Senior Systems Administrator

Responsibilities Support the management, maintenance, and security of enterprise IT systems in a federal environment Ensure system performance, reliability, and compliance with cybersecurity standards Require advanced technical expertise and the ability to operate within regulated environments supporting mission‑critical systems Requirements Administer, maintain, and secure enterprise IT systems, including servers, networks, and applications Ensure system availability, performance, and operational continuity through proactive monitoring and troubleshooting Implement and support system security controls in coordination with cybersecurity teams Support system accreditation and compliance activities, including RMF-related requirements Manage user access, permissions, and privileged account controls Install, configure, and maintain operating systems and system software Perform system updates, patching, and vulnerability remediation activities Develop and maintain system documentation, including configurations and standard operating procedures Support mission‑critical applications and enterprise systems Collaborate with cybersecurity, engineering, and support teams to ensure secure and efficient system operations Provide technical support and resolve system incidents in a timely manner Experience administering systems within secure or regulated environments Demonstrated experience supporting system security, compliance, and operational continuity Experience supporting federal or DoD IT environments Familiarity with RMF, ATO processes, and system authorization requirements Experience with enterprise environments, including virtualization, cloud platforms, or network infrastructure Strong troubleshooting, problem‑solving, and system optimization skills Ability to manage competing priorities in a mission‑focused environment 5 to 9 years of experience in systems administration, cybersecurity, or a related IT field Candidates must possess certification(s) in one or more of the following areas: IAT Level II (Information Assurance Technical): GSEC, Security+ CE, SSCP, or CCNA‑Security IAM Level II (Information Assurance Management): CAP, GSLC, CISM, CASP‑CE, or CISSP (or Associate of CISSP) Cyber Defense (preferred but highly valued): CEH, GCIA, CSIH, or GCIH Operating System / Computing Environment Certification: Applicable Operating System/Computing Environment (OS/CE) certification for systems requiring privileged access Education: Bachelor’s degree from an accredited institution; OR Certification aligned with CNSSI 4012, 4013, 4014, 4015, or 4016; OR Associate degree with a minimum of 10 years of relevant experience U.S. Citizenship Required due to federal contract. No visa sponsorship (OPT/CPT included). #J-18808-Ljbffr