Lead Systems Administrator (Windows) (Government) with Security Clearance

Job Description: This position requires office presence of a minimum of 5 days per week and is only located at customer's site. Work to be performed in Dahlgren, VA. AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to our customers' mission. The AT&T will provide comprehensive Information Technology Infrastructure Support Services to the US Navy, delivering asset management, network operations, system design and configuration, and facility support to ensure effective day-to-day operations at several Naval Bases. AT&T has an opening for a Lead Systems Administrator (Windows) to provide enterprise-level support for the US Navy. The position will lead efforts in system performance monitoring, backup and recovery process, and cross-functional collaboration with engineers and cybersecurity teams to maintain compliance and mission readiness. Job Duties/Responsibilities: * Oversee the design, implementation, and maintenance of Windows-based server and desktop environments across an organization. * Manage Active Directory, Group Policy, DNS, DHCP, and other core Windows services to ensure secure and efficient operations. * Leads efforts to deploy and configure servers, monitor system performance, and apply patches and updates to maintain system integrity and compliance. * Develop and maintain automation scripts for routine tasks, manage backup and recovery processes, and ensure high availability of critical systems. * Collaborate with network engineers, cybersecurity teams, and application support staff to ensure seamless integration and secure operations across the IT infrastructure. * Planning and execute system upgrades, migrations, and new deployments, often leading cross-functional teams through these initiatives. * Document system configurations, procedures, and incident resolutions, as well as mentoring junior administrators and providing guidance on best practices. * Maintain a stable, secure, and scalable IT infrastructure. Required Clearance: TS/SCI (tssci) Required Qualifications: * 6 years of professional work and leadership experience in relation to Windows system administration of networks and software systems. * Experience in system backup/recovery, basic software management, security and library management, installation and configuration of hardware, operating systems and COTS software, operating computer systems in different operating environments, sizing, performance, tuning, hardware/software /network trouble shooting and resource allocation. * Experience in maintaining proficiency on major network security tools such as, firewalls. * Experience developing system specifications and performing market research procurement tasks. * Experience with different network protocols including TCP/IP. * Experience of computing and networking vulnerabilities, and attach and latest detect methods. * Required Certification: IAT Level II Our Lead Systems Administrator (Windows) earn between $100,000 - $170,000 . Not to mention all the other amazing rewards that working at AT&T offers. Individual starting salary within this range may depend on geography, experience, expertise, and education/training. Joining our team comes with amazing perks and benefits: * Medical/Dental/Vision coverage * 401(k) plan * Tuition reimbursement program * Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays) * Paid Parental Leave * Paid Caregiver Leave * Additional sick leave beyond what state and local law require may be available but is unprotected * Adoption Reimbursement * Disability Benefits (short term and long term) * Life and Accidental Death Insurance * Supplemental benefit programs: critical illness/accident hospital indemnity/group legal * Employee Assistance Programs (EAP) * Extensive employee wellness programs * Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T phone Weekly Hours: 40 Time Type: Regular Location: Newburg, Maryland It is the policy of AT&T to provide equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, AT&T will provide reasonable accommodations for qualified individuals with disabilities. AT&T is a fair chance employer and does not initiate a background check until an offer is made.

Location: Newburg, Maryland, US

Posted Date: 11/12/2025