Leidos has a new and exciting opportunity for a System Administrator - Windows in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA) . Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos , we offer competitive benefits , including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security! Primary Responsibilities The selected individual will be responsible for monitoring infrastructure systems, applications, and processes, and for ensuring that all issues are identified, tracked, and resolved in a timely manner. She/he will provide support for all infrastructure systems and will respond to hardware and software incidents and work with senior system administrators, at times remotely from other locations . Other responsibilities include: Quickly responding to IT Help Desk calls and emails in a professional manner; ensuring issues are resolved and/or escalated to the appropriate teams; and following up with teams and users to ensure issues are satisfactorily remediated. Identifying, troubleshooting, and correcting hardware and software issues including network connectivity. Utilizing enterprise monitoring solutions to identify alarms that have been triggered against the various environments. Proactively contacting customers when infrastructure processes are significantly delayed or may impact their ability to complete a business function on time. Executing the process for managing information assurance vulnerability alerts (IAVAs) and system security scanning for equipment suites in accordance with the System Security Plans for these systems to rapidly and accurately identify and remediate IAVAs. Initiating IAVA responses and system security scans, completing remediation, and extending IAVA patches and security updates on various IT and network systems. Providing technical assistance to companion work groups in support of overlapping projects such as implementing IT enhancements and optimizing systems. Maintaining good inter-departmental relations, communicating with users, and publishing status of system outages. Participating in the creation and ongoing maintenance of documentation to ensure clear, concise and accurate information is readily available to assist with incident resolution.