Sr. System Administrator TS/SCI Polygraph

Leidos•Annapolis Junction, MD

4d•$116,350 - $210,325

About The Position

Sr. System Administrator Leidos has a new and exciting opportunity for a Sr. System Administrator 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! Job Summary: You will be responsible for system administration support activities for a large, complex network environment with geographically distributed systems. The position entails supporting solutions for system engineering requests that meet operational needs, as well as upgrading and maintaining capabilities. You must be comfortable working in a fast-paced environment with multiple air-gapped systems which have individual domains and supporting infrastructure, and with maintaining a complex IT environment with multiple logins and associated supporting storage and network infrastructure. The role requires an energetic, focused, and driven individual who can adapt well to a changing environment. You will possess strong system administration and troubleshooting skills and must be able to adapt quickly with the team to undertake various system administration network-centric tasking.

Requirements

BS degree and 12 – 15 years of prior relevant experience or Masters with 10 – 13 years of prior relevant experience. Additional experience may be substituted for a degree.
Must have experience as a systems administrator providing direct support to end users and technical staff (developers, testers, engineers, etc.).
Must be proficient with Windows Server, 2016, 2019, and Active Directory.
Must have experience with Linux and Microsoft-based servers and workstations.
Must have experience with OS and Application Hardening to include DISA, Best Practices, and High Assurance environments.
Must have experience with software/hardware deployment, patches, and operating systems, and basic system backup and restore functions.
Must have experience with and/or have knowledge of Red Hat 7 and 8, and VMWare.
Must have experience with Apache Tomcat, IIS, and/or SQL server database.
Must have experience documenting and providing information for security accreditation and certification.
Must have a solid understanding of advanced security protocols and standards.
Must have experience with Network Security Technologies (e.g. Multiple Domain, PKI, SSP, and Vulnerability Assessment).
Must have experience with both Client and Server virtualization environments.
Must have experience with installation, configuration, troubleshooting, and reimaging hardware.
Must have experience with disk arrays, PowerShell and PowerCLI, KVMs.
Must have knowledge of PKI systems which use HSMs.
Knowledge of NTP servers for time synchronization.
Must have experience optimizing system operations.
Must have a solid understanding of information security principles and practices.
Must have experience with or familiarity with software and security architectures.
Must be able to support occasional day or short duration travel, if needed.
Must have TS/SCI with Polygraph.

Nice To Haves

Knowledge building from zero, configuring and maintaining large, distributed Trellix ePO environments
SALT and Python scripting experience.

Responsibilities

Responsible for installing and administrating systems, applications, and processes, and for ensuring that all issues are identified and resolved in a timely manner.
Responsible for ensuring server and desktop configurations are optimized and running continuously and efficiently.
Perform security management and application performance optimization functions.
Administration/sustainment of a system that provides a web-based application for storing, sharing, and distributing information.
Creating and maintaining complex server enclaves, including analyzing system scanning reports, patching, cert renewals, vulnerability management assessments, and active directory configurations.
Identifying and correcting hardware and software issues.
Responding to system administration, operations, and maintenance problems, and developing re-work solutions.
Creating and maintaining documentation of complex server/network environments to ensure that clear, concise and accurate information is readily available for incident resolution.
Communicating with users and external support personnel regarding system outages and upgrades, and conferring with upper management regarding recommended resolution options.