IT Security Administrator Jobs in Washington, DC

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...

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...

Take ownership of supporting and optimizing server and virtual infrastructures. Oversee daily operations, manage VMs, ensure security compliance, and enhance system and network performance through bes...

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...

Join a team that's driving innovation in systems administration, supporting diverse technologies including systems, networks, hardware, VMs, and GPUs, while ensuring operational excellence and securit...

Conduct comprehensive IT security audits, ensuring infrastructures are secure, efficient, and compliant. Collaborate with teams worldwide, preparing detailed reports on vulnerabilities and recommendin...

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...

Manage, optimize, and secure mission-critical applications in classified environments, ensuring operational reliability and compliance while utilizing cloud-native technologies and container orchestra...

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...

Join a mission-driven team to ensure cybersecurity compliance and manage ATO processes. Lead security operations and incident management to maintain continuous readiness across critical defense system...

Grow your career with us! As an IT Systems Administrator, you'll manage end-user technology, SaaS platforms, and core IT systems to ensure security and efficiency. Collaborate with teams to enhance pr...

Drive Adelphi's security program, ensuring compliance and collaboration in a fast-paced environment. Lead efforts for timely DoD authorization, integrating security architecture with operations while...

Join our team to engineer and support innovative solutions in a Windows environment, enhance system deployment, and improve network operations while collaborating with various teams to ensure seamless...

Transform operational capabilities by ensuring secure, reliable SAP network systems. Collaborate with stakeholders to manage configurations, monitor systems, and implement security controls for missio...

Engage with enterprise teams to support and enhance cloud infrastructure, ensuring optimal performance of hardware and software systems while delivering exceptional user support and maintaining securi...