Senior Windows Administrator Jobs in Reston, VA

Engage with teams to consolidate systems into a cohesive solution that enhances manageability and security. Contribute to a high-visibility project focused on user experience while building strong rel...

Partner with us to consolidate a diverse set of systems into a cohesive solution that enhances manageability, security, and user experience, while contributing to a high-visibility and long-term archi...

Join a team that ensures secure, compliant IT operations for mission-critical services. As a System Administrator, you'll manage server environments, support cybersecurity protocols, and collaborate w...

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...

Develop and optimize Azure cloud infrastructure solutions that enhance operational efficiency, ensure compliance, and support scalable enterprise growth. Collaborate cross-functionally while implement...

Drive operations excellence by managing IT systems, providing Tier 1 and 2 support, and troubleshooting various technologies. Contribute to optimization of system performance and enhance user experien...

Transform user experiences by managing complex IT systems and help desk inquiries. Oversee UNIX and Windows environments while enhancing operational efficiency based on user needs and system performan...

Execute senior-level NOC and systems admin operations, ensuring robust network infrastructure, security compliance, and 24/7 monitoring to support a mission-critical DoD environment with global impact...

Oversee IT support and administration for Windows/Linux environments in an air-gapped setting, ensuring reliable systems and efficient ServiceNow integration, while collaborating with a team to meet c...

Innovate solutions in Microsoft Azure by designing, deploying, and supporting cloud environments. Collaborate with clients to integrate Azure with existing infrastructures while maintaining documentat...

Grow your career with a dynamic team in this critical role, enhancing and securing enterprise Linux systems while leveraging automation and cloud technologies to improve operations and support nationa...

Lead the charge in providing high-level technical support and coordination for executives, ensuring optimal performance of business-critical applications while overseeing cybersecurity and technology...

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...

Optimize and develop an internal AI Enablement Platform; lead projects, integrate Microsoft identity systems, and enhance productivity through cutting-edge software tools while collaborating across te...

Support missile defense architecture evaluations, collaborating with MDA and agencies to analyze data, develop concepts, and assess capabilities for homeland and regional protection against diverse mi...

Drive stakeholder engagement and requirements analysis to enhance Agile workflow management and support mission-critical projects in a dynamic software development environment...

Empower system performance by providing crucial administration support for large-scale Linux infrastructure, ensuring operational excellence through monitoring, problem resolution, and security adhere...

Optimize system performance as a Red Hat Linux System Administrator in an AWS environment. Monitor, maintain server health, mentor junior staff, and support engineering efforts while ensuring the inte...

Shape the future of enterprise network operations, security, and infrastructure while managing and sustaining an integrated IT environment with a focus on routing, switching, and network security tech...

Drive enterprise IT systems engineering to support a fast-growing global company. Collaborate with cross-functional teams to deliver technology solutions and ensure security compliance while maintaini...

Deliver comprehensive Linux system administration support, ensuring the stability and performance of critical infrastructure through effective management of CentOS, Rocky, and RHEL environments while...

Play a key role in managing and maintaining Linux systems, collaborating with teams to ensure optimal server performance while adhering to security protocols and guidelines. Leverage extensive experie...

Advance IT security and efficiency by designing and managing a robust VMware infrastructure. Collaborate with teams to enhance system performance and mentor junior staff, supporting critical initiativ...

Join our Agile team to drive development of scalable software solutions, lead technical design, and influence strategic direction. Collaborate closely with product owners and stakeholders to meet cust...

Lead the charge in enhancing cloud infrastructure through automated solutions, technical mentorship, and operational excellence. Collaborate globally to implement effective strategies, drive innovatio...