Senior Security Engineer, AI-Driven Detection & Response

Klaviyo; San Francisco (CA); On-site; USD 142,000 - 212,000; Full time

Job summary

Klaviyo is seeking a Senior Security Engineer to join the Detection and Response team. This hands-on role builds secure, scalable detection and response systems and drives end-to-end detection development and incident response.

You will develop AI-first security capabilities, onboard and optimize logging data, craft rule-based and ML-based detections, and participate in on-call rotations to protect our customers and systems. Collaboration is essential.

Qualifications

• 5+ years in software, security, or data engineering.
• Automation-first and AI-first approach for all work performed.
• Experience with centralized logging, data lakes, and SIEM.
• Proficient in Python, Go or similar.

Responsibilities

• Build detection and response systems for security observability.
• Develop AI-first security systems to automate operations.
• Onboard and optimize security logging data for analysis and ML.
• Develop high-fidelity detections as code (rule-based/ML).
• Respond to security alerts and incidents.
• Lead end-to-end incident response investigations.
• Automate and codify detection and response workflows.
• Conduct threat hunts and participate in on-call rotations.

Skills

Automation-first

Python/Go

Communication skills

Threat detection

Incident response

Team player

On-call experience

Tools

Git/GitHub

CI/CD automation

SIEM

Data lakes

Logging systems

Job description

Klaviyo is seeking a Senior Security Engineer to join the Detection and Response team. This hands-on role builds secure, scalable detection and response systems and drives end-to-end detection development and incident response.

You will develop AI-first security capabilities, onboard and optimize logging data, craft rule-based and ML-based detections, and participate in on-call rotations to protect our customers and systems. Collaboration is essential.