Senior Systems Administrator — Windows, VMware & Automation

Atwell, LLC; Chandler (AZ); On-site; USD 85,000 - 110,000; Full time

Benefits offered by this job

Generous PTO

Parental Leave

Tuition Assistance

Health Insurance

401K match

Job summary

Atwell, LLC is seeking a Systems Administrator to support our West Coast infrastructure from the Phoenix/Scottsdale area. This role will cover Windows Server, Active Directory, VMware, and backup technologies, with opportunities to lead projects and mentor teammates.

The position requires 5+ years in systems administration and a strong focus on security, reliability, and scalable infrastructure. Travel to Atwell offices may be required.

Qualifications

• 5+ years of hands-on experience in systems administration, infrastructure engineering, or a closely related technical role.
• Strong experience administering Windows Server and Active Directory environments.
• Hands-on experience with VMware vCenter, ESXi, and virtual machines.
• Experience supporting enterprise backup and recovery technologies.
• Experience managing enterprise storage, permissions, and distributed file systems.
• Strong working knowledge of Microsoft 365 and Windows environments.
• Working knowledge of TCP/IP, DNS, DHCP, routing, switching, VLANs, and virtual networking.
• Experience using PowerShell for scripting, automation, or administrative tasks.
• Strong documentation and communication skills.

Responsibilities

• Build, configure, maintain, patch, upgrade, and troubleshoot Windows Server environments.
• Administer Active Directory, Group Policy, DNS, DHCP, and related Windows infrastructure services.
• Support Microsoft 365 and hybrid identity services.
• Manage user, service, system, group, and administrative access in accordance with established security standards.
• Support certificate services, PKI, and related infrastructure where applicable.
• Develop and maintain standardized operating system deployments and software packages.
• Administer VMware vCenter and ESXi environments.
• Build, configure, maintain, troubleshoot, and retire virtual machines.
• Monitor host and virtual machine health, performance, capacity, and availability.
• Assist with infrastructure upgrades, migrations, lifecycle planning, and technology refresh initiatives.
• Monitor infrastructure health through VMware, SNMP, RMM, hardware monitoring, backup, and related platforms.
• Investigate system alerts, logs, failed jobs, performance issues, and infrastructure events.
• Deploy and configure monitoring agents, alerts, software packages, and automation.
• Build and maintain PowerShell scripts to automate repetitive tasks, improve consistency, and reduce manual administration.
• Identify opportunities to improve system reliability, performance, scalability, and operational efficiency.
• T ravel to Atwell offices when needed to support technology infrastructure.

Skills

Windows Server

Active Directory

PowerShell

Microsoft 365

Networking basics

Security best practices

Education

Bachelor's degree in Computer Science or related field

Tools

VMware vCenter

ESXi

Veeam

Backup Exec

Job description

Atwell, LLC is seeking a Systems Administrator to support our West Coast infrastructure from the Phoenix/Scottsdale area. This role will cover Windows Server, Active Directory, VMware, and backup technologies, with opportunities to lead projects and mentor teammates.

The position requires 5+ years in systems administration and a strong focus on security, reliability, and scalable infrastructure. Travel to Atwell offices may be required.