Top Systems Administrator Jobs

Administer, install, configure, and maintain enterprise VMware vSAN/vSphere environments. Monitor performance, security, patches, capacity, and datastores. Provide Tier 2/3 troubleshooting, manage storage networking (SAN/NAS), support VM deployments, and automate tasks with PowerShell/PowerCLI in multi-site data center environments.

Administer and maintain CGI Momentum Financials across development, test, and production environments. Implement and support a migration to RHEL/OpenShift, maintain Kubernetes clusters, apply information assurance controls, automate administrative tasks, and provide technical support for development and deployment activities while collaborating with cross-functional teams to ensure successful project execution.

The Systems Administrator manages IT systems, providing support for implementation, troubleshooting, and maintenance of IT infrastructure, including UNIX and Windows systems, while ensuring compliance with security standards.

The Systems Administrator for Operational Technology oversees and improves OT systems, ensures application availability, troubleshoots issues, supports critical operational systems, and leads software upgrades while collaborating with various stakeholders.

Design, implement, and maintain server, network, and storage infrastructure. Troubleshoot and resolve complex infrastructure issues, perform preventive maintenance and backups, deploy/configure servers, storage, and network equipment, manage vulnerabilities, and support IT team to meet SLAs.

Provide Tier 2 systems administration and help-desk support for messaging and communication applications in a 24/7 environment. Administer message storage/retrieval, implement RBAC and security controls, manage sensitive access bins, respond to incidents, maintain SOPs and operational records, perform diagnostics, hardware repairs, and support deployment and user troubleshooting.

Provide day-to-day administration and support of corporate servers, virtualization, storage, networking, and VoIP. Lead infrastructure upgrades, monitor performance and security, manage backups/disaster recovery, oversee MS SQL Server, and serve as escalation for Tier 2/3 issues while working with vendors and documenting systems.

Consult with clients to assess IT needs, design and maintain technology solutions, manage relationships, and resolve technical issues while building expertise through training.

Maintain and secure on-prem VMware and growing AWS infrastructure. Administer Windows and Linux servers, Active Directory, networking, backups, monitoring (Nagios/Splunk), firewall/switch changes, endpoint security, incident response, and support PCI DSS/SOC 2 compliance while aiding cloud migrations and keeping documentation current.

Lead administration, optimization, maintenance, and recovery of on-premises and cloud enterprise systems. Support Azure, Microsoft 365, Windows and Linux servers, SAN/NAS storage, virtualization, backup/recovery, PKI, and ERP/integration platforms. Drive troubleshooting, automation (IaC), capacity planning, security/governance, documentation, vendor coordination, and on-call rotation.

Provide Tier I/II systems administration and help-desk support for government databases, software, and systems. Troubleshoot software issues, perform first-contact resolution for tickets, manage web servers (Tomcat, IIS) and Oracle/database tasks, and support users onsite at Fort Meade during core hours.

Administer and maintain enterprise user profile management systems across physical, VDI, and cloud endpoints. Monitor performance, troubleshoot profile corruption/sync/authentication issues, perform migrations, apply patches and hardening, collaborate with endpoint, storage, and cybersecurity teams, and maintain documentation and SOPs to ensure secure, compliant, and reliable user profile delivery.

Provide enterprise endpoint provisioning, deployment, patching, compliance, and sustainment support. Administer endpoint management platforms (MECM/Intune), perform OS imaging and application packaging, enforce secure configurations and encryption, manage patch and vulnerability remediation, monitor endpoint health, and provide Tier 2/3 troubleshooting and documentation while collaborating with engineering and cybersecurity teams.

Administer and maintain a large-scale NGDE thin client and virtual desktop environment, ensuring availability, performance, and security. Monitor infrastructure health, manage consoles/licensing/routing, support backend components, apply patches and firmware, troubleshoot complex authentication and routing issues, and maintain SOPs and documentation while collaborating with network, cybersecurity, and virtualization teams.

Senior systems administrator supporting US Army INSCOM. Installs, configures, and maintains UNIX and Windows systems; manages client/server/storage/network devices; provides Tier 1/2 troubleshooting and escalation; implements OS enhancements; integrates new technologies; supervises personnel assignments; performs on-site daily support and occasional travel.

Administer, secure, and sustain enterprise Exchange and M365 messaging across multi-network environments. Ensure high availability, mail flow, authentication/PKI, backup/recovery, patching, compliance, and migration/upgrade support. Troubleshoot complex routing, DNS, mobile access, and hybrid integration issues while maintaining documentation, SOPs, and remediation of vulnerabilities to support mission-critical communications.

Manage and maintain Windows and Linux servers in Azure Government; perform configuration, patching, monitoring, and troubleshooting; administer accounts and least-privilege access; integrate with Azure AD/on-prem AD and MFA; automate tasks with Ansible/PowerShell; apply DISA STIGs and compliance controls; maintain backups and DR/COOP testing; evaluate and migrate databases, address vulnerabilities, and support cleared personnel.

Provide Tier I/II support for hardware, software, and applications across on-prem and cloud-integrated networks; manage AD and Azure AD/Entra ID accounts, Intune enrollment and compliance, Microsoft 365 tools, apply security patches/STIGs/IAVAs, perform basic network troubleshooting, assist with JWICS VTC scheduling, document configurations, support accreditation and helpdesk duties, and participate in projects as assigned.

The Senior Systems Engineer will design and develop data applications, lead software development teams, oversee data integration projects, manage BI systems, and ensure optimized performance while collaborating across teams.

Provide advanced systems administration and network/infrastructure support in a DoD/IC environment, ensuring high availability, security, STIG/IAVA compliance, virtualization management, automation with Python/Ansible, firewall and VPN administration, vulnerability scanning/remediation, and operational readiness for classified enterprise systems.

Manage and maintain the firm's ServiceNow platform and core ITSM modules (Incident, Problem, Change, Request, Knowledge). Configure forms, UI policies, business rules, notifications, and Flow Designer workflows. Troubleshoot platform issues, support data imports/exports and basic integrations, implement minor enhancements and low-code solutions, maintain documentation, and support related tools (Secret Server, BeyondTrust).

The Network Systems Admin will support application teams with infrastructure tasks, including change deployments, incident resolution, and event monitoring.

The Network Systems Admin will support app teams in change and code deployments, incident resolution, and event monitoring requiring communication skills and system administration expertise.

Responsible for provisioning, installation, configuration, operation, and maintenance of systems hardware and software and related infrastructure. Participates in technical research and development, assists project teams, and performs daily system monitoring and troubleshooting.

Provide installation, configuration, and support of software and tools, maintain networks, diagnose issues, and work with vendors on software integration.