Type of Requisition:RegularClearance Level Must Currently Possess:Top Secret SCI + PolygraphClearance Level Must Be Able to Obtain:Top Secret SCI + PolygraphPublic Trust/Other Required:NoneJob Family:IT Infrastructure and OperationsJob Qualifications:Skills:Linux, System Improvements, System Performance, Virtual Machines (VM)Certifications:NoneExperience:10 + years of related experienceUS Citizenship Required:YesJob Description:SYSTEMS ADMINISTRATOR SME – LINUXGrow your impact. Grow your career.At GDIT, you’re not just maintaining systems — you’re supporting a mission that depends on rock‑solid Linux expertise. Join us as a Systems Administrator Linux SME on a long-standing Prime contract supporting a high‑visibility, mission-critical environment. You’ll work in a fast-paced setting where your decisions matter and your technical leadership is valued.This is the place where Linux professionals build stability, expand their skills, and chart a long-term career path.KEY RESPONSIBILITIESSystem AdministrationInstall, configure, manage, and maintain Linux systems, including virtualization platforms and cloud computing environments.NetworkingDetermine network specifications, input/output processes, and working parameters for hardware/software compatibility. Identify, analyze, and resolve network issues.System SecurityIn coordination with the ISSO, implement security measures, conduct audits, and ensure compliance with customer security policies.CollaborationPartner with software developers and IT stakeholders to support system integration, patch workflows, and maintenance activities.AutomationDevelop and maintain scripts and automation tools that reduce manual effort and increase operational efficiency.Patch ManagementMaintain systems with software updates, patches, and upgrades while validating functionality and compatibility.DocumentationCreate and update system documentation including configurations, processes, and procedures.WHAT YOU’LL NEED TO SUCCEEDBring your Linux expertise and passion for innovation to an environment where your skills are both trusted and expanded.• Bachelor’s degree in a technical field• 10+ years of related experience• SME-level proficiency with Linux operating systems• Active TS/SCI with polygraph• US citizenship• Demonstrated experience with virtual machines, Thin Clients, switches, and networking responsibilitiesDESIRED SKILLS• Strong hands-on experience with AWSWHY LINUX SMEs CHOOSE GDIT• Career Stability: Support a long-term Prime contract with continued mission funding and organizational investment.• Growth Opportunities: Work alongside top engineers, gain exposure to cloud environments, automation, new toolsets, and mission technologies.• Impactful Work: Your Linux expertise directly enables critical national‑level operations.• Technical Leadership: As an SME, your insights shape system architecture, integration, and modernization.• A Culture of Support: GDIT invests in training, certifications, and professional development to help you build your next career milestone.GDIT IS YOUR PLACEAt GDIT, the mission is our purpose, and our people are at the center of everything we do.● Growth: AI-powered career tool that identifies career steps and learning opportunities● Support: An internal mobility team focused on helping you achieve your career goals● Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off● Flexibility: Full-flex work week to own your priorities at work and at home● Community: Award-winning culture of innovation and a military-friendly workplaceOWN YOUR OPPORTUNITYExplore an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.The likely salary range for this position is $170,000 - $230,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.Scheduled Weekly Hours:40Travel Required:NoneTelecommuting Options:OnsiteWork Location:USA MD Annapolis JunctionAdditional Work Locations:Total Rewards at GDIT:Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most. Our Identity Verification Process:As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes. About Our Work:We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.Join our Talent Community to stay up to date on our career opportunities and events atgdit.com/tc.Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans