Senior Systems Administrator (Onsite – East Valley, AZ)

Location: East Valley, Maricopa County, AZ
Employment Type: Full-Time, Onsite
Industry: Managed Service Provider (MSP)
Compensation: $35 – $45 per hour (DOE) + benefits

About the Role

A growing Managed Service Provider (MSP) in the East Valley is seeking a skilled and motivated Senior Systems Administrator to join our team. This position is ideal for a hands-on IT professional who thrives in dynamic environments, enjoys working directly with clients, and can confidently manage complex systems across multiple businesses.

You’ll be responsible for supporting and optimizing a wide range of client infrastructures—including servers, networks, and cloud environments—while providing leadership to junior technical staff and ensuring high-quality service delivery. Strong usage of SonicWall Firewalls for all client site security; must have hands on, upper level experience with SonicWall.

Key Responsibilities

• Administer and support Windows and Linux servers, virtualization platforms, and network systems.
• Manage Microsoft 365, Azure AD, and related identity management services.
• Oversee backup, disaster recovery, and business continuity implementations.
• Monitor and maintain system performance across multiple client environments.
• Configure and manage switches, firewalls, and wireless networks (SonicWall, Meraki, Ubiquiti, Fortinet, etc.).
• Lead client onboarding, infrastructure assessments, and project rollouts.
• Serve as an escalation point for Tier 1 and Tier 2 support technicians.
• Maintain thorough documentation within RMM and PSA systems.
• Deliver exceptional customer service and maintain strong client relationships.

Required Qualifications

• 5–7+ years of experience as a Systems Administrator or similar IT role (MSP experience strongly preferred).
• Advanced knowledge of Microsoft Windows Server and virtualization (VMware or Hyper-V).
• Solid understanding of networking, including VLANs, VPNs, routing, and firewalls.
• Experience with Microsoft 365, Azure, and Exchange administration.
• Proficiency with RMM/PSA tools (e.g., ConnectWise, NinjaOne, Datto, or similar).
• Strong troubleshooting skills and ability to multitask across environments.
• Excellent communication and documentation habits.
• Valid driver’s license and reliable transportation (onsite client work required).

Preferred Qualifications

• Industry certifications such as CompTIA Network+, Security+, Microsoft Certified: Azure Administrator, or CCNA.
• Experience with scripting and automation (PowerShell, Bash, or Python).
• Familiarity with cybersecurity best practices and compliance frameworks (NIST, CIS, HIPAA).

Compensation and Benefits

• Hourly Pay: $35 – $45 per hour, depending on experience
• Medical coverage
• Paid Time Off (PTO) and Sick Time
• Certification reimbursement and ongoing professional development opportunities
• Supportive, team-oriented culture with an emphasis on work-life balance

Job Type: Full-time

Pay: $35.00 - $45.00 per hour

Benefits:

• Dental insurance
• Flexible schedule
• Health insurance
• Paid time off
• Professional development assistance
• Vision insurance

Experience:

• RMM: 5 years (Required)
• IP networking: 5 years (Required)
• Information security: 5 years (Required)

Ability to Commute:

• Tempe, AZ 85281 (Required)

Work Location: Hybrid remote in Tempe, AZ 85281