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Research Innovations incorporated Senior Systems Administrator (Corp205) in San Antonio, Texas

WHAT YOU WILL BE DOING

::: {qa="posting-requirements"} - Independently administering and troubleshooting SELinux (RHEL 7/8+) and Windows Server systems in offline/air-gapped classified environments. - Performing operating system hardening using DISA STIGs and SCAP tools, validating findings, and remediating vulnerabilities with an understanding of security impact. - Building, patching, and maintaining physical and virtual servers and workstations (Windows and SELinux). - Administering VMware vCenter and ESXi environments, including patching, upgrades, lifecycle management, and troubleshooting in offline/air-gapped networks. - Managing Active Directory, including users, groups, GPOs, service accounts, and authentication issues. - Performing system and security log analysis, identifying root cause, and implementing corrective actions. - Applying RMF and NIST SP 800-53 controls to support ATO maintenance for SELinux, VMware, and Windows systems. - Supporting vulnerability scanning, auditing, patching cycles, malware scanning, and documentation of results. - Managing and troubleshooting network devices (switches, routers, firewalls) in DoD-compliant environments. - Producing and maintaining technical and security documentation aligned with government contractor standards. - Providing direct technical support and guidance in secure facilities. :::

WHAT YOU HAVE DONE

::: {qa="posting-requirements"} - Minimum 6 years of hands-on Linux and Windows system administration in production environments. - Demonstrated ability to manage users, services, logs, storage, and system troubleshooting on SELinux systems. - Hands-on experience administering VMware vCenter and ESXi hosts, including patching and upgrades. - Experience implementing and remediating DISA STIGs and validating results using SCAP tools. - Experience administering Active Directory and troubleshooting authentication and GPO issues in mixed Windows/Linux environments. - Hands-on experience managing firewalls, network switches, and routers. - Experience with vulnerability scanning tools and host-based security tools (AV, HIDS/NIDS, SIEM). - Experience supporting RMF, IA controls, and ATO-related documentation. - Ability to work independently in classified environments with minimal supervision.

#LI-MC1

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::: {qa="closing-description"}

At RII, we believe that diversity in our workforce is critical to our success. We strive to hire great people from a wide variety of backgrounds, not just because its the right thing to do, but because it makes us stronger. We work to help your intellectual passions and creativity thrive. Its one of our core values: Let your geek flag fly.

We also offer all employees comprehensive benefits including: flexible work schedules, health insurance coverage, paid time off, 401k with a company match, paid parental leave, access to wellness programs and much more. You get this all from day one, and all paid for by RII.

Its all part of another of our core values: Stay human. Its why our comfortable and colorful offices such as our headquarters, include a community game room, pantry, massage chair, and an escape room, among other amenities. Its why we have community ambassadors and regular community events.

Research Innovations, Inc. is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender, gender identity or expression, national origin, genetics, disability status, protected veteran status, age, or any other characteristic protected by state, federal or local law.

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::: {qa="ai-disclaimer"}

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. Th se tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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