Senior Systems Administrator

#### Senior Systems Administrator Flight Wave  Aerospace - A Red Cat Company  •  $110k - $137k/yr  
• Torrance, CA (Onsite)  
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Job Description
*
* Job Location:

** Torrance, CA 90503   
** Salary Range:** $ - $ Salary     
** Position Summary
** The Senior Systems Administrator will own the reliability, security, and performance of critical IT infrastructure across Microsoft 365, cloud, on-premises, endpoint, identity, and collaboration platforms. This role is ideal for a hands-on infrastructure professional who can operate independently, solve complex technical issues, improve system resiliency, and help mature IT operations in a secure, compliance-focused environment.
The Senior Systems Administrator will support both daily operations and strategic infrastructure initiatives, including Microsoft GCC High and Commercial environments, Windows/Linux server administration, Azure and AWS services, endpoint support, automation, patching, monitoring, backups, incident response, documentation, and service management.
This individual will also serve as a technical escalation point and mentor for other IT team members.

** Essential Duties and Responsibilities
** Systems, Infrastructure, and Platform Administration
- Administer, maintain, and optimize Windows, Linux, and macOS systems across endpoint, server, and cloud-hosted environments.
- Manage on-premises and cloud-based servers, including provisioning, configuration, patching, monitoring, backup validation, lifecycle management, and decommissioning.
- Support Microsoft 365 environments, including Microsoft GCC High and Microsoft Commercial tenants, with a focus on availability, security, identity, access, and user productivity.
- Administer core infrastructure services such as Active Directory, Entra /Azure AD, DNS, DHCP, Group Policy, file services, print services, certificates, and related enterprise services.
- Support Azure and AWS infrastructure, including virtual machines, storage, networking, access controls, monitoring, and cost-conscious operational practices.
- Maintain and improve system monitoring, alerting, logging, capacity planning, and performance management across business-critical infrastructure.
Security, Compliance, and Reliability
- Implement and maintain secure configuration baselines, patching standards, vulnerability remediation processes, and access control practices.
- Support security and compliance requirements for controlled or sensitive environments, including Microsoft GCC High, privileged access, audit logging, evidence collection, and change control.
- Participate in incident response, root-cause analysis, corrective action planning, and post-incident improvement activities.
- Ensure backup jobs, restore procedures, disaster recovery plans, and business continuity processes are documented, tested, and improved over time.
- Partner with security, engineering, and business stakeholders to reduce operational risk while maintaining usability and system performance.
Service Management, Support, and Documentation
- Serve as a senior escalation point for complex infrastructure, endpoint, identity, cloud, and application issues.
- Manage incidents, service requests, changes, and problem records using Jira and Jira Service Management.
- Create and maintain technical documentation, standard operating procedures, runbooks, diagrams, and knowledge-base articles in Confluence.
- Track infrastructure projects, operational tasks, and cross-functional work using tools such as Smartsheet, Jira, and Confluence.
- Communicate clearly with technical and non-technical stakeholders regarding outages, maintenance windows, risks, project status, and recommended solutions.
Application and Engineering Tool Support
- Support enterprise tools and infrastructure integrations, including Adobe Acrobat, Solid Works PDM, Git Lab, Git Hub, and Jenkins Build Server where applicable.
- Assist with access management, server dependencies, certificate renewals, integrations, storage needs, backups, and…