System Administrator – Windows, VMWare

Pythian

System Administrator managing Windows Server and VMware environments for a global data solutions company. Collaborating on infrastructure planning, upgrades, and providing client technical support.

Posted 5/30/2026full-timeRemote • 🇺🇸 United StatesSeniorLeadWebsite

Tech Stack

Tools & technologies

AzureDNSNFSTCP/IPVMware

About the role

Key responsibilities & impact

Administer and maintain Windows Server environments (primarily Windows Server 2016, 2019 and later), including installation, configuration, patching, and performance tuning.
Manage and support core Microsoft services, including Active Directory Domain Services (AD DS), Group Policy Objects (GPOs), DNS, NTP and DHCP.
Manage and support VMware infrastructure, including vSphere, vCenter Server, ESXi hosts, VMware HA, and DRS configurations.
Support and maintain virtual and physical server infrastructure within datacenter hosting environments.
Perform monthly patching across multiple servers and ESXi hosts using centralized patch management tools and processes.
Implement and maintain security best practices to protect systems and data; support vulnerability management processes.
Provide technical support to clients, effectively troubleshooting and resolving issues related to Windows and VMware environments.
Provide Problem Management support, including Root Cause Analysis (RCA) for client-impacting incidents and resolving complex underlying issues.
Collaborate with team members on infrastructure planning, upgrades, migrations, and changes.
Assist with server decommissioning and migration activities as required.
Maintain clear and accurate documentation for system configurations, procedures, and troubleshooting guides.
Coordinate effectively with vendors for technical support and procurement.
Participate in an on-call rotation in an escalation capacity.

Requirements

What you’ll need

8 to 10 years of overall experience in IT infrastructure administration, with at least 5+ years of hands-on experience in both Windows Server and VMware administration.
Strong experience in Windows Server administration (Windows Server 2016, 2019 and later).
Proficiency in VMware virtualization technologies (VMware vSphere, vCenter Server, ESXi, Update Manager, HA, DRS).
Experience managing VMware datastores and familiarity with underlying storage concepts (e.g., SAN, NAS, iSCSI, NFS).
Experience in PowerShell scripting for task automation and system administration.
Understanding of core networking concepts (TCP/IP, DNS, DHCP, VLANs, Firewall basics).
Proven experience supporting infrastructure within datacenter hosting environments.
Relevant certifications (e.g., VCP-DCV, Microsoft Certified: Azure Administrator Associate or similar) are a plus.

Benefits

Comp & perks

Competitive total rewards package
Flexibly work remotely from your home, there’s no daily travel requirement to an office!
Substantial training allowance; participate in professional development days, attend training, become certified, whatever you like!
Annual wellness budget to make yourself a priority (use it on gym memberships, massages, fitness and more).
Generous amount of paid vacation and sick days, as well as a day off to volunteer for your favorite charity.

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Windows Server 2016Windows Server 2019VMware vSpherevCenter ServerESXiPowerShell scriptingDNSDHCPNTPGroup Policy Objects

Soft Skills

technical supporttroubleshootingcollaborationdocumentationproblem managementroot cause analysiscommunicationvendor coordination

Certifications

VCP-DCVMicrosoft Certified: Azure Administrator Associate