Senior Systems Engineer; R5443

Founded in 2015, Shield AI is a venture-backed defense-tech company with the mission of protecting service members and civilians with intelligent systems. Its products include Hivemind autonomy software and V-BAT and X-BAT aircraft. With offices and facilities across the U.S., Europe, the Middle East, and Asia-Pacific, Shield AI’s technology actively supports operations worldwide. For more information, visit (Use the "Apply for this Job" box below). Follow Shield AI on Linked In, X, Instagram, and You Tube.

The Senior Systems Administrator is responsible for the administration, support, optimization, and continuous improvement of the enterprise IT infrastructure supporting Shield AI's business operations. This role designs, implements, maintains, and troubleshoots enterprise systems across cloud, endpoint, identity, server, and collaboration platforms while ensuring secure, reliable, and scalable services.

The Senior Systems Administrator partners with Infrastructure, Networking, Security, and Engineering teams to deliver operational excellence, improve system reliability, automate administrative processes, and support strategic IT initiatives. This position serves as a technical lead for enterprise infrastructure projects and provides advanced troubleshooting for complex operational issues.

• Administer, maintain, and optimize enterprise Windows, Linux, and macOS systems supporting corporate business operations.
• Design, implement, configure, and support enterprise infrastructure including cloud services, identity management, endpoint management, collaboration platforms, and core IT systems.
• Analyze system performance, availability, and operational metrics to proactively improve reliability, scalability, and security.
• Administer Active Directory, Azure AD/Entra , Group Policy, authentication services, and role-based access controls.
• Deploy, maintain, and support endpoint management platforms including Microsoft Intune, JAMF, and related management technologies.
• Plan and execute infrastructure upgrades, migrations, patch management, and lifecycle replacement initiatives.
• Lead technical implementation of enterprise IT projects while coordinating with Infrastructure, Security, Networking, and business stakeholders.
• Troubleshoot complex infrastructure, operating system, cloud, and application issues using root cause analysis methodologies.
• Support LAN/WAN connectivity, DNS, DHCP, VPN, and network-related troubleshooting in partnership with networking teams.
• Develop automation using Power Shell, Bash, or similar scripting languages to improve operational efficiency and reduce manual administration.
• Maintain accurate system documentation, architecture diagrams, operational procedures, and knowledge base articles.
• Manage enterprise hardware and software assets throughout their lifecycle including procurement, deployment, maintenance, and decommissioning.
• Participate in incident response, change management, disaster recovery planning, and business continuity activities.
• Participate in an on-call rotation and perform scheduled maintenance outside normal business hours as required.
• Mentor junior administrators and provide technical guidance across the Enterprise IT organization.

• Bachelor’s degree in information technology, Computer Science, or equivalent practical experience.
• 5+ years of progressively responsible experience administering enterprise IT infrastructure and systems.
• Strong experience supporting Windows, Linux, and macOS operating systems within enterprise environments.
• Advanced knowledge of Microsoft Active Directory, Azure AD (Entra ), Group Policy, DNS, DHCP, and identity management.
• Experience administering Microsoft 365 services including Exchange Online, Teams, SharePoint, and Intune.
• Experience managing endpoint platforms such as JAMF, Intune, or Microsoft Endpoint Manager.
• Working knowledge of networking fundamentals including TCP/IP, routing, VPN, DNS, firewalls, and network troubleshooting.
• Experience supporting enterprise cloud infrastructure and SaaS platforms.
• Strong troubleshooting, analytical, and root cause analysis skills across operating systems, infrastructure, and…