Senior Security Engineer – AI-Driven Detection & Response

Company: Klaviyo
Apply for the Senior Security Engineer – AI-Driven Detection & Response
Location: London
Job Description:

Klaviyo is seeking a Senior Security Engineer to join the Detection & Response Team. You will own end-to-end detection and response work across enterprise, cloud, and product environments, shaping automation and AI-driven security in production, with a team spanning multiple regions and time zones.

You will develop detections-as-code, hunt threats, triage alerts, and lead investigations while mentoring teammates and contributing to on-call rotations in a fast-paced, engineering-first security

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Posted: September 26th, 2026