Systems & Microsoft 365 Administrator

Arnold Oil Company of Austin; Austin (TX); On-site; USD 85,000 - 110,000; Full time

Job summary

Arnold Oil Company of Austin seeks an experienced IT Systems Administrator to install, configure, and manage Windows client environments in a fast-paced office setting. You will handle AD, Group Policy, and Microsoft 365 administration while supporting VPN, network, and VoIP infrastructure.

The role requires strong hardware troubleshooting, end-user support, and meticulous documentation, with on-site duties in Austin, TX. A high school diploma is required; college degree preferred.

Qualifications

• Minimum 5 years of experience supporting Windows clients in a corporate environment.
• Deep knowledge of the Windows operating system, Active Directory, and Group Policy.
• Strong PC hardware expertise and ability to resolve complex hardware/software issues.
• Proven experience administering Microsoft 365 (Exchange Online, Teams, SharePoint, Intune, etc.).
• Experience with Microsoft 365 identity and security controls, including Entra ID, MFA, Conditional Access, and endpoint compliance.

Responsibilities

• Install, configure, upgrade, and troubleshoot hardware, software, and operating systems
• Manage routers, switches, firewalls, and VPN solutions (site-to-site and client-based)
• Provide Tier 2/3 support for end-user applications and remote laptop users
• Administer and support Microsoft 365, including Exchange Online, Teams, SharePoint, OneDrive, Intune and security/compliance features
• Maintain system and software license inventories
• Deploy, configure, and manage VoIP infrastructure
• Perform racking, installation, and cabling as needed
• Configure and troubleshoot wireless networks and related technologies
• Develop and maintain network documentation, topology diagrams, and SOPs
• Collaborate with security teams to ensure compliance with best practices for identity management, endpoint security, and data protection

Skills

Windows OS

TCP/IP Networking

Hardware Troubleshooting

End-user Support

Documentation

Education

High School Diploma or GED

College Degree Preferred

Tools

Active Directory

Group Policy

VPN Client

Exchange Online

Intune

Job description

Job Details

Job Location: ARNOLD OIL COMPANY OF AUSTIN LP - AUSTIN, TX 78744

Position Type: Full Time

Key Responsibilities

• Install, configure, upgrade, and troubleshoot hardware, software, and operating systems
• Manage routers, switches, firewalls, and VPN solutions (site-to-site and client-based)
• Provide Tier 2/3 support for end-user applications and remote laptop users
• Administer and support Microsoft 365, including Exchange Online, Teams, SharePoint, OneDrive, Intune and security/compliance features
• Maintain system and software license inventories
• Deploy, configure, and manage VoIP infrastructure
• Perform racking, installation, and cabling as needed
• Configure and troubleshoot wireless networks and related technologies
• Develop and maintain network documentation, topology diagrams, and SOPs
• Collaborate with security teams to ensure compliance with best practices for identity management, endpoint security, and data protection

Qualifications

• Minimum 5 years of experience supporting Windows clients in a corporate environment
• Deep knowledge of the Windows operating system, Active Directory, and Group Policy
• Strong PC hardware expertise and ability to resolve complex hardware/software issues
• Solid understanding of TCP/IP networking and Windows domain environments
• Proven experience administering Microsoft 365 (Exchange Online, Teams, SharePoint, Intune, etc.)
• Experience with Microsoft 365 identity and security controls, including Entra ID, MFA, Conditional Access, and endpoint compliance.
• Experience with VPN client installation and troubleshooting
• Ability to detect, mitigate, and recover from malware and security incidents
• Excellent written and oral communication skills with a focus on high-quality documentation
• Strong time management skills and the ability to handle multiple priorities in fast-paced environments
• Professional demeanor, strong work ethic, and customer-first approach
• Willingness to provide off-hours on-call support and travel regionally as required

Education Requirements

• High School Degree or GED
• College Degree Preferred

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