Systems Administrator

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

Job Summary

The Systems Administrator is responsible for managing and maintaining our organization's IT infrastructure, ensuring optimal performance, security, and reliability.

Air Treatment Corporation is a dynamic, collaborative work environment. We understand the expectations of high–quality customer service, therefore we actively search and promote a cohesive team that is formulated to exceed expectations. We are devoted to the growth of our employees and look to provide opportunities for advancement from within.

Duties/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 and resolve hardware, software, and network issues.
• Perform regular system upgrades and apply patches to ensure optimal performance.
• Manage user accounts, permissions, and access rights.
• Implement and manage system and network configurations.
• Collaborate with IT team members to enhance security and efficiency.
• Maintain comprehensive documentation of systems and processes.
• Ensure compliance with company policies and industry regulations.
• Provide technical support and guidance to end-users.
• Plan and execute system capacity and resource planning.
• Automate routine tasks using scripts and configuration management tools.
• Participate in disaster recovery planning and testing.
• Evaluate and recommend new technologies to improve infrastructure efficiency.

Requirements

• Proficiency in managing and configuring Windows server environments
• Experience with virtualization technologies (Windows Hyper-V)
• Strong understanding of network protocols, firewalls, and security principles
• Familiarity with cloud platforms like AWS or Azure
• Experience with system monitoring and performance tuning tools
• Proficient in scripting languages such as Bash, PowerShell, or Python
• Strong problem‑solving skills and attention to detail
• Excellent communication and documentation skills
• Ability to manage and prioritize multiple tasks and projects
• Knowledge of backup and recovery solutions
• Experience with Active Directory and Group Policy management
• Availability for on‑call support and emergency response as needed

Education And Experience

• Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent experience
• Proven experience as a Systems Administrator or in a similar role
• Relevant certifications such as CompTIA A+, Network+, Security+, or Microsoft Certified Solutions Expert (MCSE) preferred.

Physical Requirements

• Prolonged periods sitting at a desk and working on a computer.
• Frequent use of hands and fingers to operate a computer keyboard, mouse, and other technical equipment.
• Ability to occasionally stand, walk, bend, kneel, or crouch to install or troubleshoot equipment.
• Ability to lift and move equipment up to 25–50 pounds (computers, monitors, printers, network equipment).
• Visual ability to read screens, technical documents, and equipment labels.
• May require travel between office locations or facilities.
• On-site position, no relocation provided.

At Air Treatment Corporation, we are committed to growth, innovation, and excellence. As leading experts in HVAC & R solutions, we recognize that the success of our team drives the success of our company. This is echoed in our commitment to a workplace built on fairness, professionalism, and opportunity, ensuring that every team member is valued. Join our team and contribute your unique skills and perspectives to help us continue delivering industry‑leading solutions.

Hiring Manager: Matt Lowe

Location: Brea, CA

Estimated Pay Range: $85,000.00 - $120,000.00

Compensation details: 85000-120000 Yearly Salary