Senior Microsoft 365 Platform Engineer - IAM Security

Repligen Corporation; Massachusetts; On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Paid time off

Health/dental/vision benefits

Retirement benefits

Flexible spending accounts

Job summary

Repligen Corporation seeks a Senior Microsoft 365 Platform Engineer to lead the global Microsoft 365 platform, overseeing collaboration tools, IAM, Entra ID, and endpoint management. You will drive secure, scalable enterprise solutions and governance while aligning with enterprise architecture and security standards.

You will act as the technical authority for Microsoft 365 initiatives, plan migrations, and optimize platform health, performance, and compliance across distributed teams,

Qualifications

• Bachelor's degree in Information Technology, Computer Science, or related field, or equivalent experience.
• 7+ years hands-on Microsoft 365 administration and engineering experience in a medium-to-large enterprise.
• Deep expertise in Microsoft 365 Administration, SharePoint Online Administration & Governance, Microsoft Teams, Exchange Online, OneDrive for Business, Microsoft Entra ID (Azure AD), IAM, Microsoft Intune.
• Strong experience with Hybrid Active Directory and Entra ID environments.
• Expertise implementing and managing SSO, MFA, Conditional Access, RBAC, PIM, and Identity Governance.
• Strong PowerShell scripting and Microsoft Graph automation experience.

Responsibilities

• Own the administration, support, governance, and continuous improvement of Microsoft 365 services.
• Serve as the Tier 3 escalation point and technical authority for Microsoft 365 platform issues.
• Design and implement secure, scalable M365 solutions aligned with security standards.
• Lead governance, permissions, lifecycle management, and migration initiatives for SharePoint.
• Administer IAM capabilities including Hybrid Identity, SSO, MFA, Conditional Access, PIM, and Identity Governance.
• Support enterprise app integrations using SAML, OAuth, OpenID Connect, and SCIM.
• Manage endpoint solutions through Intune and Windows Autopilot.
• Develop automation using PowerShell and Microsoft Graph.
• Monitor platform health, security posture, adoption, and compliance metrics.
• Partner with Cybersecurity teams on security, compliance, governance controls.
• Participate in incident response and continuous service improvement.
• Create architecture docs, runbooks, and procedures.
• Evaluate roadmap enhancements and lead adoption of new technologies.

Skills

M365 Administration

SharePoint Admin

Teams

Exchange Online

OneDrive Admin

Entra ID / Azure AD

IAM

PowerShell

Graph Automation

Intune / Endpoint Management

Hybrid AD

SSO / MFA / CA

Education

Bachelor's degree or equivalent

Tools

ServiceNow

Microsoft Defender

Purview

ITIL

Job description

Repligen Corporation seeks a Senior Microsoft 365 Platform Engineer to lead the global Microsoft 365 platform, overseeing collaboration tools, IAM, Entra ID, and endpoint management. You will drive secure, scalable enterprise solutions and governance while aligning with enterprise architecture and security standards.

You will act as the technical authority for Microsoft 365 initiatives, plan migrations, and optimize platform health, performance, and compliance across distributed teams,