Mission Systems Support Specialist II — TS/SCI Onsite

AMERICAN SYSTEMS; Colorado; On-site; USD 82,000 - 137,000; Full time

Job summary

AMERICAN SYSTEMS seeks a Systems Support Specialist II for the NISSC 3 program at Cheyenne Mountain, Colorado. The role provides onsite and on-call system administration, troubleshooting, maintenance, and user support in a TS/SCI environment to ensure system availability, data integrity, and compliant documentation.

Responsibilities include incident response, backup/restore, maintenance, and performance optimization, with emphasis on secure operations and detailed logging.

Qualifications

• Bachelor’s degree in Information Technology, Cybersecurity, Computer Science, Information Systems, Data Science, Software Engineering, or a closely related field.
• Equivalent DoW/Military training in systems administration, network operations, or a related technical discipline.
• 4–6 years of relevant experience in systems or network administration, systems support, or similar technical roles in secure, missioncritical environments.
• Expertise in system administration and troubleshooting to support multiple mission systems.
• Strong skills in preventive and corrective maintenance to ensure system availability and operational readiness.
• Experience providing responsive user support and training.
• Proficiency in managing process documentation, operational logs, and incident/deficiency reports.
• Experience supporting incident response, backup/restore, and documentation activities in accordance with established procedures.
• Ability to support performance optimization efforts and oversee compliance with procedural and documentation standards.
• Minimum: Active TS/SCI clearance required to start.
• Holds a DoW 8140 qualifying certification; one or more of the following (or equivalent) is required/preferred: Cloud+ / GSEC / Security+ / SSCP

Responsibilities

• Provide onsite and oncall system administration and operational support for multiple mission systems at Cheyenne Mountain.
• Troubleshoot and resolve hardware, software, network, and system performance issues affecting mission operations.
• Conduct preventive and corrective maintenance, including applying patches, updates, configuration changes, and performance tuning.
• Provide user support and training for system access, basic operations, and issue resolution.
• Collect, maintain, and update operational logs, incident and deficiency reports, and checklists in accordance with program and security standards.
• Perform incident response, including initial triage, escalation, coordination with higher-tier support, and closure documentation.
• Execute backup and restore operations to ensure data integrity, availability, and continuity of operations.
• Support system administration and basic database support tasks as needed to maintain operational environments.
• Oversee procedural compliance and ensure all records, logs, and reports meet required operational, security, and audit standards.
• Act as a technical resource for performance optimization, data integrity, role continuity, and support to management status reporting.

Skills

System administration

Troubleshooting

User support

Documentation

Incident response

Education

Bachelor’s degree in IT / CS / related

Equivalent DoW/Military training

Tools

DoW 8140

Cloud+

GSEC

Security+

SSCP

Job description

AMERICAN SYSTEMS seeks a Systems Support Specialist II for the NISSC 3 program at Cheyenne Mountain, Colorado. The role provides onsite and on-call system administration, troubleshooting, maintenance, and user support in a TS/SCI environment to ensure system availability, data integrity, and compliant documentation.

Responsibilities include incident response, backup/restore, maintenance, and performance optimization, with emphasis on secure operations and detailed logging.