Senior Systems Administrator

Eagle Rock PropertiesPlainview, NY
$120,000 - $130,000

About The Position

The successful candidate will play a key role in the implementation, migration, security, and support of both our on-premises and cloud-based services. The candidate will collaborate with senior IT and executive staff on all security and cloud-based initiatives.

Requirements

  • 5+ years of experience in IT systems and Microsoft 365 administration.
  • 5+ years of experience with Active Directory, Entra ID, Intune, PowerShell, and automation.
  • Strong grasp of cybersecurity fundamentals and best practices especially NIST-CSF.
  • Demonstrated ability to lead or contribute to migration projects (AD → Entra ID, SMB → SharePoint).
  • Familiar with migration to phish resistant MFA technologies, passkeys/FIDO2.
  • Experience with SAML / OAuth2 / FIDO2 / Passkey authentication and Conditional Access policies.
  • Familiarity with NIST CSF controls.
  • Proven problem-solving skills, attention to detail, and proactive mindset.
  • Excellent communication and collaboration abilities.

Nice To Haves

  • CompTIA (Sec+, CySA, Cloud+)
  • Microsoft (MS-102, MD-102, SC-300, AZ-104)

Responsibilities

  • Implement and maintain Microsoft 365 security and compliance configurations across Intune, Entra ID, and related services.
  • Serve as Tier 2 / escalation support for complex and high-impact technical issues.
  • Administer and optimize SharePoint, OneDrive, Teams, and Exchange Online environments.
  • Develop and enforce device, application, and configuration policies through Intune and Entra ID.
  • Manage data governance, classification, discovery, and protection using Microsoft Purview tools.
  • Implement and manage modern authentication standards including FIDO2, passkeys, and Conditional Access policies.
  • Ensure alignment with organizational IT standards, policies, and security baselines.
  • Maintain and publish clear, detailed documentation for configurations, policies, and operational procedures.
  • Contribute to continuous security hardening and improvement of Microsoft Secure Score.
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