Staff Systems Administrator, Shield AI

• 8 + years of experience in systems administration, infrastructure engineering, enterprise IT operations, or a closely related discipline
• Demonstrated success independently owning production IT infrastructure and end-user environments in a complex, regulated, segmented, or security-sensitive organization
• Strong hands-on expertise with Windows, macOS, and Linux; server administration and virtualization; Azure and/or AWS; and Active Directory and Entra ID or equivalent identity platforms
• Practical experience implementing system and endpoint hardening, configuration baselines, patch management, vulnerability remediation, encryption, endpoint detection and response, and least-privilege controls
• Experience supporting security or compliance programs and producing evidence for audits, assessments, or customer and regulatory requirements
• Strong networking knowledge, including TCP/IP, DNS, DHCP, VLANs, routing, VPNs, network segmentation, firewall policy, and secure remote access
• Experience with endpoint management platforms such as Intune, Jamf, or equivalent, including compliance policy and device lifecycle management
• Experience implementing and testing monitoring, backup, disaster recovery, and business-continuity capabilities
• Excellent documentation, prioritization, risk communication, and stakeholder-management skills, with the ability to drive outcomes under limited supervision
• Ability to support time-sensitive operational needs and participate in planned after-hours maintenance or incident response when required

Desirable

• Shield AI is seeking a highly autonomous Staff Systems Administrator to serve as the accountable technical owner for enterprise IT infrastructure and end-user computing within a dedicated, security-sensitive entity environment
• This senior individual contributor will design, implement, operate, secure, and continuously improve on-premises systems, cloud platforms, identity services, networks, and endpoints while preserving required legal, operational, information-security, and access boundaries
• The role combines deep infrastructure ownership with hands-on service delivery
• The successful candidate will translate security and compliance requirements into durable technical controls, maintain audit-ready evidence, drive equipment and endpoint hardening, and deliver resilient support to engineering and business teams with minimal oversight
• Own and operate on-premises and cloud infrastructure, including physical and virtual servers, storage, backup platforms, identity services, core network services, and enterprise applications
• Administer Azure and/or AWS environments with responsibility for availability, capacity, performance, monitoring, secure configuration, backup, and disaster-recovery readiness
• Define technical roadmaps, identify operational risks, and independently drive modernization, standardization, scalability, and resilience improvements
• Maintain accurate architecture diagrams, inventories, operating procedures, recovery documentation, configuration records, and service ownership information
• Plan and execute infrastructure changes using disciplined change, testing, rollback, and post-implementation review practices
• Operate technology services for a dedicated legal or operating entity with explicit separation of systems, identities, data, administration, suppliers, and access from other corporate environments where required
• Implement and maintain approved trust boundaries, network segmentation, firewall policies, secure remote access, administrative tiers, and controlled cross-entity connectivity
• Ensure data, devices, accounts, cloud resources, and third-party access remain within authorized entity, contractual, regulatory, and data-residency boundaries
• Partner with Security, Legal, Compliance, Privacy, and corporate IT teams to translate entity-specific obligations into practical controls, operating procedures, and evidence
• Document and periodically validate boundary controls, data flows, privileged access paths, exceptions, and intercompany dependencies; escalate gaps and drive remediation to closure
• Support local business continuity and operational autonomy while aligning with approved global architecture, security standards, and governance
• Establish, implement, and maintain secure configuration baselines for Windows, macOS, Linux, servers, network devices, cloud services, and endpoint-management platforms using recognized frameworks and vendor guidance
• Own patching and vulnerability-remediation workflows, including asset coverage, risk-based prioritization, remediation timelines, exception documentation, validation, and status reporting
• Administer and validate endpoint protections such as full-disk encryption, EDR/XDR, host firewall, secure boot, application controls, device compliance, removable-media controls, and least-privilege configurations
• Harden identity and administrative access through role-based access control, multifactor authentication, privileged-access separation, conditional access, service-account governance, and periodic access reviews
• Maintain logging, alerting, time synchronization, configuration monitoring, backup protection, and security telemetry needed for detection, investigation, and auditability
• Collect and maintain audit-ready evidence; support internal and external audits, control assessments, security reviews, customer requirements, and remediation plans
• Participate in incident response, containment, recovery, root-cause analysis, and corrective actions for infrastructure and endpoint security events
• Manage technical risks and policy exceptions transparently, including compensating controls, accountable owners, expiration dates, and closure plans
• Administer Active Directory and Entra ID or equivalent identity platforms, including user and group lifecycle, authentication, authorization, federation, and policy enforcement
• Manage Windows, macOS, and Linux endpoints through Intune, Jamf, or equivalent tooling, ensuring secure provisioning, configuration compliance, software deployment, inventory accuracy, and timely retirement
• Lead onboarding and offboarding activities, including device provisioning, access configuration, license assignment, asset recovery, and compliance validation
• Provide advanced troubleshooting and escalation support for employees, engineering systems, lab environments, collaboration services, and secure connectivity
• Own IT asset lifecycle, software licensing, vendor coordination, procurement support, warranty management, and secure equipment disposal
• Use scripting and automation to improve consistency, reduce manual effort, strengthen controls, and provide meaningful operational and compliance reporting
• Contribute reusable infrastructure patterns, standards, and documentation that can scale across comparable international entity environments