IT Systems & Cloud Administrator

The Cloud Systems Administrator is responsible for managing, maintaining, and securing both on-premise and cloud-based infrastructure, including Microsoft Azure and AWS environments. This role ensures the reliability, performance, and security of enterprise systems by administering operating systems, cloud services, and infrastructure components.

The Cloud Systems Administrator is responsible for managing, maintaining, and securing both on-premise and cloud-based infrastructure, including Microsoft Azure and AWS environments. This role ensures the reliability, performance, and security of enterprise systems by administering operating systems, cloud services, and infrastructure components. The position plays a key role in system modernization, cloud integration, and infrastructure optimization, including backups, disaster recovery, and system upgrades.

The Cloud Systems Administrator proactively monitors system health, implements security best practices, and resolves technical issues across hybrid environments. This role collaborates with IT leadership to recommend and implement scalable, secure solutions that support business operations. Additionally, this role supports emerging technologies, including AI/ML-related infrastructure and cloud-based AI services, as part of the organization’s evolving technology landscape. Employees designated as onsite or hybrid are expected to be onsite at Rigel’s South San Francisco headquarters during business hours on Wednesdays and Thursdays each week.

Employees designated as remote are expected to be onsite during business hours on Wednesdays and Thursdays at least twice per month, and more frequently as business needs require.

• Manage and secure hybrid infrastructure including on-premise systems and cloud platforms (Azure and AWS)
• Administer cloud services including identity (Entra  / IAM), compute, storage, networking, and security controls
• Maintain servers, virtualization platforms, storage systems, and network infrastructure
• Assist in the deployment, monitoring, and support of AI/ML-related infrastructure and cloud-based AI services (e.g., Azure AI, AWS AI/ML), including associated compute, storage, and security components

• Monitor system performance, availability, and security using monitoring and logging tools
• Perform system maintenance including patching, upgrades, and lifecycle management
• Implement and maintain backup and disaster recovery solutions across on-prem and cloud environments

• Enforce security policies, perform vulnerability assessments, and respond to security events
• Manage access controls, identity systems, and compliance configurations across platforms

• Recommend and implement system and cloud enhancements to improve performance, scalability, and cost efficiency
• Participate in infrastructure projects including cloud migrations and system upgrades

• Troubleshoot hardware, software, networking, and cloud-related issues
• Provide Tier 2/3 support and assist with Help Desk escalations
• Support Microsoft 365 and enterprise applications

• Develop and maintain system documentation, SOPs, and architecture diagrams
• Participate in change management and operational planning

• Bachelor's degree in Information Systems, Computer Science, or related field (or equivalent experience)
• 3-5+ years of experience in Systems Administration in a hybrid (on-premise and cloud) environment
• Strong experience administering Windows Server environments, including AD, DNS, and DHCP
• Hands-on experience with Microsoft Azure services, including Entra …