Senior Endpoint Systems Administrator

MAJUS Consulting

Washington (District of Columbia)

On-site

USD 100,000 - 140,000

Full time

14 days+

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Benefits offered by this job

Medical, dental, and vision insurance

Paid time off and holidays

401(k) retirement plan with company}_{

Professional development and certiﬁ c?

Job summary

MAJUS Consulting in Washington, DC is seeking a Senior Endpoint Systems Administrator to deliver secure, reliable endpoint services across the enterprise. You will manage Windows, macOS, and mobile device environments, drive automation, and collaborate with cybersecurity, cloud, and network teams.

The role requires 5+ years of enterprise desktop experience, expertise with Intune/JAMF/Ivanti/KACE, imaging, patching, MFA and Azure AD, plus strong communication and documentation skills.

Qualifications

Minimum of five years in enterprise desktop and endpoint support.
Strong admin skills on Windows and macOS.
Experience with Entra ID (Azure AD) and Active Directory.
Hands-on with Intune, JAMF, Ivanti, KACE or similar tools.
Enterprise imaging, software deployment, patching, and lifecycle management.
Troubleshooting hardware, OS, networking, and endpoint security issues.
Familiar with MFA, MDM and security best practices.
Excellent documentation, communication and customer service.

Responsibilities

Provide advanced Tier II desktop and endpoint support for Windows, macOS, and mobile devices.
Deploy, configure, maintain, and troubleshoot laptops/desktops and enterprise software.
Administer Entra ID (Azure AD), AD, MFA and identity lifecycle management.
Manage endpoint platforms like Intune, JAMF, Ivanti, KACE.
Imaging, patching, software deployment, and lifecycle administration.
Investigate OS, authentication, networking, and performance issues.
Analyze logs to identify root causes and long-term fixes.
Support mobile device management for iOS and Android.
Collaborate with cybersecurity, cloud, network and engineering teams.
Create and maintain technical docs and SOPs.
Mentor junior staff on escalations.
Support vulnerability remediation and Zero Trust initiatives.
Assist with workstation refreshes and data migrations.

Skills

Windows administration

macOS administration

Azure AD / Entra ID

Intune/JAMF/Ivanti/KACE

Imaging and patch management

Endpoint lifecycle management

Troubleshooting

Documentation

Customer service

Hybrid cloud experience

Automation scripting (PowerShell/Bash)

Strong communication

Education

Bachelor's degree in IT / CS / Cybersecurity

Equivalent combination of education/certs/experience

Tools

Microsoft Intune

JAMF

Ivanti

KACE

Active Directory

Job description

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.

What Will You Do?

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 ID (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.

What Skills Do You Possess?

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 ID (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 PowerShell, Bash, or other automation scripts is preferred.

Education Requirements

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.

Certifications