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NISSC III Systems Support Specialist III

Job in Arvada, Jefferson County, Colorado, 80004, USA
Listing for: Encore Vet Group
Full Time position
Listed on 2026-06-02
Job specializations:
  • IT/Tech
    Systems Administrator, IT Support
Salary/Wage Range or Industry Benchmark: 60000 - 80000 USD Yearly USD 60000.00 80000.00 YEAR
Job Description & How to Apply Below

Overview

AMERICAN SYSTEMS is seeking a Systems Administrator, Senior level to support the NISSC 3 program at Cheyenne Mountain, Colorado. The position delivers technical and operational support for mission systems by providing onsite and on‑call coverage for system administration, troubleshooting, maintenance, and user support in a TS/SCI environment.

Responsibilities
  • Deliver onsite and on‑call technical and operational support for mission systems at Raven Rock, including system administration, monitoring, and health checks.
  • Perform troubleshooting and corrective actions for hardware, software, network, and system performance issues.
  • Conduct preventive and corrective maintenance, including software patches, updates, configuration changes, and performance tuning.
  • Provide first‑line 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 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 requirements.
  • Act as a technical resource for performance optimization, data integrity, continuity of operations, and support of management status reporting.
Qualifications
  • 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 in resource allocation, monitoring progress, and ensuring quality deliverables to drive task success.
  • 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, configuration and asset records, and technical documentation.
  • 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
  • Security+
  • SSCP
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