Senior System Administrator

Description Department of War enterprise data and analytics program delivers mission‑critical capabilities that enable leaders across the Department to make faster, better‑informed decisions using trusted data at scale. Leidos Digital Modernization sector is seeking an experienced Senior System Administrator to support the delivery, enhancement, and adoption of enterprise data and analytics products used across multiple DoD organizations. In this role, you will work alongside government partners, engineers, and other industry teammates to translate operational and strategic requirements into scalable, production‑ready solutions. You will contribute directly to product planning, execution, and continuous improvement—helping ensure capabilities are delivered efficiently, aligned to mission priorities, and positioned for sustained success. This position offers the opportunity to work on a high‑visibility, enterprise program at the intersection of data, analytics, and emerging AI technologies. Ideal candidates are motivated by mission impact, comfortable operating in complex stakeholder environments, and interested in building deep domain expertise while delivering capabilities with real‑world national security outcomes. Primary Responsibilities Resolve access issues related to system configurations and platform‑specific permissions. Support ServiceNow and Jira access provisioning and troubleshooting. Serve as an escalation point for technical issues beyond standard IAM workflows. Ensure system availability and correct configuration across supported platforms. Operate and improve User Support Systems and Services for all System users. Fulfill account requests, onboarding, offboarding, and access requirements. Allocate resources and provide common support services. Troubleshoot and mitigate operational or technical issues users may encounter. Prepare, improve, maintain, and execute a User Support Operations Plan (USOP). Design, operate, and maintain an User Support Desk. Provide user support services via multiple channels including email, chat, and ticketing systems. Operate the User Support Desk across various security enclaves (IL2/IL5, IL6, JWICS). Manage service ticket processes, including categorization, routing, and resolution. Implement and operate access management mechanisms for data, tools, and services. Monitor, track, and report SLA performance measures and Key Performance Parameters (KPPs). Basic Qualifications Associate degree or higher from an accredited college or university or offerings listed in DoD 8140 Training Repository or Cloud+, GICSP, GSEC, or SSCP. Minimum of 5 years of experience in system administration or related field. Experience with ServiceNow and Jira. Strong understanding of IAM workflows and system configurations. Experience in user support operations and automation. Ability to operate across multiple security enclaves (IL2/IL5, IL6, JWICS). Experience in service ticket management and resolution. Top Secret clearance required. Preferred Qualifications Bachelor's degree in Computer Science, Information Technology, or related field. TS/SCI clearance. Experience with cloud environments such as AWS GovCloud, SC2S AWS Secret Region Cloud, and C2S AWS Cloud. Familiarity with DoD systems and environments. Experience with AI/ML tools and services. Strong problem-solving and troubleshooting skills. Excellent communication and customer service skills. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws. #J-18808-Ljbffr Fairygodboss