Senior Systems Administrator

Scale Computing•Austin, TX

27d

About The Position

Scale Computing is hiring a Senior Systems Administrator to own the reliability, security, and performance of the infrastructure its teams depend on. The role manages server, virtualization, identity, and cloud environments; leads infrastructure projects from start to finish; and serves as the senior escalation point for complex systems issues. It reports to the VP of Platform Infrastructure and partners closely with IT, Security, Engineering, and Support.

Requirements

At least 7 years of systems administration experience, including at least 3 years in a senior or lead role.
Deep hands-on expertise with Windows Server and Linux, such as RHEL or Ubuntu.
Strong experience with virtualization platforms such as 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, including TCP/IP, VLANs, firewalls, VPN, and load balancing.
Proven experience with backup, recovery, and disaster recovery planning.
Clear written and verbal communication skills, including the ability to explain technical issues to non-technical colleagues.
Bachelor's degree in a related field or equivalent practical experience.

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, including Active Directory, Entra ID/Azure AD, SSO, and MFA, and enforce least-privilege practices.
Design and maintain backup, disaster recovery, and business continuity plans, and test them regularly.
Monitor system health, respond to incidents, lead root-cause analysis, and prevent recurring issues.
Automate repetitive tasks and configuration using scripting 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 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.