Active Directory, multi factor authentication, and identity lifecycle management.
• Manage enterprise endpoint management platforms such as Microsoft Intune, JAMF, Ivanti, KACE, or similar solutions.
• Perform workstation imaging, software deployment, patch management, and endpoint lifecycle administration.
• Diagnose and resolve complex operating system, authentication, networking, and performance issues.
• Analyze Windows Event Viewer and macOS Console logs to identify root causes and implement long term solutions.
• Configure and support mobile device management solutions for iOS and Android devices.
• Collaborate with cybersecurity, cloud, network, and engineering teams to resolve escalated technical issues.
• Create and maintain technical documentation, standard operating procedures, and knowledge base articles.
• Mentor junior support staff and provide guidance on complex technical escalations.
• Support vulnerability remediation, endpoint hardening, and Zero Trust security initiatives.
• Assist with workstation refresh projects, hardware deployments, data migrations, automation initiatives, and incident response activities.

• Minimum of five years of experience supporting enterprise desktop and endpoint environments.
• Strong administration experience with Windows and macOS operating systems.
• Experience administering Microsoft Entra  (Azure AD) and Active Directory.
• Hands on experience with endpoint management platforms such as Microsoft Intune, JAMF, Ivanti, KACE, or similar technologies.
• Strong knowledge of enterprise imaging, software deployment, patch management, and endpoint lifecycle management.
• Experience troubleshooting enterprise hardware, operating systems, authentication, networking, and endpoint security issues.
• Familiarity with mobile device management, multi factor authentication, and endpoint security best practices.
• Excellent analytical, troubleshooting, documentation, communication, and customer service skills.
• Ability to communicate effectively with both technical and nontechnical users.
• Experience supporting hybrid cloud environments is preferred.
• Experience developing Power Shell, Bash, or other automation scripts is preferred.

• Bachelor s degree in Information Technology, Computer Science, Cybersecurity, or a related field preferred.
• Equivalent combination of education, certifications, and relevant professional experience may be considered.

• CompTIA Security+
• Microsoft Certified:
  Endpoint Administrator Associate
• Apple Certified IT Professional
• AWS Certified Cloud Practitioner
• ITIL Foundation

Ability to obtain and maintain a Public Trust or other government security clearance, as required by the contract.

Salary: ,000

Benefits include:

• Medical, dental, and vision insurance
• Paid time off and paid holidays
• 401(k) retirement plan with company match
• Professional development and certification assistance
• Career growth opportunities

Full Time

Washington, DC (On-site)