Top Systems Administrator Jobs

Administer AWS-hosted thin-client infrastructure and 10ZiG Manager, including deployment, configuration, patching, security certificates, device enrollment, and operating system testing. Repurpose legacy hardware into secure thin-client endpoints and support VDI platforms including AVD, AWS WorkSpaces, and Horizon. Collaborate with engineering, ISSO, IO, and Operations teams, while documenting SOPs, technical designs, STIG compliance, and CTO/ATO packages.

Manage and support enterprise Windows and Linux server environments, Active Directory, virtualization (VMware), identity services (Azure AD), backup/recovery, endpoint management, and security. Troubleshoot escalations, automate tasks with scripting, support cloud/hybrid initiatives, and collaborate with IT teams for operational efficiency and compliance.

Administer and maintain enterprise Windows server environments and Microsoft services supporting secure Navy mission infrastructure. Responsibilities include system monitoring, troubleshooting, performance tuning, hardware upgrades, vulnerability remediation, SQL database administration, documentation, technology recommendations, and maintaining resilient high-availability environments. The role may also support other Navy commands through domestic and international travel.

Administer, configure, support, and optimize business-critical applications including accounting, payroll, purchasing, maintenance, and enterprise systems. Manage user accounts, permissions, workflows, integrations, updates, and system settings; troubleshoot issues; monitor performance; document procedures; and identify process improvements. The role partners with teams across the organization and coordinates implementations and upgrades.

Manage and monitor enterprise PKI systems, administer digital certificates (issuance, renewal, revocation), troubleshoot PKI issues, maintain CAs/RAs and HSMs, enforce PKI policies and best practices, conduct audits, document configurations and workflows, and automate tasks via scripting.

Manage, monitor, maintain, troubleshoot, and update Active Directory and hybrid authentication systems. Support identity, access, authentication, and centralized resource management platforms; resolve technical issues; and use automation and orchestration tools to streamline directory services maintenance and monitoring. Help evaluate and implement technologies that improve the directory services environment. The role is onsite in Washington, DC and requires an active Top Secret clearance, SCI eligibility, U.S. citizenship, and DoD 8140 IAT II compliance.

Lead Windows and VMware systems administration for classified government contracts: design, maintain, and secure Windows domain architectures, implement and manage VMware environments, ensure backups and recovery, enforce STIG/RMF compliance, audit security logging, troubleshoot cross-discipline issues, mentor junior staff, and coordinate vendor and system lifecycle activities in a Top Secret/SCI environment.

Administer, secure, and maintain Windows-based on-premises and Azure infrastructure, including servers, identity services, endpoints, databases, networking, storage, virtualization, backups, and disaster recovery. Build monitoring and alerting, support Microsoft 365 and Intune, automate tasks with PowerShell, maintain documentation, and assist with compliance, vulnerability management, incident response, and hybrid cloud operations.

Administer and sustain Windows, Linux, Active Directory, virtualization, network, and cybersecurity environments supporting secure DoD communications. Responsibilities include system installation, patching, monitoring, troubleshooting, access management, network administration, RMF and ATO compliance, incident response, backups, disaster recovery, documentation, technical support, modernization, and stakeholder coordination in classified and unclassified environments.

Administer, configure, and support Oracle OPERA PMS across managed and franchise hotels. Drive standardization, manage integrations (OHIP, OXI, IFC), coordinate vendors, support onboarding/migrations (including OPERA Cloud), develop SOPs and training, troubleshoot interfaces, and optimize system performance for multi-property operations.

Administer and sustain Windows and Linux environments across virtual server clusters, VDI, and enterprise infrastructure. Responsibilities include Active Directory, DNS, GPO, Exchange, SCCM, vulnerability remediation, IAVA management, security scanning, patching, monitoring, troubleshooting, documentation, outage communications, IT enhancements, and on-call support. The role also supports security compliance, system accreditation, network infrastructure, and project-related activities in a classified environment.

Leads enterprise systems administration for Department of Defense intelligence and mission infrastructure. Administers Windows and Linux environments, Active Directory, cloud and virtualization platforms, security controls, STIGs, patching, backups, monitoring, and incident response. Oversees infrastructure migrations and upgrades, automates administrative tasks, maintains compliance documentation, coordinates with cybersecurity teams, interfaces with government customers, and mentors junior administrators.

Installs, configures, maintains, monitors, and troubleshoots enterprise IT infrastructure, including servers, firewalls, switches, applications, and connectivity. Performs patching, testing, backups, disaster recovery, documentation, alert response, and hardware/software support. Collaborates with IT staff and vendors, recommends improvements, manages security tools, and supports systems across multiple sites, including after-hours work when needed.

