L2/L3 Senior Administrator

About the role

This position involves providing advanced technical support and administration for Windows 11 endpoint devices within a highly secure, 24×7 production environment. The senior administrator will oversee the full device lifecycle, ensuring platform stability, security compliance, and operational efficiency. The role requires a highly skilled professional capable of troubleshooting complex issues and working effectively within a critical enterprise setting. The position is based on‑site.

Responsibilities

• Administer Windows 11 endpoint devices throughout the entire device lifecycle, including enrollment, configuration, patching, and application deployment.
• Manage compliance policies and profiles using Omnissa Workspace ONE UEM (formerly AirWatch).
• Troubleshoot complex OS, VPN, certificate, and policy‑related issues to maintain endpoint stability.
• Support enterprise laptop fleet performance and security within a production environment.
• Participate in a 24×7 on‑call support rotation to ensure continuous platform availability.
• Coordinate patch and application deployment cycles with minimal user disruption.
• Document platform standards, configurations, and operational procedures for ongoing reference.
• Collaborate with security, endpoint, and infrastructure teams to resolve platform issues and enhance security posture.
• Ensure adherence to security policies, operational protocols, and best practices in a regulated environment.
• Monitor and optimize the health and performance of Windows 11 endpoints in a fast‑paced enterprise setting.

Qualifications

• 5+ years of experience supporting Windows endpoint environments in enterprise settings.
• Hands‑on experience with Omnissa Workspace ONE UEM managing Windows 10/11 devices.
• Comprehensive knowledge of the full device lifecycle: enrollment, configuration, patching, application deployment, and compliance.
• Strong troubleshooting abilities related to OS, VPN, certificates, and policy issues.
• Working knowledge of Windows 11 endpoint administration and security considerations.
• Ability to operate within a 24×7 on‑call rotation supporting critical production systems.
• Demonstrated security awareness and operational discipline in large‑scale, regulated environments.
• Experience working in fast‑paced, high‑volume enterprise settings.
• Excellent collaboration and communication skills to coordinate with cross‑functional teams.

Pay

$70.13 – $78.46 hourly