Senior Systems Engineer -Microsoft 365

Job Description Senior Systems Engineer

Exp – 6 to 8 Microsoft 365 | Messaging & Collaboration

Job Title Senior Systems Engineer — Microsoft 365 Department Messaging & Collaboration, Enterprise Technology Operations

Reports To Director, Systems Administration

Location Irving, TX (Hybrid) — supporting a global, follow-the-sun team

The role blends hands-on platform engineering with project delivery and governance: configuring and securing services, automating administration at scale, leading migrations and compliance initiatives, and partnering with Microsoft and third-party vendors to keep the collaboration ecosystem reliable, secure, and audit-ready.

The successful candidate is equally comfortable resolving a production incident, scripting a bulk change in PowerShell, and representing the team in a change advisory or security review.

Key Responsibilities

Platform Engineering & Administration

• Administer and optimize the Microsoft 365 tenant — Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, and Microsoft Entra ID — including service configuration, health monitoring, and lifecycle management.

• Manage Microsoft Teams calling, meeting, recording, and retention policies, including automatic call recording (ACR) and Teams Premium capability rollouts.

• Provision and govern SharePoint Online sites and OneDrive — permissions, public vs. private site classification, external/guest access, metadata, and storage cleanup.

• Administer Exchange Online mail flow, distribution and security groups, mailbox lifecycle, message footers/banners, safe-sender lists, and out-of-office configurations.

• Manage Microsoft Entra ID app registrations, secret and certificate rotation, conditional access policies, group-based licensing, and guest/inactive account reviews.

Automation & Integration

• Develop and maintain PowerShell automation for provisioning, bulk administration, and recurring reporting across the M365 stack.

• Build and troubleshoot Microsoft Graph API integrations and scope Azure application registrations for internal and partner solutions.

• Operate governance and reporting tooling (e.g., SysKit Point) for workspace provisioning, inactive-workspace cleanup, and adoption reporting, surfacing usage insights through Power BI dashboards.

Migration, Backup & Recovery

• Lead and support data migrations into Microsoft 365 — including Google Workspace to SharePoint Online and tenant transition initiatives — using tools such as AvePoint.

• Administer backup and recovery for M365 workloads (e.g., Keepit), perform OneDrive and SharePoint restores, and support backup-controls assurance reviews. Compliance, Security & Governance

• Implement information-governance and compliance controls using Microsoft Purview — data retention, legal holds, eDiscovery, and information protection.

• Support regulatory and audit programs, including CMMC readiness, SOX, and internal audit controls for collaboration platforms.

• Represent Messaging & Collaboration in the Change Advisory Board (CAB), authoring and reviewing change records and ensuring affected configuration items are documented.

• Contribute to AI governance for Microsoft Copilot and Copilot Studio, helping define safe, compliant adoption of AI capabilities across the tenant.

Service Delivery & Collaboration

• Act as a senior escalation point for complex incidents and service requests in the Messaging & Collaboration queue, partnering with Microsoft FastTrack and Premier Support on critical issues.

• Manage relationships with platform and tooling vendors, evaluating new features, licensing, and roadmap alignment.

• Mentor junior engineers, document standards and runbooks, and contribute to technical hiring and onboarding.

Required Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent professional experience.

• 5+ years of hands-on experience administering enterprise Microsoft 365 / Office 365 environments at scale.

• Deep expertise across Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, and Microsoft Entra ID (Azure AD).

• Strong PowerShell scripting skills for automating administration and reporting across M365 workloads.

• Working knowledge of Microsoft Graph API and Azure app registration / authentication concepts.

• Practical experience with conditional access, identity governance, and M365 security and compliance controls.

• Familiarity with ITSM and change-management processes (e.g., ServiceNow, CAB).

• Excellent troubleshooting, documentation, and cross-functional communication skills.

Preferred Qualifications

• Relevant Microsoft certifications (e.g., MS-102, MS-700, MS-721, SC-300, SC-400, or equivalent).

• Experience with Microsoft Purview, eDiscovery, legal holds, and data-retention administration.

• Hands-on experience with M365 migration and backup tooling such as AvePoint and Keepit.

• Exposure to compliance frameworks including CMMC and SOX.

• Experience governing Microsoft Copilot / Copilot Studio and other AI collaboration capabilities.

• Experience supporting a global, multi-region user base across AMER, EMEA, and APAC.

Core Technical Skills

Platforms & Services Tooling & Automation Microsoft 365 (tenant administration) PowerShell (Exchange, Teams, SharePoint, Graph) Exchange Online & mail flow Microsoft Graph API SharePoint Online & OneDrive SysKit Point (governance & reporting) Microsoft Teams & Teams Premium AvePoint & Keepit (backup / migration) Microsoft Entra ID (Azure AD) Power BI (usage & adoption reporting) Microsoft Purview (compliance) ServiceNow (ITSM / change management) Microsoft Copilot & Copilot Studio Conditional Access & identity governance