NISSC 3 Systems Support Specialist III - LEAD

AMERICAN SYSTEMS is seeking a Systems Administrator, Senior to support the NISSC program at the Pentagon in Arlington, Virginia. This position provides onsite and oncall support for mission systems, ensuring system availability, responsive user support, and rigorous documentation in a TS/SCI environment. Responsibilities:

• Provide onsite and on call system administration and operational support for mission systems located at the Pentagon.
• Perform troubleshooting and corrective actions for hardware, software, network, and system performance issues.
• Conduct preventive and corrective maintenance, including applying patches, updates, and configuration changes.
• Provide user support and training, resolving access and usage issues and documenting recurring problems.
• Collect and maintain operational logs, incident and deficiency reports, and checklists per program and security standards.
• Execute incident response, including triage, escalation, coordination, and closure documentation.
• Perform backup and restore operations to ensure data protection and continuity of operations.
• Support system administration and database related activities as needed for mission systems.
• Ensure procedural compliance and that all records and reports meet operational, security, and audit requirements.
• Act as a technical resource for performance optimization, data integrity, and status reporting to management.

Do you have experience in User training (technical support)?, Do you have a Bachelor’s degree?, * 7-10 years of relevant experience in systems or network administration, systems support, or similar technical roles in secure, mission critical (DoD or similar) environments.

• Strong leadership capabilities in directing project/task execution across domains such as maintenance, integration, and data management.
• Experience allocating resources, monitoring progress, and ensuring quality deliverables.
• Demonstrated ability to resolve operational issues and provide precise, timely status updates to management and stakeholders.
• Experience managing schedules and aligning tasks with program objectives to support integrated operations across functional domains.
• Strong documentation skills for logs, incident reports, and technical records.
• Bachelor’s degree in Information Technology, Cybersecurity, Computer Science, Information Systems, Data Science, Software Engineering, or a closely related field,

OR Equivalent DoD/Military training in systems administration, network operations, or a related technical discipline.

• Minimum: Active TS/SCI clearance required to start.

• Holds a DoD 8140 qualifying certification; one or more of the following (or equivalent) is required/preferred:

• Cloud+
• GSEC

3.93.9 out of 5 stars Arlington, VA $94,400 - $185,100 a year - Full-time, These positions are being posted in anticipation of future employment opportunities, which may become available beginning around June 2026. Actual hiring and start dates will depend on contract award, organizational needs and other factors. Candidates may be considered for these or similar positions as opportunities arise. AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $94,400.00/Yr. - USD $156,000.00/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance. Wage Transparency Statement: AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $110,800.00/Yr. - USD $185,100.00/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance. EEO Statement: EEO Race/Sex/Disability Status/Veteran Status