Senior Systems Administrator

Senior Systems Administrator

ALEX – Alternative Experts is seeking a Senior Systems Administrator to support the management, maintenance, and security of enterprise IT systems in a federal environment. This role is responsible for ensuring system performance, reliability, and compliance with cybersecurity standards. The position requires advanced technical expertise, experience with secure system administration, 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

Training / Certifications (required alignment to DoDM 8140.03):

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 incluede).

Founded in 1987 and headquartered in Marshall, VA, ALEX - Alternative Experts, LLC (ALEX) is an ISO 9001:2015-certified Woman Owned Small Business that's changing the way government does business by delivering a powerful, industry-leading array of core services to help its clients achieve mission-critical objectives. ALEX provides a variety of benefits designed to help meet the needs of our employees. See a summary of ALEX's Employee Benefits for more information.

ALEX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, age, national origin, protected veteran status, or disability. Applicants must be able to perform the essential functions of the job.

In order to comply with the Equal Pay for Equal Work Act, we reasonably believe the pay range for this position is reasonable and within the guidelines. Multiple factors are taken into account with any offer of employment by ALEX, including experience, education, and skills.

Reasonable accommodations will be made to allow employees to meet the essential functions of the job unless those accommodations cause undue hardships to the employer. To request a reasonable accommodation, contact the Human Resources Department at View email address on click.appcast.io.

Veterans and Individuals with Disabilities are highly encouraged to apply.