Top Systems Administrator Jobs

Maintain and administer the systems engineering requirements database (SEDB): metadata and schema management, user/security administration, queries/views, workflows, backups, installs/upgrades, license compliance, performance tuning, and automation. Support systems engineering documentation (CONOPS, requirements specs, RVTM, ICDs), provide SysML/UML modeling SME support, coordinate upgrades across IT groups, and assist system engineers with scripting, cloud instantiation, and integrations. Work may support DoD programs and require security clearance and US citizenship.

Lead design and implementation of security infrastructure and administer mission-critical engineering and DevOps applications. Manage Linux/RHEL systems, JFrog Artifactory, GitLab/GitHub, 3DX/Cameo/Jama/Teamcenter platforms, integrations, DISA STIG hardening, CI/CD integrations, and provide Tier 2/3 troubleshooting, compliance support, and ATO/RMF evidence for a classified defense program.

Lead design and implementation of secure database and enterprise storage architectures across relational, NoSQL, and cloud platforms. Manage performance, backup/recovery, HA, SAN/NAS, security hardening (DISA STIG/NIST), and ATO/RMF evidence. Serve as technical escalation, mentor junior staff, and support program architecture and acquisition decisions in a cleared defense environment.

Support and operate the company information security program: monitor and tune SIEM and security controls, investigate and remediate incidents, manage vulnerabilities, deploy and administer security applications, assist with compliance reviews and documentation, collaborate with IT teams, and perform onsite deployments and disaster recovery work.

Provide onsite technical support and system administration for Windows and Linux virtual and physical desktops. Perform patching, antivirus updates, asset/inventory management, user account administration, documentation, and user training. Collaborate with security engineers to deploy and validate IT/security solutions and support Agile teams while meeting SLAs.

Hands-on senior IT systems and security administrator responsible for on-site IT support, managing on-prem and government cloud (GCC High, Azure Government, AWS GovCloud) infrastructure, identity and access, endpoint and network security, incident response, vulnerability management, backups/disaster recovery, compliance (CMMC, NIST, FedRAMP, ITAR), and coordinating with vendors and global teams.

Manage and secure a hybrid Microsoft environment: administer on-prem AD and GPOs; operate Azure AD/Entra ID, Microsoft 365, Intune/Endpoint Manager; automate with PowerShell; implement identity controls (MFA, conditional access, PIM), DLP, and Defender/Sentinel monitoring; collaborate with networking/security teams and provide after-hours support as needed.

Lead design, deployment, and maintenance of enterprise IT systems and data center operations. Provide expert technical support, security incident response, patching, backup/recovery, inventory and access management, and documentation. Collaborate cross-functionally, mentor junior staff, and improve onboarding/offboarding and operational processes to ensure infrastructure reliability and security.

Operate and maintain enterprise Linux and Windows systems, manage virtualization and monitoring tools, automate tasks with scripts and system automation, enforce security best practices, and support mission-critical government IT infrastructure with an active TS/SCI+Poly clearance.

Lead enterprise systems and network administration for a DoD enterprise: oversee servers, virtualization, storage, networking, cloud, incident/outage response, RMF compliance, and geographically dispersed teams to ensure secure, resilient, highly available operations.

Provide on-site Linux and HPC systems administration for a classified program: install/patch/monitor systems, manage backups, user accounts, security auditing, coordinate with engineering and vendors, recommend improvements, and support hardware diagnostics and repairs. Requires working under minimal direction, occasional after-hours support, and lifting equipment.

Lead administration and lifecycle management of classified HPC Linux environments: monitor performance, optimize systems, integrate and support developers, ensure cybersecurity compliance (STIG/JSIG/RMF), manage backups/disaster recovery, and mentor teams while supporting classified program requirements and authorizations.

The role involves supporting enterprise IT systems, advanced troubleshooting in Windows environments, and managing identity lifecycle processes using MIM with a focus on national security.

Serve as Business Systems Analyst and JIRA Administrator to configure and manage JIRA, support Agile ceremonies, gather and trace system requirements, integrate JIRA with CI/CD and test tooling, report performance metrics and support JPMO planning and Integrated Master Schedule activities. Support transition from waterfall to Agile and provide technical guidance on system implications.

Own and govern ERP/MES manufacturing master data (materials, BOMs, inventory, vendor records), drive system improvements and UAT, develop functional requirements, ensure GMP compliance, and partner with IT, Procurement, Quality, and vendors to support manufacturing, supply chain, and commercial operations.

Install, configure, monitor, and maintain servers, networks, backups, and security. Troubleshoot hardware/software failures, manage user accounts, apply patches, perform daily system monitoring and backups, document procedures, and participate in on-call rotation while providing customer-facing support.

Lead Atlassian administration and integrations by designing, building, and maintaining REST/GraphQL/webhook integrations between SaaS, CRM/ERP, billing, and internal systems. Manage Jira/Confluence in clustered Linux, implement monitoring and security best practices, mentor teammates, troubleshoot stakeholder issues, and execute upgrades and data migrations to improve automation and reliability.

Serve as Atlassian SME and technical lead building and maintaining integrations (REST, GraphQL, webhooks) between SaaS, CRM/ERP/billing, and internal systems. Design secure, reliable APIs, implement monitoring, automate workflows, support and upgrade clustered Atlassian applications on Linux, create documentation, and collaborate with stakeholders while mentoring teammates.

Serve as an Atlassian SME and senior systems administrator to design, build, and support API/GraphQL/webhook integrations between SaaS and internal systems, automate processes, implement monitoring, manage clustered Linux Atlassian upgrades, resolve collaborative app issues, document solutions, and partner with stakeholders to improve operational efficiency.

Administer, secure, and troubleshoot Red Hat Linux servers; automate onboarding, patching, and deployments; support CI/CD and application lifecycles; ensure compliance with NIST/STIGs; participate in incident response and service improvements in a government/regulatory environment.

Serve as escalation point for advanced IT issues across endpoint, identity, cloud, OS, and network environments. Administer Intune and Jamf, manage Okta and Google Workspace, support AWS/GCP/Azure, troubleshoot Windows/macOS/Linux, and collaborate with cross-functional teams to maintain secure, reliable infrastructure. Document procedures, support projects and migrations, and participate in on-call rotation.

Administer and maintain a CUI enterprise network and systems under CMMC compliance. Configure and troubleshoot Cisco networking, Cisco ISE, Palo Alto firewalls, Microsoft 365 services, Active Directory, Windows and RHEL endpoints, VPNs, and monitoring tools. Respond to incidents, support patching and endpoint management, document change management, and prepare for audits while collaborating with engineers and operations teams.

Administer, configure, patch, and troubleshoot Red Hat Enterprise Linux systems in a large HPC environment. Automate tasks with Ansible and support Red Hat Satellite, performance tuning, security compliance, software installs, testing, and documentation while collaborating with technical teams to meet mission requirements.

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.

Owner and administrator of the Agiloft CLM platform: configure workflows, permissions, templates, and integrations. Partner with Legal Operations, IT, and business teams to optimize contract processes, support end users, build reports/dashboards, and maintain data integrity. Expand platform integrations and evolve legal technology capabilities.