Senior Security Implementation Specialist (Remote, CA)

Position Overview We are looking for a Senior SIEM Onboarding Engineer to lead the end-to-end onboarding of log sources and security telemetry into Microsoft Sentinel and CrowdStrike Falcon Next-Gen SIEM. This is an engineering-focused role responsible for designing, implementing, validating, and documenting integrations before formally transitioning them to the Security Operations Center (SOC). Working within a highly collaborative cybersecurity team, the successful candidate will serve as a technical subject matter expert, drive continuous improvement initiatives, and work directly with customers on complex security projects. Responsibilities Plan, design, test, and deploy log source integrations into Microsoft Sentinel and CrowdStrike Falcon Next-Gen SIEM. Act as the subject matter expert for Microsoft Sentinel and provide expertise in SIEM engineering and onboarding activities. Design and maintain Microsoft Sentinel data collection capabilities, including data connectors, Data Collection Rules (DCRs), KQL transformations, custom tables, Azure Monitor Agent deployment, syslog/CEF forwarding, and custom log ingestion. Design and maintain CrowdStrike Falcon Next-Gen SIEM onboarding capabilities, including data connectors, Falcon Log Collector deployments, HEC ingestion, routing pipelines, and custom parsers. Build and maintain API-based integrations and automation scripts using technologies such as REST APIs, PowerShell, Python, and Bash. Optimize data ingestion for quality,