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SIEM ANALYST
Job in
Herndon, Fairfax County, Virginia, 22070, USA
Listed on 2026-06-12
Listing for:
Peraton
Full Time
position Listed on 2026-06-12
Job specializations:
-
IT/Tech
Cybersecurity -
Engineering
Cybersecurity
Job Description & How to Apply Below
Qualifications
- 2 years with BS/BA; 0 years with MS/MA; 6 years with no degree
- Clearance:
Active TS/SCI clearance. - Candidate must meet ONE of the following:
- Bachelor’s degree in Cybersecurity; OR
- Relevant professional certification or equivalent experience (examples: CySA+; GCIA; CEH); OR
- Relevant DoD/military training (example: Splunk Core Certified Power User).
- Required experience and skills:
- SIEM, SOC, or security analytics experience with hands‑on alert investigation and correlation responsibilities.
- Proficiency writing and tuning correlation logic/queries in one or more SIEM platforms (e.g., Splunk, Elastic, QRadar, Sentinel) and working knowledge of log formats/normalization.
- Experience with endpoint telemetry, network flows, authentication logs, cloud logs, and threat‑intelligence enrichment.
- Strong incident documentation, analytic writing, and case management skills; ability to produce reproducible investigation artifacts.
- Capability to identify and remediate data‑quality and ingestion issues in coordination with data engineering teams.
- Desired:
- Prior DoD/ARNG SOC or classified‑environment SIEM experience.
- Familiarity with MITRE ATT&CK mapping for detection use cases, SOAR integrations, and detection performance metrics (precision/recall, MTTD).
- Experience mentoring junior analysts and contributing to a detection engineering backlog.
We are seeking a highly skilled and innovative SIEM Analyst to join our team in the greater DMV area, supporting the Army National Guard.
Responsibilities- Review complex SIEM events, logs, and alerts; correlate telemetry from network, endpoint, identity, and cloud sources to detect anomalous activity.
- Investigate incidents through multi‑source correlation, timeline reconstruction, enrichment with threat intelligence, and IOC validation.
- Build and update intermediate‑level correlation rules, alert logic, and detection filters to address evolving use cases and improve fidelity.
- Document triage results, maintain investigation records with analytic notes, and categorize incidents per escalation criteria.
- Support tuning by identifying systemic false positives, refining rule parameters, and proposing detection enhancements.
- Collaborate with SOC analysts, threat hunters, cybersecurity engineers, and incident responders to provide technical context and preliminary root‑cause assessments.
- Maintain SIEM dashboards and operational reporting: update visualizations, refine queries, and validate metric accuracy.
- Verify ingestion, parsing, and normalization of log sources; perform data‑quality checks and report visibility gaps for remediation.
- Apply detection playbooks and organizational policies to sustain continuous monitoring across all enclaves.
- Contribute to SIEM operations improvement by refining analytic workflows, updating documentation, and adopting new platform capabilities.
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