Cyber Security Engineer III

System One • St. Louis, MO, United States • Posted June 14, 2026

Location St. Louis, MO
Job Type Full-time
Category other-general
Posted June 14, 2026
Job Title: Cyber Security Engineer
Location: St. Louis, MO
Work Model: Onsite
Position Type: 6 Month Contract to Hire
Clearance Requirement: Active TS/SCI required and ability to obtain poly

Job Summary

We are seeking a Cyber Security Engineer to support a mission critical NGA cybersecurity program in St. Louis, MO. This role will provide cyber threat intelligence, advanced cybersecurity analytics, security operations support, and incident response coordination across government systems and networks.

The Cyber Security Engineer will collect, analyze, and distribute threat intelligence from government sources, commercial feeds, open source reporting, and partner organizations to improve situational awareness of the cyber threat environment. This role will also support cybersecurity analytics, reporting, detection tuning, operational recommendations, and security monitoring activities for customer systems and networks.

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