Senior IT Infrastructure & Security Engineer

Enterprise Electrical; Houston (TX); On-site; USD 110,000 - 140,000; Full time

Job summary

Enterprise Electrical seeks a Senior IT Infrastructure Engineer to own the Microsoft 365 environment, identity management, endpoint strategy, and overall secure infrastructure across offices, facilities, and active construction sites.

You will work with the MSP to enforce security, governance, and operational excellence, while guiding incident response, backups, and infrastructure modernization initiatives.

Qualifications

• 4+ years of progressively responsible IT infrastructure experience.
• Strong Microsoft 365 administration experience, including Entra ID and governance.
• Experience coordinating with MSPs and implementing security controls.

Responsibilities

• Design, administer, and maintain Microsoft 365 tenant architecture and configuration standards.
• Manage identity lifecycle, MFA, device compliance, and conditional access policies.
• Coordinate security investigations and MSP activities; maintain runbooks and documentation.
• Administer backup, recovery, and business continuity processes for critical systems.
• Monitor security posture, gaps, and remediation priorities aligned to risk.
• Oversee network, server, and endpoint infrastructure and project changes.

Skills

Microsoft 365 administration

Identity & Access Management

Endpoint management

Security controls

Documentation

MSP coordination

Incident response

PowerShell scripting

Education

Bachelor’s or Associate degree in IT/CS/Cybersecurity

Tools

PowerShell

Microsoft Entra ID

Intune

Defender for Office 365

Purview

Job description

Enterprise Electrical seeks a Senior IT Infrastructure Engineer to own the Microsoft 365 environment, identity management, endpoint strategy, and overall secure infrastructure across offices, facilities, and active construction sites.

You will work with the MSP to enforce security, governance, and operational excellence, while guiding incident response, backups, and infrastructure modernization initiatives.