Top IT Systems Administrator Jobs

Administer employee technology across Mac and Windows devices, enterprise SaaS applications, MDM platforms, and IT service queues. Resolve incidents and requests within SLA, manage user access and device lifecycles, support endpoint-adjacent services, and create documentation, runbooks, and self-service resources. Partner with IT Engineering and Desktop Support to automate repetitive work and improve employee technology operations.

Manage classified, air-gapped IT systems and lab environments in a 100% onsite closed area. Configure Active Directory, GPOs, VMware, Veeam, Trellix ePO, Nessus, Splunk, and Lab-in-a-Box environments. Lead data spill response, secure wipes, vulnerability remediation, system monitoring, backup recovery, STIG/RMF compliance, documentation, and audit readiness while coordinating with security stakeholders.

Own the company’s identity, endpoint, and IT service management strategy. Administer Jira and Jira Service Management, Microsoft Entra, Jamf-managed macOS devices, Microsoft 365, Slack, and Confluence. Build access, device trust, onboarding, offboarding, automation, and email security workflows. Lead SaaS governance, endpoint security, troubleshooting, and internal tooling improvements while partnering cross-functionally in a hybrid Boston office environment.

Administer secure and air-gapped enterprise systems, including installation, configuration, upgrades, patching, virtualization, Windows and Linux environments, monitoring, troubleshooting, documentation, and Tier II support. The role maintains compliance and security standards, supports users, resolves infrastructure issues, and escalates problems as needed. It is onsite in El Segundo, California, requires U.S. citizenship and the ability to obtain a Secret clearance, and may involve occasional travel.

Senior systems administrator responsible for secure, classified IT environments: configure and maintain Lab-in-a-Box, VMware, backups, endpoint protection, vulnerability scanning, Active Directory/GPOs, Splunk logging, and ensure STIG/RMF/NISPOM compliance. Lead data spill response, system sanitization, documentation, and audit readiness while collaborating with security stakeholders in a 100% onsite classified area.

Administer classified, air-gapped IT systems and lab environments in a 100% onsite closed area. Responsibilities include Active Directory, VMware, Veeam, Trellix ePO, Splunk, Nessus, Lab-in-a-Box environments, vulnerability remediation, data spill response, secure wiping, domain controller maintenance, STIG/RMF compliance, documentation, and audit readiness.

Administers and monitors managed services infrastructure, including Windows servers, Microsoft 365, networks, security systems, virtualization, storage, backups, and MSP platforms. Troubleshoots escalated issues, performs root cause analysis, supports technical teams, improves alerting and automation, documents resolutions, analyzes network health, and participates in emergency on-call rotations.

Administer and improve enterprise infrastructure across Linux, Windows, macOS, cloud, virtualization, networking, storage, backup, identity, and endpoints. Develop automation, maintain secure configurations, monitor systems, remediate vulnerabilities, investigate incidents, and support compliance initiatives. Provide Tier 2/3 desktop engineering, device provisioning, onboarding and offboarding, endpoint management, troubleshooting, and documentation. Collaborate with engineering, security, and operations teams to deliver reliable, scalable, and secure infrastructure.

Maintain and expand IT infrastructure, networked devices, cloud-connected systems, and 24/7 IT support for products and employees. Implement efficiency-focused technology projects, troubleshoot systems, manage vendors, document processes, administer enterprise platforms, and guide users. Partner with robotics engineers and contractors to build scalable, reliable, cost-effective infrastructure while managing competing priorities and maintaining operational excellence.

Leads enterprise IT infrastructure administration across identity, Windows and file servers, Microsoft 365, virtualization, networking, security, telephony, facilities systems, and automation. Oversees access governance, controls, audits, licensing, vendors, projects, eDiscovery, backup and disaster recovery, and change management. Serves as technical escalation point, mentors junior staff, coordinates infrastructure and security initiatives, and supports onsite server rooms and critical environments.

Supports approximately 125 users across multiple fire district facilities. Responsibilities include troubleshooting Windows devices, hardware, mobile devices, printers, phones, and AV; administering Microsoft 365, Entra ID, Intune, Azure, and Meraki systems; monitoring backups; supporting security hygiene, access control, onboarding, and automation; documenting resolutions; and coordinating with vendors and partner agencies. The role requires regular interfacility travel, occasional after-hours support, and the ability to grow into a senior systems administration position.

Provide remote and on-site IT support for clients, monitor and maintain systems, troubleshoot Windows Server and workstation environments, administer Office 365, support TCP/IP networking, manage RMM tools, and assist with Azure and AWS infrastructure. The role also requires documenting technical work, collaborating with clients, mentoring junior staff, and delegating tasks.

