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Sr System Admin Jobs in Arizona (NOW HIRING)

Raytheon

Senior System Administrator

Tucson, AZ

$81K - $110K/yr

Provide IT systems administration in a heterogeneous Microsoft Windows environment supporting SIPR and other information systems. * Work as a team member in a fast ...

Raytheon Technologies

Senior System Administrator

Tucson, AZ · On-site

$81K - $110K/yr

Provide IT systems administration in a heterogeneous Microsoft Windows environment supporting SIPR and other information systems. * Work as a team member in a fast-paced technological environment.

krg technology inc

Sr.System Administrator

Tempe, AZ · On-site

$82K - $111K/yr

SCCM/SCOM Managing/Leading a team of other SA's Work experience in financial services Experience in Monitoring Systems. Additional Information Mandatory Skills: Active Directory, Microsoft Exchange ...

World View

Senior Systems Administrator

Tucson, AZ · On-site

$90K - $110K/yr

Perform system patching, vulnerability remediation, and security hardening across server and ... What We Offer As Senior Systems Administrator, you will help strengthen the core technology ...

World View

Senior Systems Administrator

Tucson, AZ · On-site

$81K - $110K/yr

Senior Systems Administrator Tucson, AZ Company Overview Ondas Holdings Inc (NASDAQ:ONDS) is ... Perform system patching, vulnerability remediation, and security hardening across server and ...

World View

Senior Systems Administrator

Tucson, AZ

$90K - $110K/yr

Perform system patching, vulnerability remediation, and security hardening across server and ... What We Offer As Senior Systems Administrator, you will help strengthen the core technology ...

Maricopa

Senior Systems Administrator

Phoenix, AZ · Hybrid

$82K - $132K/yr

The Senior Systems Administrator leads complex infrastructure projects, develops technical ... Enrollment in the Arizona State Retirement System, a defined retirement benefit requiring an 11.98 ...

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Sr System Admin information

What is a Sr System Admin?

Sr System Admins, or Senior System Administrators, are IT professionals responsible for managing and maintaining an organization's computer systems, servers, and network infrastructure. They oversee system performance, troubleshoot issues, implement security measures, and ensure data integrity and availability. Sr System Admins often lead projects, mentor junior staff, and play a critical role in planning and executing IT strategies to support business operations.

What are the key skills and qualifications needed to thrive as a Sr System Admin?

To thrive as a Sr System Admin, you need advanced knowledge of operating systems, network infrastructure, security protocols, and typically a degree in computer science or related field. Proficiency with server virtualization tools, cloud platforms (like AWS or Azure), and certifications such as Microsoft Certified: Windows Server or CompTIA Server+ are highly valuable. Strong problem-solving skills, effective communication, and the ability to work independently or lead a team set exceptional candidates apart. These skills and qualifications are crucial to ensure reliable system performance, security, and efficient IT operations in complex enterprise environments.

What are some common challenges Sr System Admins face when managing complex IT infrastructures?

Sr System Admins often encounter challenges such as integrating legacy systems with modern technologies, maintaining high system uptime, and responding quickly to security threats. Balancing proactive maintenance with urgent troubleshooting can be demanding, especially in large, distributed environments. Effective communication and collaboration with network, security, and development teams is essential to ensure seamless operations and swift issue resolution. Staying current with evolving technologies and best practices is also key to successfully managing these challenges.

Do senior system administrators make good money?

Senior system administrators typically earn higher salaries due to their experience, technical skills, and certifications such as CompTIA or Cisco. Their compensation can vary based on industry, location, and company size but generally reflects their advanced responsibilities managing complex IT infrastructure. They often receive benefits like bonuses, overtime, and opportunities for career advancement.

What does a senior system administrator do?

A senior system administrator manages and maintains an organization’s IT infrastructure, including servers, networks, and security systems. They troubleshoot issues, implement updates, and ensure system reliability, often using tools like scripting and monitoring software. They also provide guidance to junior staff and may hold certifications such as CompTIA Server+ or Microsoft Certified Solutions Expert.

What are popular job titles related to Sr System Admin jobs in Arizona?

For Sr System Admin jobs in Arizona, the most frequently searched job titles are:

What job categories do people searching Sr System Admin jobs in Arizona look for?

The top searched job categories for Sr System Admin jobs in Arizona are:

What cities in Arizona are hiring for Sr System Admin jobs?

Cities in Arizona with the most Sr System Admin job openings:

Sr System Admin jobs near you
Infographic showing various Sr System Admin job openings in Arizona as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 12% Part Time, and 3% Contract. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution.

