M365 Infrastructure Engineer

3Core Systems, Inc.$140K — $161K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of Microsoft infrastructure engineering experience in enterprise environments.
  • Strong support background for Microsoft 365 services and Exchange Online.
  • Experience with identity and endpoint management, including Microsoft Entra ID and Intune.
  • Hands-on knowledge of email security and threat protection.
  • Experience with secure email platforms like Proofpoint or Mimecast.
  • Proficient in PowerShell and automation tools.
  • Familiar with Power Platform technologies and Microsoft AI services.

Responsibilities

  • Lead engineering efforts across the Microsoft 365 ecosystem.
  • Enhance enterprise messaging and collaboration platforms.
  • Automate IT operations and improve business processes.
  • Strengthen email security, governance, and compliance.
  • Support the organization's AI platform and evaluate new Microsoft AI capabilities.
  • Collaborate with cybersecurity and business stakeholders to deliver technology solutions.

Benefits

  • Opportunities for professional development.
  • Collaborative and innovative work environment.
  • Engagement with cutting-edge AI technologies.
  • Potential for exposure to a variety of Microsoft products and platforms.
Full Job Description
Job Description
Role: M365 Infrastructure Engineer

Location: Must 5 days On-Site in Either Irving, TX or Henderson, NV. (Need to be Willing to Convert at Around $140k + 15% Bonus)

Senior Microsoft Infrastructure Engineer

They are adding a senior engineer who can own key Microsoft collaboration platforms while helping drive the next phase of their AI strategy.

This is a highly visible, hands-on role where you'll design, implement, and continuously improve enterprise solutions-not simply maintain existing environments.

What You'll Work On

  • Lead engineering efforts across the Microsoft 365ecosystem.
  • Support and enhance enterprise messaging andcollaboration platforms.
  • Build scalable automation to streamline IToperations and business processes.
  • Strengthen email security, governance, andcompliance.
  • Help stand up and mature the organization's AIplatform while evaluating new Microsoft AI capabilities.
  • Partner with infrastructure, cybersecurity, andbusiness stakeholders to deliver modern technology solutions.


What We're Looking For
• 5+ years of Microsoft infrastructure engineering experience in an enterprise environment.
• Strong background supporting Microsoft 365 services, Exchange Online, and hybrid messaging environments.
• Experience with identity and endpoint management technologies, including Microsoft Entra ID and Intune.
• Hands-on knowledge of enterprise email security, threat protection, and messaging administration.
• Experience administering secure email platforms such as Proofpoint, Mimecast, or similar technologies.
• Comfortable working with PowerShell and automation tools.
• Experience with Power Platform technologies, including Power Automate.
• Exposure to Microsoft Copilot, Azure AI services, or other enterprise AI initiatives is highly desirable.
• Someone who enjoys designing and implementing new solutions while helping shape long-term technology strategy.

Technical Environment

  • Microsoft 365
  • Exchange Online / Hybrid Exchange
  • Entra ID
  • Intune
  • Microsoft Defender for Office 365
  • Enterprise email security platforms
  • PowerShell
  • Power Automate
  • Microsoft Copilot
  • Copilot Studio
  • Azure AI Foundry

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