M365 Platform Engineer

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.

This role will be based in our Austin or New York office in a hybrid capacity.

• 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.
  
  

Technical Skills

• 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.
  
  Soft Skills
  
  
• 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.
  
  Preferred Qualifications
  
  
• 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.
  
  

Vista is a global technology investor that specializes in enterprise software. Vistas private market strategies seek to deliver differentiated returns through a proprietary and systematic approach to value creation developed and refined over the course of 25 years and 650 transactions. Today Vista manages a diversified portfolio of software companies that provide mission-critical solutions to millions of customers around the world. As of June 30 2025 Vista had more than $100 billion in assets under management. Further information is available at . Follow Vista on LinkedIn @Vista Equity Partners and on X @VistaEquity .