Senior Systems Administrator

Company: Semper Valens Solutions
Location: San Antonio
Posted on: February 16, 2026

Job Description:

Job Description Job Description Senior Systems Administrator Full Time, Lackland AFB, TX Secret clearance with TS/SCI eligibility This position is contingent upon contract award Job Description: Provides senior technical leadership for complex server and virtualization environments. Primary Responsibilities Lead troubleshooting for high-impact server incidents. Provide advanced system design and optimization. Mentor junior administrators. Support audits, compliance efforts, and cybersecurity coordination. Security Requirements U.S. Citizenship required Active TS/SCI eligibility required Valid CI Polygraph required or ability to obtain within 6 months (for NSA access) Baseline Certifications Proficiency in Microsoft Active Directory; Microsoft Server 2008, or higher; proficiency in VMWare 5.1or higher and VSphere Administration DoD 8570 / 8140 compliant IAT Level II (Security CE preferred), current and verifiable About Semper Valens Solutions: Semper Valens Solutions, Inc. (SVS) is a Service-Disabled Veteran Owned Small Business (SDVOSB) providing Cost Effective Software and Systems Engineering, Field Support, Training and Full Life cycle Support Management to the DOD and VA community. At Semper Valens, our vision is to remain a creative, cutting edge and cost-effective solutions provider where our shared intellect, industry experience, and technology excellence, make a positive difference in our customer's success. Our solutions help bridge the gap between IT and business prioritizations to optimize budgets, risks, and operational processes. We search for outstanding technical professionals, hiring at all levels of the experience spectrum; intermediate, journeyman and senior. Consider us for your career plan. Semper Valens Solutions is an Equal Opportunity Employer Semper Valens Solutions proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital/parental status, pregnancy/childbirth, or related conditions, physical or mental disability, genetic information, status as a Disabled Veteran, Recently Separated Veteran, Active-Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law. If you require a reasonable accommodation to apply for a position with Semper Valens Solutions through its online applicant system, please contact Semper Valens Solutions Human Resources Department at (830) 899-6870.Semper Valens Solutions is an affirmative action/equal opportunity employer - minorities, females, disabled, and protected veterans are urged to apply. Applicants have rights under Federal Employment Laws. All Jobs at Semper Valens Solutions: https://sempervalens.com/careers

Keywords: Semper Valens Solutions, Pflugerville , Senior Systems Administrator, IT / Software / Systems , San Antonio, Texas