Senior Security Engineer: AI-Driven Detection & Response

Klaviyo Inc.; Boston (MA); On-site; USD 142,000 - 212,000; Full time

Job summary

Klaviyo is seeking a Senior Security Engineer to join the Detection & Response Team. You will build detections, triage alerts, lead investigations, respond to incidents, perform threat hunts, and build tooling that scales across enterprise, cloud, and product environments.

This engineering-first, AI-enabled role emphasizes automation of detection and response workflows, collaboration with Threat Intelligence, mentoring teammates, and staying ahead of evolving threats in a fast-paced, global

Qualifications

• 5+ years of hands-on security experience in modern cloud environments.
• Experience in triaging and responding to cyber threats.
• Experience with large-scale log analysis, incident response and/or digital forensics.
• Proficient in SQL, Splunk, and data querying.
• Proficient in programming to automate/build (Python, Go).
• Experience with GitHub and CI/CD automations.
• Familiar with threat actors’ TTPs and on-call incident response.

Responsibilities

• Develop and deploy detections-as-code using engineering practices.
• Detect and respond to cyber threats using security data lake, SIEM, and cloud platforms.
• Lead end-to-end incident investigations and threat hunts.
• Perform digital forensics including evidence collection and analysis.
• Automate detection and response workflows and tooling.
• Collaborate with Threat Intelligence to identify sophisticated threats.
• Contribute to AI-first security systems for automated detection and response.
• Participate in on-call rotations and mentor teammates.

Skills

Python

Go

SQL

Splunk

GitHub

CI/CD automations

Incident response

Threat hunting

Tools

SIEM

Cloud platforms

Data lake

Job description

Klaviyo is seeking a Senior Security Engineer to join the Detection & Response Team. You will build detections, triage alerts, lead investigations, respond to incidents, perform threat hunts, and build tooling that scales across enterprise, cloud, and product environments.

This engineering-first, AI-enabled role emphasizes automation of detection and response workflows, collaboration with Threat Intelligence, mentoring teammates, and staying ahead of evolving threats in a fast-paced, global