Senior Systems Administrator, Cloud & Enterprise Infra

Penumbra; Roseville (CA); On-site; USD 126,000 - 180,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Life insurance

Disability insurance

401(k) with employer match

Paid parental leave

Paid holidays

Vacation days

Sick time

Job summary

Penumbra, Inc. in California is seeking a Senior Systems Administrator to lead the administration, optimization, and recovery of enterprise IT across on-premises and cloud environments.

The role covers a broad stack including Microsoft Azure IaaS/PaaS, Microsoft 365, AD/Entra ID, PKI, virtualization (Hyper-V/VMware), storage and backup, and integration platforms such as SAP and Dell Boomi. You will work with a global team to ensure security, reliability, and scalability.

Qualifications

• Bachelor’s degree in Engineering, CS, IT, or related field with 8+ years of enterprise-level systems administration and/or engineering experience.
• 8+ years of experience supporting Microsoft Technologies, including Windows Server, Active Directory/Entra ID, ADFS, DNS, DHCP, PowerShell, Intune, and SCCM/SCOM.
• 5+ years of experience supporting Microsoft Azure IaaS/PaaS and Microsoft 365 services, including Exchange Online, OneDrive, SharePoint, Microsoft Teams, etc.
• Experience supporting SAN/NAS storage environments.
• Experience with enterprise backup and recovery procedures.
• Strong troubleshooting and problem-solving skills in Windows operating systems and TCP/IP networking.
• Experience deploying, configuring, and maintaining on-premises virtualization platforms, including Hyper-V and VMware.
• Experience installing, configuring, and maintaining PKI or similar certificate management tools.
• Experience automating infrastructure provisioning (IaC) and configuration management.
• Experience onboarding applications for SSO, with a strong understanding of SAML and OpenID protocols.
• Azure Solutions Architect Expert certification or equivalent experience.
• Experience administering ERP and integration platforms, such as SAP and Dell Boomi.
• Experience with Cisco UCS and other network hardware administration.
• DevOps experience in configuration management and infrastructure automation.
• Ability to plan, organize, and document complex system design activities and configure systems in alignment with institutional policies and procedures.
• Ability to manage multiple priorities, handle concurrent projects, and respond effectively to urgent or complex operational issues.
• High degree of accuracy, attention to detail, and organizational skill.

Responsibilities

• Manage day-to-day operations of infrastructure hardware and software, including system performance, configuration, maintenance, patching, and repair.
• Administer, maintain, and optimize enterprise systems across on-premises and cloud environments.
• Apply revisions to host system firmware and software. Works with vendors to assist support activities.
• Support core infrastructure services, including Active Directory, DNS, DHCP, Microsoft PKI, Microsoft Entra ID, Group Policy, SCCM, Intune, Bitlocker, Key Management, Privileged Identity Management, Log Analytics, and Digital Rights Management
• Manage and support SAN/NAS storage infrastructure to ensure high availability, performance, capacity, and scalability.
• Maintain enterprise backup and recovery systems, including procedures, documentation, and restoration processes for host operating systems, and host-based applications.
• Support Microsoft Azure IaaS/PaaS, Microsoft 365, Windows Server, Linux Server, and related infrastructure platforms.
• Perform system health monitoring, capacity planning, lifecycle management, patching, and firmware/software updates.
• Support virtualization platforms, including Hyper-V and VMware.
• Provide after hours on-call support on a rotation schedule with other staff members
• Lead troubleshooting and root-cause analysis for complex infrastructure issues, working with vendors and internal support teams as needed.
• Develop and maintain infrastructure automation capabilities to improve service delivery, operational efficiency, and business continuity.
• Create tools, procedures, and documentation to support Client Support, Applications Development, and other internal teams.
• Recommend system redesigns, configuration changes, and technology improvements to strengthen performance, reliability, security, and scalability.
• Stay current with developments in systems administration, infrastructure automation, cloud services, and enterprise security technologies.

Skills

Windows Server

Active Directory/Entra ID

DNS

DHCP

PowerShell

Intune

SCCM/SCOM

Azure IaaS/PaaS

Microsoft 365

Exchange Online

OneDrive

SharePoint

Microsoft Teams

SAN/NAS Storage

Backup & Recovery

Hyper-V

VMware

PKI

IaC / Automation

SAML/OpenID

Azure Architect

SAP

Dell Boomi

Cisco UCS

DevOps

Education

Bachelor's degree in Engineering/CS/IT

Tools

SCCM/SCOM

Intune

Azure IaaS/PaaS

Job description

Penumbra, Inc. in California is seeking a Senior Systems Administrator to lead the administration, optimization, and recovery of enterprise IT across on-premises and cloud environments.

The role covers a broad stack including Microsoft Azure IaaS/PaaS, Microsoft 365, AD/Entra ID, PKI, virtualization (Hyper-V/VMware), storage and backup, and integration platforms such as SAP and Dell Boomi. You will work with a global team to ensure security, reliability, and scalability.