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About the Role

We're hiring a Senior Systems Administrator to own the reliability, security, and performance of the infrastructure our teams depend on every day. You'll manage our server, virtualization, identity, and cloud environments, lead infrastructure projects end to end, and serve as the top escalation point for complex systems issues. This role reports to the VP of Platform Infrastructure and partners closely with IT, Security, Engineering, and Support.

Responsibilities

Administer, patch, and maintain Windows and Linux servers across on-premises, virtualized, and cloud environments
Manage virtualization and hyperconverged infrastructure, including capacity planning, performance tuning, and lifecycle upgrades
Own identity and access management (Active Directory, Entra ID/Azure AD, SSO, MFA) and enforce least-privilege practices
Design and maintain backup, disaster recovery, and business continuity plans, and test them on a regular schedule
Monitor system health and respond to incidents, leading root-cause analysis and preventing repeat issues
Automate repetitive tasks and configuration using PowerShell, Bash, Python, or infrastructure-as-code tools
Partner with Security on vulnerability remediation, hardening, audit evidence, and compliance requirements
Lead infrastructure projects such as migrations, platform upgrades, and new tool rollouts from scoping through delivery
Maintain clear documentation, runbooks, and network and system diagrams
Mentor junior administrators and serve as the senior escalation point for the IT team
Participate in a shared on-call rotation and occasional after-hours maintenance windows

Requirements

7+ years of systems administration experience, including at least 3 in a senior or lead role
Deep hands-on expertise with Windows Server and Linux (RHEL, Ubuntu, or similar)
Strong experience with virtualization platforms (VMware, Hyper-V, KVM, or hyperconverged solutions)
Solid working knowledge of Active Directory, Entra ID/Azure AD, DNS, DHCP, and Group Policy
Experience administering at least one major cloud platform (AWS, Azure, or GCP)
Proficiency in scripting and automation with PowerShell, Bash, or Python
Working knowledge of networking fundamentals: TCP/IP, VLANs, firewalls, VPN, and load balancing
Proven experience with backup, recovery, and disaster recovery planning
Clear written and verbal communication, with the ability to explain technical issues to non-technical colleagues
Bachelor's degree in a related field or equivalent practical experience

Skills

Windows Server
Linux (RHEL, Ubuntu, or similar)
VMware
Hyper-V
KVM
Hyperconverged solutions
Active Directory
Entra ID/Azure AD
DNS
DHCP
Group Policy
AWS
Azure
GCP
PowerShell
Bash
Python
Infrastructure-as-code
TCP/IP
VLANs
Firewalls
VPN
Load balancing
Backup
Recovery
Disaster recovery planning

Experience Level

Senior

Education Level

Bachelor's degree in a related field or equivalent practical experience

About the Company

Scale Computing builds edge computing, virtualization, and hyperconverged infrastructure that keeps critical applications running wherever our customers operate, from data centers to thousands of remote sites.
We make IT simpler, more resilient, and easier to manage at scale, and we hold ourselves to the same standard internally.

Equal Opportunity

Scale Computing is an equal opportunity employer.
We welcome applicants of all backgrounds and do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other legally protected status.