M365 Platform Engineer

Vista Equity Partners ManagementAustin, TX
9d

About The Position

Vista Equity Partners is seeking an M365 Platform Engineer to design, implement, and maintain our Microsoft 365 platform using modern infrastructure-as-code and automation practices. This role combines platform engineering principles with M365 administration to create scalable, secure, and self-service solutions. The position also serves as backup to our IAM Platform Engineer for Entra ID operations.

Requirements

  • 5+ years administering Microsoft 365 environments.
  • Strong PowerShell scripting for M365 and Azure automation.
  • Experience with Bash scripting and Linux/Unix environments.
  • Hands-on Microsoft Entra ID administration and security.
  • Deep understanding of M365 security features (Conditional Access, MFA, DLP).
  • Experience with Git and CI/CD concepts.
  • Knowledge of IAM protocols (SAML, OAuth, modern authentication).
  • Experience executing Exchange migrations, including hybrid configurations, mailbox moves, and mail flow cutovers.
  • Strong written and verbal communication skills.
  • Collaborative mindset with mentoring capability.
  • Proactive problem solver with an automation-first approach.
  • Customer-focused and security-conscious.
  • Adaptable with a continuous learning mindset.

Nice To Haves

  • Experience supporting M365 or Exchange integrations during mergers and acquisitions, carve-outs, or divestitures.
  • Terraform for infrastructure-as-code implementations.
  • Microsoft Graph API and REST-based automation.
  • Power Platform administration and governance.
  • Microsoft certifications (MS-102, AZ-104, SC-300).
  • Familiarity with ITIL or service management frameworks.
  • Experience with identity governance and administration (IGA) initiatives.
  • Knowledge of Microsoft Purview administration.

Responsibilities

  • Design and implement automation solutions for M365 platform management using PowerShell, Bash, and Terraform.
  • Configure, secure, and monitor all M365 services (excluding SharePoint) using infrastructure-as-code practices.
  • Develop and maintain Azure Automation, Logic Apps, Power Automate, and Power Apps for automated response to platform events.
  • Manage Microsoft Entra ID configurations including conditional access policies, privileged access management, and identity lifecycle automation.
  • Implement and maintain security policies across the M365 stack, including Defender for Office 365 and Information Protection.
  • Assist in administration and governance of Power Platform environments.
  • Create self-service capabilities and automated workflows to reduce manual administrative overhead.
  • Serve as backup for IAM Platform Engineer, supporting ITGC controls and identity governance activities.
  • Collaborate with security team to ensure compliance with regulatory requirements and internal policies.
  • Document platform configurations, automation scripts, and operational procedures.
  • Participate in on-call rotation for platform-related incidents.
  • Collaborate with and mentor the service desk team to reduce manual M365 operational tasks.
  • Manage and secure Exchange Online, including mail flow rules, anti-phishing policies, transport configurations, and mailbox provisioning.
  • Lead and support Exchange migrations (on-premises to Exchange Online and tenant-to-tenant), including planning, execution, coexistence management, and post-migration stabilization.
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