IT Security Administrator Jobs in Reston, VA

Join a team that's transforming technology into opportunity by maintaining and operating complex IT systems. Provide critical support for UNIX/Windows servers, addressing technical challenges while en...

Engineer, implement, and maintain critical IT systems while providing support, troubleshooting, and managing day-to-day operations to optimize performance and reliability in a complex technical enviro...

Engage in the support, management, and optimization of IT systems, ensuring operational efficiency and problem resolution. Collaborate with teams to enhance system infrastructures and maintain seamles...

Take ownership of IT documentation and budgeting for 45-55 client accounts, providing strategic guidance and fostering strong relationships while proactively addressing their technology needs and enha...

Join our team to implement and manage enterprise network infrastructure, ensuring secure connectivity and optimal performance for a large-scale operation serving over 120,000 users across diverse loca...

Contribute to network performance by managing Cisco Meraki devices and Windows servers. Troubleshoot complex issues, ensure security compliance, and optimize infrastructure. Engage with IT staff to su...

Develop and implement security methodologies to ensure compliance with CMS requirements while addressing vulnerabilities and securing technical solutions through collaboration and incident response le...

Optimize the performance and security of multi-user computer systems while managing resources and user accounts to ensure efficient operations. Collaborate with teams to enhance system functionality a...

Solve complex infrastructure issues while managing user systems and security. Take ownership of system administration tasks, apply necessary updates, and support deployment of new projects to ensure e...

Champion vulnerability remediation and system hardening in a diverse enterprise environment. Collaborate with INFOSEC to ensure compliance, drive execution, and maintain security across Windows and Li...

Join a skilled infrastructure team as a Senior System Administrator, leveraging your Windows expertise to design, maintain, and optimize cutting-edge systems and networks in complex environments, whil...

Lead the charge in safeguarding sensitive data within a critical cybersecurity program. Collaborate with teams to implement robust data protection controls and monitor user activity, ensuring complian...

Accelerate your career by managing moderate complexity projects to enhance data security and clinical systems. Collaborate with cross-functional teams to support incident response and improve user exp...

Advance your career by driving Army IT approvals and governance, ensuring technology investments align with critical policies. Your expertise will enhance operational readiness and promote seamless mi...

Manage the IT Approval System to ensure Army technology aligns with governance. Your analytical skills will improve workflow efficiency, compliance, and decision-making speed, directly impacting the A...

Execute security measures by analyzing incidents, conducting audits, and managing vulnerabilities to protect networks and systems. Collaborate on improving security infrastructure and ensuring complia...

Empower the efficiency of IT systems through expert administration and support. This role focuses on troubleshooting, operations, and management of network devices, ensuring optimal performance and pr...

Elevate mission-critical infrastructure by managing secure systems and ensuring optimal performance for servers and networks while supporting classified IT operations...

Advance your career by leading security operations, managing a team of analysts, and enhancing the organization's security posture through effective incident response and monitoring strategies...

Empower the Mission LAN by managing systems administration, ensuring seamless operations, security compliance, and enhanced functionality. Drive innovation through technical expertise while collaborat...

Execute high-impact virtualization strategies by designing, implementing, and optimizing VMware solutions across a large enterprise, ensuring robust performance and security for mission-critical opera...

Optimize IT systems through effective implementation, troubleshooting, and maintenance. Deliver daily operational support for diverse infrastructures while ensuring system reliability and performance...

Join a dynamic team to enhance IT systems management, support troubleshooting, and ensure operational excellence across a secure environment, optimizing performance and user experience while engaging...

Join a dynamic team to enhance education and training applications through Life Cycle Sustainment activities, maintaining and optimizing hybrid Windows/Linux systems while embracing cloud technology a...

Elevate your career as a Windows Systems Administrator, managing and securing a dynamic Windows server and virtual infrastructure. Leverage your advanced skills in automation, PowerShell scripting, an...