Microsoft 365 Platform Administrator

Vanguard

Microsoft 365 Platform Administrator designing enterprise architecture and leading modernization initiatives for unified communications. Managing security configurations and collaborating across teams to align with business goals.

Posted 5/7/2026full-timeWayne • Arizona, North Carolina, Pennsylvania, Texas • 🇺🇸 United StatesSeniorLeadWebsite

Tech Stack

Tools & technologies

AzureCloudDNSFirewallsPython

About the role

Key responsibilities & impact

Design and maintain enterprise architecture for Microsoft 365 and unified communications services (Exchange, SharePoint, Teams, OneDrive, Office365, and other MSFT platforms)
Lead modernization initiatives and define future-state roadmaps aligned with business goals
Implement, tune and enforce advanced security configurations and governance policies (Conditional Access, Defender, DLP, MIP, ATP, certificates/TLS, MFA, Zero Trust)
Implement ALZ (Azure Landing Zone) based Conditional Access & Defender policies that activate during crises and high-risk situations
Develop and maintain runbooks for documented processes to support our Tier 2 team
Create scripting (PowerShell, Python, Graph API, etc.) and automation processes to streamline repetitive tasks
Spearhead end-to-end implementation projects: requirements gathering, solution design, pilot planning, production rollout, post-mortem reviews and operational handoff
Troubleshoot complex issues spanning endpoints, identity, network, cloud services, collaboration apps and tenant integrations; restore service quickly and prevent recurrence; lead root-cause analysis
Collaborate with InfoSec, network, NOC, and end-user computing teams to ensure designs align with security standards and operational requirements
Manage and optimize Microsoft licensing and cost models
Monitor service health, telemetry and usage trends using Microsoft Defender, Sentinel, Purview, Log Analytics and third-party tools
Serve as a final escalation point for complex issues
Mentor junior engineers and contribute to knowledge base

Requirements

What you’ll need

Minimum of eight years related work experience
Undergraduate degree in a related field or the equivalent combination of training and experience
8+ years of experience in enterprise IT, with a minimum of 5 years focused on Microsoft 365 architecture, unified communications engineering or adjacent infrastructure roles
Deep knowledge of Microsoft 365 security, compliance, governance, identity and access management (OKTA, Azure AD)
Hands-on experience administering and troubleshooting Microsoft 365 suite (Exchange, SharePoint, Teams, OneDrive, Office365) and related services and integrations
Strong troubleshooting skills across multiple domains, including networking (DNS, routing, firewalls, VPNs, QoS), identity, endpoints and cloud services
Demonstrated technology leadership: ability to set standards, drive technical decisions, influence stakeholders without direct authority, and write clear documentation
Experience leading complex implementations, migrations and service improvements from concept through delivery in a regulated environment (e.g. finance, healthcare, government)
Excellent communication, collaboration and stakeholder engagement skills.
Microsoft certifications (MS-101, MS-500, AZ-305, SC-300) preferred
Strategic thinker with passion for innovation, continuous improvement and digital transformation
Proven ability to lead cross-functional initiatives and influence diverse teams
Proficiency in scripting and automation (PowerShell, Python, Graph API); experience modernizing manual deployments to GitHub and IaC pipelines.
Experience in regulated industries and financial products supporting mission-critical communications services
Familiarity with DLP tools like Digital Guardian, advanced telemetry collection tactics, and real-time monitoring strategies
Experience with zero trust architectures, conditional access policies and Identity governance best practices

Benefits

Comp & perks

Competitive compensation and comprehensive benefits including robust health coverage
Retirement plans
Paid time off
Wellness programs
Continuous learning opportunities

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Microsoft 365 architectureunified communications engineeringsecurity configurationsscriptingautomation processestroubleshootingidentity and access managementconditional access policieszero trust architectureadvanced telemetry collection

Soft Skills

technology leadershipcommunicationcollaborationstakeholder engagementstrategic thinkinginnovationcontinuous improvementinfluencementoringproblem-solving

Certifications

MS-101MS-500AZ-305SC-300