SIEM/Detection Engineer

Mantis Security is a leading specialty firm of high caliber talent who specialize in Cyber Operations, Cyber Defense, Information Assurance, Software Development, DevSecOps, Security Engineering, and Cloud Engineering. We enable and protect our nation's most important IT assets and invest in the long-term career development of every employee! We are currently looking for the next SIEM Engineer to join our team of experts!What You'll Be DoingAs a SIEM / Detection Engineer at Mantis Security, you'll help improve how we identify and respond to threats by ensuring our security data is collected, correlated, and turned into effective detections. You'll work closely with SOC analysts and engineers to continuously improve the team's visibility and detection capabilities.Develop, tune, and maintain Splunk searches, alerts, correlation rules, and dashboardsBuild and improve detection logic to identify suspicious and malicious activity while reducing false positivesSupport the onboarding, parsing, normalization, and validation of security log sourcesIdentify gaps in logging, telemetry, and detection coverage and help implement improvementsTranslate emerging threats and attacker techniques into actionable detections using frameworks such as MITRE ATT&CKSupport SOC investigations and threat hunting by developing queries and correlating activity across multiple data sourcesTroubleshoot SIEM data ingestion, search, alerting, and performance issuesDocument detection logic, configurations, processes, and recommended improvementsWhat We're Looking For10+ years of cybersecurity experience, including hands-on experience with SIEM or security monitoring technologiesStrong Splunk experience, including SPL searches, correlation searches, dashboards, and alert developmentExperience developing and tuning security detections in a SOC environmentUnderstanding of security logging across Windows, Linux, network, endpoint, identity, and cloud environmentsExperience onboarding and troubleshooting security data sources within a SIEMStrong understanding of common attack techniques and how to translate them into detection logicFamiliarity with MITRE ATT&CK, incident response, and threat huntingRelevant cybersecurity or SIEM certification such as Security+, CySA+, GIAC, or Splunk certificationNice to HavePrevious SOC Analyst or incident response experienceExperience supporting DoD, Intelligence Community, or other federal environmentsExperience with AWS and cloud-based security telemetryExperience with Python, PowerShell, or other scripting languages