Senior IT Administrator (Enterprise IT / Microsoft 365 & Security)

Empowering a Sustainable Future

Factorial Energy is a dynamic venture-backed company dedicated to creating a sustainable future. With a passionate team of engineers and business professionals, Factorial is developing breakthrough solid-state battery technology to enable safe, scalable, and high-performance cells for electric vehicles. Operating out of its research and development facility in the Greater Boston Area, Factorial holds a portfolio of solid-state innovations, including its segment-leading FEST® (Factorial Electrolyte System Technology). The company entered joint development agreements with Mercedes-Benz, Stellantis, and Hyundai Motor company and was recently featured in The Boston Globe and The New York Times.

Location: Billerica, MA
Employment Type: Full‑time

About the Role

We are seeking a Senior IT Administrator to help operate, secure, and continuously improve our enterprise IT environment. This is a hands‑on, senior role with responsibility spanning Microsoft 365, endpoint management, security controls, and broader IT operations.

The ideal candidate is technically strong, collaborative, and service‑oriented, comfortable partnering with teams across the organization to resolve issues, improve workflows, and strengthen overall system effectiveness in a dynamic startup environment.

Key Responsibilities

Enterprise IT & Microsoft 365 Administration

Own day‑to‑day administration of Microsoft 365, including Exchange Online, SharePoint Online, OneDrive, Teams, and related services
Maintain governance for permissions, external sharing, retention, and secure collaboration
Manage Microsoft 365 licensing, service configuration, and tenant health

Identity & Access Management

Administer Microsoft Entra ID (Azure AD) including user lifecycle, groups, RBAC, and identity troubleshooting
Design, implement, and maintain Conditional Access, MFA, and baseline identity security controls

Security, Compliance & Audit Support

Operate and optimize Microsoft Defender services, including:

Defender for Endpoint
Defender for Office 365

Implement and maintain Microsoft Purview capabilities, including:

Sensitivity labels / Information Protection
Data Loss Prevention (DLP) across M365 workloads

Support security investigations, control tuning, and audit‑ready configurations
Contribute to IT workstreams supporting SOX and TISAX compliance, including process execution, evidence collection, access reviews, and control documentation

Endpoint & Device Management

Own Microsoft Intune for device enrollment, compliance policies, configuration profiles, and application deployment
Improve endpoint security posture, patching, and device lifecycle management across Windows, macOS, and mobile platforms

IT Operations & Collaboration

Partner with teams across the organization to resolve technical issues, improve workflows, and enhance overall system effectiveness
Provide senior‑level technical support and guidance for complex or escalated IT issues
Contribute to documentation, SOPs, and operational runbooks
Support platform administration, user support, and project‑based work as organizational needs evolve

Required Qualifications

5+ years of dedicated hands‑on experience in systems administration roles
~10 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
- Conditional Access & MFA
- Microsoft Intune
- Microsoft Defender (Endpoint, Office 365)
- Data Loss Prevention and information protection controls
Comfortable working in a small, fast‑moving organization where responsibilities span platforms, projects, and user support
Strong communication skills and a collaborative, service‑oriented mindset

Nice to Have

Experience supporting regulated environments, audits, or compliance initiatives
PowerShell scripting for automation, reporting, and administration
Relevant Microsoft certifications (M365, Security, or Endpoint)

Why This Role Matters

This role plays a critical part in ensuring the security,compliance, reliability, and scalability of our IT environment as the company grows. You’ll have meaningful ownership across core platforms, exposure to compliance and security initiatives, and the opportunity to improve how IT supports the business—not just keep systems running.

Pay Range (MA)

$110,000—$150,000 USD

Senior IT Administrator

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