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

• 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).