Microsoft 365 Security & Infrastructure Administrator

Robert Michael Communications, Inc. • Voorhees Township, NJ

3d • Hybrid

About The Position

Robert Michael Communications, Inc. is seeking an experienced Microsoft 365 Security & Infrastructure Administrator to lead the day-to-day configuration, security, and operational integrity of our Microsoft 365 environment. This is a hands-on role focuses on identity protection, tenant hardening, and enforcing security best practices across Microsoft cloud services.
In this position, you will serve as the internal owner of Microsoft 365 security and platform configuration, working closely with IT leadership as well as external partners, including managed service providers (MSPs) and vendors.

Robert Michael Communications (RMC) is an administrative services organization providing shared support to an independent medical education company and three full-service medical communications agencies.This is a hybrid position requiring regular on-site presence at our corporate office in Voorhees, NJ, supporting the Information Technology Department.

Requirements

• 5+ years of hands-on experience administering Microsoft 365 environments
• Strong expertise in: -Microsoft Entra ID (Azure AD) -Conditional Access and MFA -Microsoft Defender security suite
• Proven experience securing Exchange Online, SharePoint, OneDrive, and Teams
• Working knowledge of Microsoft Intune and endpoint security management
• Experience supporting security audits and compliance initiatives
• Strong troubleshooting, documentation, and communication skills

Nice To Haves

• Microsoft certifications (one or more strongly preferred): MS-102, SC-300, SC-400, SC-200, SC-401, AZ-500, AZ-900
• Experience with PowerShell automation
• Familiarity with ISO 27001 and Zero Trust security principles
• Experience in a co-managed IT or MSP-supported environment

Responsibilities

• Administer Microsoft Entra ID (Azure AD), including: -Conditional Access policies -Multi-Factor Authentication (MFA) enforcement -Role-Based Access Control (RBAC) -Privileged Identity Management (PIM) -Guest and B2B access governance
• Manage identity lifecycle processes, including provisioning, deprovisioning, and access reviews
• Configure, manage, and monitor: -Microsoft Defender for Office 365 -Microsoft Defender for Endpoint (administrative level) -Secure Score and remediation initiatives
• Maintain and optimize: -Anti-phishing, anti-spam, Safe Links, and Safe Attachments policies -Security alerting and incident response workflows
• Serve as the first-line responder for Microsoft 365 security incidents
• Administer and secure: -Exchange Online (mail flow, retention, and security) -SharePoint Online and OneDrive security configurations -Microsoft Teams administration and security policies
• Implement and maintain: -Data Loss Prevention (DLP) policies -Retention labels and retention policies -eDiscovery (Standard) processes
• Manage device compliance and security using Microsoft Intune
• Enforce device encryption, Conditional Access, and compliance policies
• Support secure device onboarding and offboarding processes
• Support internal and external audits (e.g., HIPAA, ISO, SOC)
• Assist with security questionnaires and vendor risk assessments
• Ensure technical enforcement of documented security policies
• Maintain security documentation and configuration standards
• Develop and maintain PowerShell scripts to automate Microsoft 365 administration
• Identify and implement improvements to security posture and operational efficiency
• Stay current with Microsoft security features, best practices, and roadmap updates
• Train employees on devices, software access (local and remote), and basic network usage
• Install and troubleshoot peripherals, accessories, and software
• Follow departmental procedures and proactively communicate when deviations are necessary
• Collaborate with system administrators and network support teams to maintain and optimize infrastructure
• Independently analyze and resolve technical issues
• Provide cross-functional support within the IT department as needed
• Perform other duties as assigned

Benefits

• Medical Insurance
• Dental Insurance
• Vision Insurance
• Life and AD&D insurance- 100% paid in full for full-time employees
• Short and long-term disability insurance- 100% paid in full for full-time employees
• Voluntary insurance plans
• 401(k) retirement plan with a profit sharing
• Employee Assistance Program (EAP)
• Reduced summer hours; Memorial Day to Labor Day
• Paid time off and paid holidays
• Open communication encouraged
• Professional work environment encouraging personal development and team growth
• Discounted ticket service (shows, sporting events, movies, etc.)

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 1-10 employees