Senior Security Information Event Management (SIEM) Analyst

St Louis, MO, us on site Until 8/22/2026 H-1B sponsor history First posted March 21, 2025 Last posted March 21, 2025
Job description

CACI provides information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian clients. A member of the Fortune 1000 Largest Companies and the Russell 2000 Index, CACI provides dynamic careers for approximately 14,900 employees working in over 120 offices worldwide.

CACI has an immediate opening for a Senior Security Information Event Management (SIEM) Analyst to support a Government client in Computer Network Defense. The candidate should have be familiar with a wide range of security tools and understand basic security fundamentals


Under general supervision, the Senior SIEM Analyst will:


 Monitor incoming event queues using security management tools.
 Identify, categorize, prioritize, and investigate correlated events.
 Perform investigation and triage of events and incidents and escalate according to SOPs.
 Monitor/and work ticket queue for events and incidents.
 Maintain shift logs with relevant activity.
 Document investigation results and provide relevant details for final analysis.
 Develop reports, dashboards, real-time rules, filters, and active channels, etc.
 Provide event/incident procedure, long-term analysis, and investigation into NGA network activity and provide investigation reports.
 Provide content development to include reports, dashboards, real-time rules, filters and active channels.
 Configure SIEM tool performance and event data quality to maximize SIEM system efficiency.
 Assist NGA cyber security teams with device event correlation.
 Develop and institute standard procedures for the “front-end” operation of the SIEM system as directed by the government.
 Assist Network Analysts with the development of rules, filter, active channels, and onboarding of new programs.

Required Qualifications:


• Must have current TS/SCI and able to pass CI polygraph with 60 days of hire
• A Master’s degree
• 10 or more years of experience in related field with minimum 6 years in SIEM tool analysis
• DoD 8570 Management Level III
• Event and Incident Analysis with ArcSight
• Filtering of event data into dashboards
• Reporting formats
• Correlation Rule Development with ArcSight, SourceFire or other IDS/ SIEM tool
• Development experience in Smart/Flex Connectors
• Content Analysis, Development and Testing
• Web Content Filtering Analysis, Development and Testing

Desired Qualifications:


• Master’s degree in Computer Information Systems, Computer Science, Information Technology, Information Science, Information Systems, or a related academic discipline of science, technology, engineering, or mathematics
• ISC2 recognized professional certifications
• SIEM Content Engineering Experience
• Knowledge of technical writing and documentation and the ability to map processes and procedures back to roles and responsibilities within the organization

Education and Experience:


Master’s degree with 10 or more years of related experience.

All your information will be kept confidential according to EEO guidelines.

About this role

Summary

Monitor, analyze, and develop security event management systems for national security.

Job title

Senior Security Information Event Management (SIEM) Analyst

Experience level

10+ years

Industry

government

Location requirements

St Louis, MO, remote work not specified

Salary

Not specified

Visa sponsorship

H-1B sponsor history

Management role

No

Skills & keywords

Required skills

TS/SCICI polygraphSIEMArcSightevent analysisincident analysiscontent developmentfilteringcorrelation rulesSmart/Flex connectors

Preferred skills

Master’s in computer science or relatedISC2 certificationsSIEM content engineeringtechnical writing

Specializations

SIEMcybersecurityincident analysiscontent developmentnetwork security
Locations

Structured locations inferred from the posting.

St. Louis, MO, USA

On-site City