Michael Johnson
@michaeljohnson3
I’m a senior Windows and cloud systems administrator who improves uptime through automation, patching, and reliable enterprise infrastructure.
United StatesWhat I'm looking for
I’ve supported mission-critical enterprise Windows environments for global financial institutions for 25+ years, including infrastructures exceeding 8,000 servers. I specialize in Windows Server, VMware, Azure, SCCM, Active Directory, and enterprise patch management to maintain highly available production systems.
In my current role, I provide enterprise Windows infrastructure administration across on-prem, VMware, and Azure, and I lead Credit Suisse Windows integration into UBS infrastructure. I direct patch strategy, coordinate cross-functional infrastructure changes, mentor junior administrators, and serve as an escalation point for critical production incidents.
I’ve consistently improved reliability and reduced downtime by automating operational tasks with PowerShell and using tools such as Tanium and SCCM. From quarterly maintenance windows impacting thousands of production servers to disaster recovery testing and on-call support, I focus on dependable execution, health verification, and 99.9% uptime expectations.
Experience
Work history, roles, and key accomplishments
UBS Infrastructure Engineer
Credit Suisse | UBS
Mar 2023 - Jun 2026 (3 years 3 months)
Provided enterprise Windows infrastructure administration across on-prem, VMware, and Azure, including patch strategy and escalation for critical incidents. Led consolidation of Credit Suisse Windows infrastructure into UBS, performed HNAS to NetApp migrations, and automated patching/account management with PowerShell while maintaining >99% operational availability.
L3 Senior Windows Systems Administrator
Credit Suisse
May 2000 - Mar 2023 (22 years 10 months)
Supported and maintained 8,000+ on-prem Windows servers hosted on VMware ESXi and HP ProLiant systems, serving as the regional Windows event management lead for business continuity/DR testing and quarterly maintenance. Managed mass deployment of security patches via SCCM, performed vulnerability remediation, troubleshot PKI certificate issues for HTTPS/FTPS connectivity, and supported SQL Server A
Education
Degrees, certifications, and relevant coursework
New York Institute of Technology
Bachelor of Science, Computer Science
Earned a Bachelor of Science in Computer Science from New York Institute of Technology.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
Job categories
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