On-Site Systems Administrator – Windows, Cloud & Security

Air Treatment Corporation; Brea (CA); On-site; USD 85,000 - 120,000; Full time

Job summary

Air Treatment Corporation is seeking a Systems Administrator to manage and maintain our IT infrastructure, ensuring high performance, security, and reliability. The role emphasizes Windows server management, Hyper-V virtualization, cloud familiarity, scripting, and strong documentation practices.

The position requires participating in disaster recovery planning, capacity planning, and cross-team collaboration. On-site in Brea, CA with on-call support as needed.

Qualifications

• Experience managing Windows Server environments
• Familiarity with Hyper-V virtualization
• Knowledge of networks, firewalls, and security
• Experience with AWS or Azure cloud
• Experience with monitoring and performance tools
• Scripting in Bash/PowerShell/Python
• Strong problem-solving and communication skills
• Ability to manage multiple tasks and projects
• Knowledge of backup/recovery
• Experience with Active Directory and Group Policy

Responsibilities

• Install, configure, and maintain operating systems, software, and hardware.
• Monitor system performance and ensure availability and reliability.
• Administer and maintain system security and backup protocols.
• Troubleshoot hardware, software, and network issues.
• Apply patches and upgrades for optimal performance.
• Manage user accounts and access rights.
• Collaborate with IT to enhance security and efficiency.
• Document systems and processes.
• Ensure compliance with policies and regulations.
• Provide end-user technical support and guidance.
• Plan system capacity and resource planning.
• Automate tasks with scripts and config management tools.
• Participate in disaster recovery planning and testing.
• Evaluate new technologies to improve infrastructure efficiency.

Skills

Windows Server

Hyper-V

Networking & Security

Cloud Platforms

Monitoring Tools

Scripting Bash

Scripting PowerShell

Scripting Python

Active Directory

Group Policy

On-call Support

Education

Bachelor's degree in Computer Science or IT

Relevant certifications (CompTIA, MCSE)

Tools

None specified

Job description

Air Treatment Corporation is seeking a Systems Administrator to manage and maintain our IT infrastructure, ensuring high performance, security, and reliability. The role emphasizes Windows server management, Hyper-V virtualization, cloud familiarity, scripting, and strong documentation practices.

The position requires participating in disaster recovery planning, capacity planning, and cross-team collaboration. On-site in Brea, CA with on-call support as needed.