Senior System Administrator; MSP/Partial WFH
Remote / Online - Candidates ideally in
San Dimas, Los Angeles County, California, 91773, USA
Listed on 2026-09-08
San Dimas, Los Angeles County, California, 91773, USA
Listing for:
Bowman Williams
Remote/Work from Home
position Listed on 2026-09-08
Job specializations:
-
IT/Tech
Systems Administrator, Windows Server, Cloud Computing: Infrastructure & Operations, Azure
Job Description & How to Apply Below
Senior System Administrator (MSP / Partial WFH)
Work Model:
Partial FH
Base Salary: $115,000 to $130,000
MSP
Experience:
Required
We are a growing Managed Services Provider hiring a Senior System Administrator to support advanced infrastructure, Microsoft cloud, security, and project work across multiple client environments.
This is a strong fit for an experienced MSP engineer who wants more ownership, more technical variety, and a clear path to deeper systems, cloud, security, and infrastructure work.
You will act as a senior escalation resource while also contributing to projects involving Microsoft 365, Azure, Entra , Intune, Windows Server, networking, endpoint security, automation, and client environment improvements.
What You Will Work On- Serve as a senior technical resource for escalated systems, cloud, network, endpoint, and security issues
- Administer Windows Server, Active Directory, Group Policy, DNS, DHCP, file services, and core client infrastructure
- Support Microsoft 365, Exchange Online, SharePoint, Teams, Entra , Azure, Intune, and endpoint management environments
- Troubleshoot and improve firewalls, switches, VPNs, wireless, VLANs, routing, and general network connectivity
- Lead or assist with infrastructure projects including migrations, deployments, upgrades, onboarding, cloud improvements, and security initiatives
- Support endpoint security, backup, disaster recovery, patching, monitoring, and compliance related improvements
- Work with RMM, PSA, documentation, and automation tools to maintain strong service delivery standards
- Partner with service desk, project, and leadership teams to improve client environments and reduce recurring issues
- Communicate clearly with clients, document technical work accurately, and maintain strong ownership through resolution
- 5+ years of IT support or systems administration experience
- Recent MSP experience supporting multiple client environments is required
- Strong Windows Server, Active Directory, Microsoft 365, Entra , Azure, and Intune experience
- Experience with virtualization, backups, endpoint security, patching, and disaster recovery tools
- Solid networking knowledge across DNS, DHCP, VLANs, VPNs, firewalls, switching, wireless, and routing
- Ability to troubleshoot advanced issues across systems, cloud, networking, endpoints, and security platforms
- Experience contributing to infrastructure projects, migrations, deployments, or client environment improvements
- Strong documentation, communication, ticketing, prioritization, and client service skills
- Ability to work independently while collaborating with technical teams in a fast moving MSP environment
- Microsoft certifications such as AZ 104, MS 102, MD 102, SC 300, or related credentials
- Network+, Security+, CCNA, or similar technical certifications
- Experience with Connect Wise, Autotask, Ninja, Datto, Atera, IT Glue, Hudu, or similar MSP tools
- Exposure to Power Shell, automation, AI enabled service delivery, or process improvement
- Experience mentoring junior technicians or acting as a technical escalation lead
- $115,000 to $130,000 base salary
- Health insurance effective on day one
- Vision, Dental, Critical Care, Accident, and Disability Insurance options
- Medical and Dependent Care FSA
- Employee Assistance Program, discounts, and additional perks
- 401(k) with company match
- Paid holidays and PTO
- Technology certification reimbursement program
- Salary increases for each certification passed
- Strong technical growth across Microsoft cloud, Intune, Azure, security, networking, automation, and infrastructure projects
Position Requirements
10+ Years
work experience
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