Cyber Threat Detection Engineer (SIEM / Signature Development)Cyber Security Operations Specialist III - Advanced Cyber AnalyticsLocation: St. Louis, MO - on site
Time Type: Full time, Exempt
Clearance Required to Start: Active TS/SCI (U.S. citizenship required)
Additional Requirement: Must be able to obtain and maintain a Government polygraph (post-hire requirement)
Travel: None
Salary Range: $78,000 - $86,000
What You Will Do- Analyze trends and patterns to identify and predict previously undiscovered events, then develop or tune the rules, signatures, and scripts that catch them.
- Turn intelligence and incident reporting into deployed detection logic.
- Run regular Purple Team exercises and continuously validate countermeasures already deployed.
- Work with the Cyber Data Analytics team on SIEM alert efficiency, evaluating valid alerts against false positives.
- Support the Cyber Incident Response Team during live activity, predicting adversary response and locations of compromise to assist triage.
- Document work in the authorized ticketing system so any stakeholder can reconstruct the analysis.
What You'll Bring- S. citizenship and an active TS/SCI.
- Ability to successfully obtain and maintain a Government polygraph after hire.
- Education and experience, per the contract labor category criteria: Bachelor's degree in a field applicable to the position plus 6 years of relevant experience. Equivalents accepted - Master's plus 4, Associate's plus 8, or High School diploma/GED plus 10.
- 8+ years of related advanced cyber security analytics experience.
- A certification compliant with DoD 8140.01 and 8570.01-M IAT Level III and CSSP Analyst.
- Data mining or query building in a SIEM.
- Strong signature development and tuning, and strong network protocol analysis with protocol analyzers.
- Static file signatures (magic numbers) and good working knowledge of regular expressions.
Nice to Have- Hex editor comfort; Python, Bash, or PowerShell scripting.
- Purple Team tactics; cloud security - visibility gaps, data lakes, and data mining.
BenefitsMedical, dental, and vision insurance; 401(k) and Roth; Paid Time Off; and 11 paid Federal Holidays.
