Senior Systems Engineer

We are looking for a Senior Systems Engineer to strengthen and advance a secure, high-performing technology environment in San Francisco, California. This position plays a central role in support the infrastructure strategy across cloud services, on-premises systems, and network operations while ensuring dependable service delivery. Responsibilities:• Oversee the performance, security, and availability of infrastructure across internal and client-facing environments, including ownership Microsoft 365, Azure AD, Active Directory platforms.• Administer core security technologies such as Palo Alto firewalls, endpoint protection tools, and mobile device management solutions to protect systems and data.• Drive infrastructure initiatives from planning through execution, including upgrades, deployments, and improvements that support business and operational goals.• Provide advanced technical support for workstations, servers, mobile hardware, and telecommunications systems, resolving complex issues with urgency and precision.• Maintain accurate technical records, software inventories, patch schedules, and operational procedures to support compliance and continuity.• Partner with external service providers and internal teams to coordinate reliable, secure, and efficient infrastructure operations.• Deliver responsive support to senior leadership and participate in an after-hours on-call rotation as needed to maintain service stability.• Travel periodically to client locations to assist with network deployments, troubleshooting, and project-related implementation work.