Senior Systems Support Specialist - TS/SCI (Onsite)

AMERICAN SYSTEMS; Colorado; On-site; USD 94,000 - 162,000; Full time

Job summary

AMERICAN SYSTEMS is seeking an experienced Systems Support Specialist III to support the NISSC 3 program at Cheyenne Mountain, Colorado. This role provides onsite and oncall system administration, troubleshooting, maintenance and user support in a TS/SCI environment, ensuring operational readiness and data integrity.

Responsibilities include leading day-to-day execution on complex tasks, mentoring junior team members, and delivering precise status updates to program leadership.

Qualifications

• 7–10 years in systems or network administration in secure, mission-critical environments (DoD or similar).
• Strong leadership across maintenance, integration, and data management.
• Experience allocating resources, monitoring progress, and ensuring quality deliverables.
• Ability to provide precise, timely status updates to management and stakeholders.
• Experience aligning tasks with program objectives for integrated operations.
• Strong documentation for logs, incidents and technical records.
• Bachelor’s degree or equivalent DoD/military training in relevant field.
• Active TS/SCI clearance required to start.
• DoD 8140 cert and Cloud+/GSEC/Security+/SSCP or equivalent preferred.

Responsibilities

• Provide onsite and oncall system administration and operational support.
• Troubleshoot and correct system, network, and software issues.
• Conduct preventive and corrective maintenance, applying patches and config changes.
• Provide user support and training; resolve access issues and capture trends.
• Collect, update, and maintain operational logs and reports.
• Perform incident response, triage, escalation, resolution, and documentation.
• Backup and restore operations to protect mission data.
• Support system administration and database functions as needed.
• Ensure procedural compliance and proper recordkeeping for audits.

Skills

Leadership

Resource planning

Issue resolution

Stakeholder communication

Scheduling

Education

Bachelor’s degree in IT or related field

Equivalent DoW training

Tools

DoD 8140 certification

Job description

AMERICAN SYSTEMS is seeking an experienced Systems Support Specialist III to support the NISSC 3 program at Cheyenne Mountain, Colorado. This role provides onsite and oncall system administration, troubleshooting, maintenance and user support in a TS/SCI environment, ensuring operational readiness and data integrity.

Responsibilities include leading day-to-day execution on complex tasks, mentoring junior team members, and delivering precise status updates to program leadership.