Systems & Network Administrator at Cytek Biosciences managing servers, networks, and security infrastructure. Hands-on role focusing on proactive infrastructure management and team collaboration.
Responsibilities
Manage our VM environment, maintain our VPN and network infrastructure across multiple sites, and handle server provisioning and storage.
Work closely with our Information Security Specialist on security-related infrastructure changes.
Partner with helpdesk and business systems teams to reduce operational burden and improve service delivery.
Administer and maintain Windows and Linux server environments, including virtual machines (VMware/Hyper-V) and cloud resources (Azure, AWS).
Manage server provisioning, capacity planning, storage allocation, and decommissioning.
Own backup and disaster recovery processes, including regular validation and testing.
Monitor system health, performance, and availability; resolve issues before they become outages.
Manage and troubleshoot LAN/WAN, Wi-Fi, VPN (Cisco AnyConnect), DNS, DHCP, and switching infrastructure.
Support multi-site connectivity between Fremont, Seattle, and international offices.
Handle network access requests, VPN setup, and connectivity issues as an escalation point from the helpdesk.
Maintain and document network topology, configurations, and access controls.
Implement firewall and network changes as directed by the Information Security Specialist.
Administer Active Directory, Group Policy, and user account lifecycle (provisioning, changes, deprovisioning).
Manage DUO MFA enrollment and troubleshooting in coordination with the Information Security Specialist on policy configuration.
Support onboarding and offboarding processes from an infrastructure and access perspective.
Apply OS and firmware patches to servers, network devices, and infrastructure components on schedules defined in coordination with the Information Security Specialist.
Maintain patching documentation and change logs.
Coordinate maintenance windows with stakeholders to minimize business disruption.
Serve as Tier 2/3 escalation for infrastructure-related helpdesk tickets.
Reduce reactive ticket volume by implementing monitoring, automation, and self-service solutions.
Document infrastructure environments, runbooks, and standard operating procedures.
Partner with business systems team on integration points (NetSuite, Salesforce, Propel) where infrastructure supports application performance.
Support the Information Security Specialist during incident response by providing infrastructure access, logs, and system-level remediation as needed.
Requirements
10 years of experience in systems administration, network administration, or a combined infrastructure role
Strong hands-on experience with Windows Server, Active Directory, and Group Policy
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