Senior IT Administrator
Factorial EnergyBillerica, Massachusetts
Full Time
Posted February 27, 2026
$110k - $150k
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Job Description
A senior role responsible for managing, securing, and improving the enterprise IT environment with a focus on Microsoft 365, security controls, endpoint management, and supporting organizational IT operations in a dynamic startup setting.
Key Responsibilities
- Administer and maintain Microsoft 365 services including Exchange Online, SharePoint Online, OneDrive, and Teams.
- Manage Microsoft 365 licensing, permissions, external sharing, retention, and secure collaboration governance.
- Administer Microsoft Entra ID Azure AD, including user lifecycle, groups, RBAC, and troubleshooting.
- Design, implement, and maintain security controls such as Conditional Access, MFA, and identity security measures.
- Operate and optimize Microsoft Defender services, including Defender for Endpoint and Defender for Office 365.
- Implement and maintain Microsoft Purview features like Sensitivity labels and Data Loss Prevention across M365 workloads.
- Support security investigations, control tuning, and audit preparations.
- Manage endpoint devices using Microsoft Intune, including enrollment, compliance, configuration, and deployment.
- Collaborate with teams to resolve technical issues, improve workflows, and enhance system effectiveness.
- Provide senior technical support and guidance for complex or escalated IT issues.
Requirements
- Five years of dedicated hands-on experience in systems administration roles.
- Ten years of total IT experience across infrastructure, systems, and user support environments.
- Deep experience managing Microsoft 365, ideally in an E5 licensed environment.
- Practical, production experience with Microsoft Entra ID Azure AD, including user lifecycle management, groups, RBAC, and identity troubleshooting.
- Experience designing, implementing, and maintaining Conditional Access, Multi-Factor Authentication (MFA), and baseline identity security controls.
- Experience operating and optimizing Microsoft Defender services, including Defender for Endpoint and Defender for Office 365.
- Experience implementing and maintaining Microsoft Purview capabilities, including Sensitivity labels and Data Loss Prevention (DLP) across Microsoft 365 workloads.
- Experience supporting security investigations, control tuning, and audit-ready configurations.
- Experience contributing to IT workstreams supporting SOX and TISAX compliance, including process execution, evidence collection, access reviews, and control documentation.
- Experience managing Microsoft Intune for device enrollment, compliance policies, configuration profiles, and application deployment.
- Ability to improve endpoint security posture, patching, and device lifecycle management across Windows, macOS, and mobile platforms.
- Ability to provide senior-level technical support and guidance for complex or escalated IT issues.
- Strong communication skills and a collaborative, service-oriented mindset.
- Experience supporting regulated environments, audits, or compliance initiatives (Nice to Have).
- Experience with PowerShell scripting for automation, reporting, and administration (Nice to Have).
- Relevant Microsoft certifications in M365, Security, or Endpoint technologies (Nice to Have).
Benefits & Perks
Compensation/salary range: $110,000 - $150,000 USD
Work schedule: Full time
Work environment perks: Collaborative, service-oriented team in a dynamic startup environment
Additional benefits: Opportunities for ownership across core platforms, exposure to compliance and security initiatives, and potential for professional growth
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