Senior Systems Administrator

As a Senior Systems Administrator at Penumbra, you will play a critical role in determining the company's long‑term goals. You will be responsible for the administration, implementation, optimization, maintenance, and recovery of enterprise systems across on‑premises and cloud‑based environments. This role serves as a subject matter expert for complex operating systems and core infrastructure services, supporting system availability, performance, security, and scalability.

Working as part of an international support team, the Sr. System Administrator recommends and implements improvements to infrastructure systems, operating platforms, and related applications. Systems supported may include Microsoft Azure IaaS, PaaS, Microsoft Office 365, EntraID, MFA, Information Protection, Active Directory, MS Windows Server, Linux Server OS, SAN/NAS storage, enterprise backup platforms, and related infrastructure technologies. The role may also support infrastructure configurations related to ERP and integration platforms, including SAP and Dell Boomi.

• Manages the day‑to‑day operations of infrastructure hardware and software, including system performance, configuration, maintenance, patching, and repair.
• Administers, maintains, and optimizes enterprise systems across on‑premises and cloud environments.
• Applies revisions to host system firmware and software and works with vendors to assist support activities.
• Supports core infrastructure services, including Active Directory, DNS, DHCP, Microsoft PKI, Microsoft Entra , Group Policy, SCCM, Intune, Bitlocker, Key Management, Privileged Identity Management, Log Analytics, and Digital Rights Management.
• Manages and supports SAN/NAS storage infrastructure to ensure high availability, performance, capacity, and scalability.
• Maintains enterprise backup and recovery systems, including procedures, documentation, and restoration processes for host operating systems and host‑based applications.
• Supports Microsoft Azure IaaS/PaaS, Microsoft 365, Windows Server, Linux Server, and related infrastructure platforms.
• Performs system health monitoring, capacity planning, lifecycle management, patching, and firmware/software updates.
• Supports virtualization platforms, including Hyper‑V and VMware.
• Provides after‑hours on‑call support on a rotation schedule with other staff members.

• Leads troubleshooting and root‑cause analysis for complex infrastructure issues, working with vendors and internal support teams as needed.
• Develops and maintains infrastructure automation capabilities to improve service delivery, operational efficiency, and business continuity.
• Creates tools, procedures, and documentation to support client support, applications development, and other internal teams.
• Recommends system redesigns, configuration changes, and technology improvements to strengthen performance, reliability, security, and scalability.
• Stays current with developments in systems administration, infrastructure automation, cloud services, and enterprise security technologies.

• Enforces established procedures and governance policies to maintain security and protect infrastructure from unauthorized access, misuse, and service disruption.
• Understands and applies relevant security, privacy, compliance, and quality principles in accordance with company policies and applicable regulations.
• Maintains procedures, programs, and documentation for backup and restoration of host operating systems and host‑based applications.

• A Bachelor’s degree in Engineering, Computer Science, Information Technology, or a related field with 8+ years of enterprise‑level systems administration and/or engineering experience; or an equivalent combination of education and experience.
• 8+ years of experience supporting Microsoft technologies, including Windows Server, Active Directory/Entra , ADFS, DNS, DHCP, Power Shell, Intune, and SCCM/SCOM.
• 5+ years of experience supporting Microsoft Azure IaaS/PaaS and Microsoft 365 services, including Exchange Online, One Drive, SharePoint,…