Administers and secures network, web, communication, and server systems for up to 2,000 users. Manages accounts, access privileges, email, backups, patches, software upgrades, system performance, data integrity, documentation, and troubleshooting. Develops implementation plans, evaluates hardware and software, provides technical guidance, and ensures compliance with DoD, DHA, HIPAA, NIST, and industry standards. The role requires an active Public Trust clearance or eligibility to obtain one and U.S. citizenship.

Designs, implements, and supports server, storage, operating system, database, and computing-platform solutions. Maintains hardware and software release automation tools, manages accounts and access permissions, analyzes system and network performance, conducts hardware/software testing, researches technology standards, and performs programming, debugging, and documentation. Provides escalated technical support for complex infrastructure issues and mentors junior staff. May work across multiple sites and provide on-call support during outages, emergencies, and system conversions.

Provide senior-level Windows systems administration for classified networks: install/patch/monitor systems, enforce Group Policy and security controls, manage backups/recovery, support Active Directory and enterprise services, troubleshoot cross-platform issues, document procedures, use ticketing systems, and maintain compliance with classified environment standards (RMF/STIG/NISPOM). Must work on-site and support after-hours as needed.

Monitor, operate, and maintain C2BMC systems in a 24x7 environment. Provide first-level warfighter support, troubleshoot hardware, software, and network issues, document incidents, perform installations, manage user accounts, and coordinate with watch officers and system administrators to maintain secure, highly available mission systems.

Administer, maintain, secure, and troubleshoot Linux and Windows infrastructure in classified environments. Responsibilities include Linux server administration, core DNS/DHCP and identity services, virtualization and container support, networking and storage administration, system hardening, cybersecurity compliance, and infrastructure performance and availability. The role requires independent diagnosis of complex technical issues and sustained support for mission-critical systems.

Installs, configures, secures, and maintains enterprise Linux infrastructure, virtualization platforms, identity and directory services, and cloud operations tools. Resolves escalated Level II and III support issues, supports patching, backups, monitoring, automation, containerization, and application distribution. Leads or supports major IT projects, documents procedures, mentors team members, and participates in on-call and after-hours support.

Administers, configures, supports, and improves Salesforce and related technology systems. Partners with EdTech and business teams to gather requirements, deploy solutions, resolve issues, integrate third-party products, and develop applications and processes. Advises on CRM strategy, architecture, technology adoption, and best practices; leads prototypes and major system changes; identifies inefficiencies; supports sales enablement; and mentors engineering teams. The role also includes troubleshooting, stakeholder communication, training needs assessment, and occasional travel.

Administer and support multiple go-to-market and sales technology platforms. Manage user accounts, permissions, roles, access requests, reports, dashboards, workflows, and basic configurations. Provide Tier 1 troubleshooting and documentation, monitor platform health, support implementations and integrations, and identify process improvements. Partner with Sales, Marketing, Customer Success, Revenue Operations, and Enablement teams while exploring AI and automation opportunities.

Installs, configures, monitors, and maintains workstation and server operating systems and software. Manages UiPath Orchestrator environments, robot queues, jobs, triggers, assets, attended and unattended automations, production incidents, bot failures, deployments, testing, documentation, backups, audits, and compliance. Performs root cause analysis, scripting, change management, and vendor escalation while coordinating with development teams on patches and workflow enhancements.

Administer, secure, troubleshoot, and maintain Linux and Windows servers, virtual machines, databases, and SCADA/industrial-control platforms. Configure Ignition, Rockwell FactoryTalk, SEL, Nutanix, storage, networking, certificates, backups, and high-availability systems. Automate administration with Bash, PowerShell, Python, and SQL; apply and document DISA STIG compliance; test patches and recovery procedures; and coordinate with cybersecurity, engineering, application, and infrastructure teams supporting critical infrastructure and military operations.

Administer and maintain the Encompass mortgage loan-origination platform, including access controls, workflows, business rules, security profiles, configurations, custom forms, reports, integrations, data integrity, and system upgrades. Troubleshoot issues, test enhancements, support regulatory compliance, train users, manage support inquiries, and create documentation. Collaborate with IT, vendors, compliance, legal, and internal stakeholders to improve business processes and system functionality.

Supports IT systems and server operations, administering Microsoft Hyper-V, Microsoft 365, Azure, Active Directory, Dell servers, storage systems, endpoint tools, Zoom, and Proofpoint. Maintains system stability, performance, and availability; develops PowerShell automation; supports internal web tools; and serves as a Level 3 escalation point for advanced troubleshooting and root cause analysis.