Support and maintain IT infrastructure, endpoints, operating systems, user accounts, virtual machines, and security tools. Responsibilities include onboarding and offboarding, patch management, vulnerability scanning and remediation, compliance tracking, scripting automation, server installation and decommissioning, rack organization, and cable management. The role requires Linux administration, Windows and Microsoft 365 management, virtualization, cloud familiarity, firewall knowledge, and hands-on data center experience.

Administer LangChain’s SaaS, identity, access, MDM, and endpoint environments. Manage Okta, RBAC, provisioning, hardware lifecycle, licenses, configurations, and employee support across hardware, software, networking, and SaaS tools. Develop API integrations, scripts, workflows, and automation to reduce manual work. Build tooling, playbooks, documentation, and knowledge for an AI ITSM agent. Support a growing startup environment with hands-on troubleshooting and scalable IT operations.

Owns the end-to-end migration from Microsoft 365 to Google Workspace, including tenant architecture, user and data mapping, migration pipelines, DNS and mail routing, identity management, security, testing, cutover, and post-migration support. The role also handles automation, documentation, user training, troubleshooting, legacy decommissioning, and compliance archiving.

Own and maintain a 10-bay QNAP NAS and Dropbox Business integration for secure footage storage and collaboration. Responsibilities include configuring storage, managing remote access and permissions, establishing file workflows, creating and testing independent backups, troubleshooting systems, and documenting setup and recovery procedures. The role begins with a systems review and approved remediation, followed by ongoing maintenance and support.

Leads systems and network administration across pediatric clinic locations. Responsibilities include infrastructure and phone system projects, hardware deployment, troubleshooting, employee onboarding and offboarding, vendor coordination, access and security management, documentation, automation, and process improvement. The role is primarily remote with regular onsite support, on-call responsibilities, and travel between clinics and partner locations.

Manage and secure hybrid on‑prem and cloud infrastructure (Azure and AWS). Administer identity, compute, storage, virtualization, monitoring, backups/DR, and security. Support cloud migrations, AI/ML infrastructure, Tier 2/3 troubleshooting, Microsoft 365, documentation, and process improvement.

Provide IT systems support and resolve tickets while completing project tasks. Maintain and configure Azure services, Office 365, Active Directory, virtualization platforms, networking equipment, storage, backups, and ERP-related systems in a production environment. This onsite role requires independent problem-solving, effective task and project management, and familiarity with IT best practices and security principles.

Provides advanced IT support and systems administration for hardware, software, operating systems, applications, servers, and connectivity. Maintains reliable computer systems, performs upgrades, resolves technical issues, supports desktops and helpdesk operations, and implements data protection, backup, disaster recovery, and failover procedures. Coordinates with distributed IT teams and service providers while documenting solutions, training users, and providing occasional evening, weekend, and travel support.

Provides advanced onsite IT support across multiple manufacturing locations. Maintains and configures computer systems, servers, operating systems, applications, networks, backups, disaster recovery, and failover procedures. Diagnoses hardware and software issues, leads desktop and helpdesk support, deploys technical solutions, documents processes, and coordinates with other IT teams and service providers. Supports Microsoft technologies, CAD and engineering applications, virtualization, cloud platforms, and enterprise manufacturing software.

Leads day-to-day IT systems administration, infrastructure management, user support, vendor coordination, and technology improvements. Administers Microsoft environments, networks, endpoints, servers, backups, business applications, and access controls. Supports cybersecurity, CMMC Level 2, NIST SP 800-171 compliance, vulnerability response, audits, and protection of sensitive information. Provides functional IT leadership, manages priorities and vendors, supports projects and budgets, and develops procedures, documentation, and continuity practices.

Provide onsite and remote IT support across multiple locations, administering endpoints, identity systems, Linux environments, office infrastructure, networks, and security controls. Manage device lifecycles, user access, incidents, documentation, compliance, and automation while supporting specialized engineering environments and an on-call rotation.

Provides primary IT support for internal users across a national organization. Manages laptops, mobile devices, networks, servers, Azure, Active Directory, Microsoft 365 applications, backups, monitoring, security, and vendor relationships. Resolves technical issues, administers accounts and permissions, maintains systems, and supports mergers and acquisitions by integrating newly acquired companies’ IT environments. Requires after-hours support and willingness to travel up to 50% within the United States.

Administer and optimize the TeamDynamix platform supporting IT service management, project portfolio management, ticketing, workflows, service catalogs, dashboards, integrations, and automation. Manage permissions, reports, system performance, vendor relationships, upgrades, data integrity, security, and compliance. Collaborate with stakeholders to implement modules and enhancements, troubleshoot issues, and create training documentation for users and technicians.