**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 Senior Systems Administrator (Unix/Linux) to provide advanced technical support to the US Navy. In this role, you will deliver reliable and secure IT infrastructure services across multiple Naval bases. This position plays a critical role in ensuring system availability, security compliance, and operational effectiveness in support of mission requirements. **Job Duties/Responsibilities:** + Install, configure, monitor, and maintain Unix/Linux servers. + Apply security patches, updates, and system hardening in compliance with DoD guidelines. + Manage backups, restores, and disaster recovery. + Troubleshoot performance and operational issues. + Support virtualization, cloud integration, and hybrid deployments. **Required Clearance:** TS/SCI (#tssci) **Required Qualifications:** + 6 years of professional experience in Unix/Linux system administration. + Expertise in backup/recovery, software management, system security, hardware/software installation, troubleshooting, and tuning. + Familiarity with TCP/IP and major security tools (e.g., firewalls) plus vulnerability management. + Required Certification: IAT Level III Our Lead Senior Systems Administrator (Unix/Linux) earn between $110,000 – $185,000. 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. AT&T will consider for employment qualified applicants in a manner consistent with the requirements of federal, state and local laws We expect employees to be honest, trustworthy, and operate with integrity. Discrimination and all unlawful harassment (including sexual harassment) in employment is not tolerated. We encourage success based on our individual merits and abilities without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, disability, marital status, citizenship status, military status, protected veteran status or employment status