System Admin / Onsite / Mesa

Motion Recruitment Partners, LLC

Arizona City, AZ • On-site

Other

Posted 24 days ago

Job description

Systems Administrator / Microsoft Cloud Engineer
Location: Onsite | Schedule: 4 days/week, 10-hour shifts
Job Summary
We are seeking an experienced Senior Systems Administrator / Microsoft Cloud Engineer with a proven track record of designing, implementing, and supporting enterprise infrastructure across hybrid cloud and on-premises environments. The ideal candidate will possess deep technical expertise in Microsoft 365 GCC High, Microsoft Azure, virtualization, identity and access management, automation, and enterprise data center technologies.
In this role, you will design, implement, administer, secure, and optimize enterprise-level solutions across the Microsoft ecosystem, including Microsoft 365 GCC High, Exchange Online, SharePoint Online, Microsoft Teams, OneDrive, Microsoft Entra ID, Microsoft Intune, and Azure services. You will support infrastructure modernization initiatives, cloud migrations, security enhancements, and compliance requirements while ensuring the reliability, scalability, and performance of critical enterprise systems.
The successful candidate is a strategic and hands-on technical leader with experience delivering secure, highly available infrastructure solutions while driving automation, operational excellence, and continuous improvement across hybrid IT environments.
Primary Responsibilities
  • Manage and administer the Microsoft 365 GCC High environment, including Exchange Online, SharePoint Online, Microsoft Teams, OneDrive, Intune, and Windows Autopilot.
  • Design, implement, and support hybrid infrastructure solutions leveraging both on-premises and cloud technologies.
  • Architect, deploy, and administer identity and access management solutions utilizing Microsoft Entra ID, Active Directory, Group Policy, Conditional Access, and Microsoft Intune.
  • Deploy, configure, and manage Microsoft Azure infrastructure services including Virtual Machines, Virtual Networks, Storage Accounts, App Services, and related services.
  • Implement and support Microsoft 365 security and compliance capabilities, including Microsoft Defender, Data Loss Prevention (DLP), Information Protection, and Microsoft Purview.
  • Design, deploy, and manage virtualization platforms including VMware vSphere and Microsoft Hyper-V.
  • Administer enterprise infrastructure technologies including Cisco UCS, HPE Nimble Storage, HPE SimpliVity, and related data center solutions.
  • Manage enterprise backup and disaster recovery solutions utilizing Veeam Backup & Replication.
  • Maintain and support Active Directory, DNS, DHCP, and related infrastructure services.
  • Support and enhance collaboration platforms including SharePoint Online and Microsoft Teams.
  • Administer and support Microsoft SQL Server environments, including maintenance, performance tuning, and backup strategies.
  • Monitor system performance, availability, and capacity while implementing disaster recovery and business continuity plans.
  • Perform root cause analysis for major incidents and implement preventive measures.
  • Work closely with Cybersecurity and Compliance teams to implement security best practices and ensure adherence to organizational policies.
  • Perform regular security audits, vulnerability assessments, and remediation activities across Microsoft 365 and on-premises environments.
  • Implement and manage endpoint security and compliance utilizing Microsoft Defender and Microsoft Intune.
  • Support multi-factor authentication solutions including Cisco Duo and Microsoft authentication technologies.
  • Assist with infrastructure modernization, cloud adoption, and digital transformation initiatives.
  • Monitor system utilization and recommend improvements to optimize performance, user experience, and cost efficiency.
  • Stay current on emerging Microsoft technologies and industry best practices.
  • Participate in on-call rotations and provide support during planned maintenance windows and critical incidents.
  • Support enterprise infrastructure across multiple locations as required.
Job Qualifications Required Qualifications
  • Bachelor's degree in Information Technology, Computer Science, or equivalent work experience.
  • Minimum of five (5) years of experience administering Microsoft 365 environments, including Exchange Online, SharePoint Online, Microsoft Teams, and Microsoft Entra ID.
  • Strong experience supporting Microsoft 365 GCC High environments.
  • Experience with Microsoft Azure administration and hybrid cloud technologies.
  • Strong knowledge of Microsoft Entra ID, Active Directory, PowerShell, and Microsoft 365 security capabilities.
  • Experience supporting VMware vSphere and/or Microsoft Hyper-V environments.
  • Experience administering enterprise backup solutions, preferably Veeam Backup & Replication.
  • Strong understanding of networking concepts including DNS, VPNs, firewalls, routing, and switching.
  • Experience with on-premises to cloud migrations and hybrid infrastructure deployments.
  • Strong troubleshooting, analytical, and problem-solving skills.
  • Excellent written and verbal communication skills with the ability to interact effectively with technical and non-technical stakeholders.
  • Ability to manage multiple priorities in a fast-paced, mission-critical environment.
  • Ability to travel up to 15% to support enterprise operations across multiple locations.
Preferred Qualifications
  • Microsoft Certified: Azure Administrator Associate.
  • Microsoft 365 Certified: Enterprise Administrator Expert.
  • Microsoft Certified: Identity and Access Administrator Associate.
  • VMware Certified Professional (VCP).
  • Veeam Certified Engineer (VMCE).
  • Experience with Cisco technologies including Meraki, Cisco ISE, Cisco Secure Access, and Cisco UCS.
  • Experience with Microsoft Purview, Information Protection, and eDiscovery.
  • Experience in regulated or compliance-driven manufacturing or enterprise environments.
  • Experience with Azure Virtual Desktop and automation frameworks.
  • Familiarity with Security Information and Event Management (SIEM) platforms and vulnerability management tools.
Additional Information
This position requires punctuality, professionalism, and the ability to effectively manage competing priorities while maintaining a high level of customer service and technical excellence.

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