Senior Systems Administrator: Cloud, Security & Automation

Penhall International; Anaheim (CA); On-site; USD 110,000 - 150,000; Full time

Job summary

Penhall Company is seeking a Senior Systems Administrator to maintain and enhance our IT infrastructure, spanning on‑premises and cloud environments. You will focus on high availability, security, and scalable automation while guiding standards and best practices.

The role requires deep expertise in system administration, cybersecurity, and process automation, with the ability to manage multiple priorities in a fast‑paced environment and to mentor junior staff.

Qualifications

• Bachelor's degree or equivalent experience.
• 5+ years of systems administration in an enterprise environment.
• Preferred MCSE or Microsoft 365 certifications.

Responsibilities

• Manage on‑premises and cloud IT infrastructure (networking, servers, AD, Azure, M365).
• Serve as escalation point for IT challenges with vendors.
• Design and optimize maintenance, patching, and DR testing with automation.

Skills

Microsoft 365 ecosystem

Azure AD and SSO

Cybersecurity practices

Automation and scripting

Communication skills

Education

Bachelor's degree in Computer Information Systems or related field

Tools

Azure

VMware

Veeam

Automox

PowerShell

Proofpoint

CrowdStrike

Active Directory

Microsoft 365

Job description

Penhall Company is seeking a Senior Systems Administrator to maintain and enhance our IT infrastructure, spanning on‑premises and cloud environments. You will focus on high availability, security, and scalable automation while guiding standards and best practices.

The role requires deep expertise in system administration, cybersecurity, and process automation, with the ability to manage multiple priorities in a fast‑paced environment and to mentor junior staff.