Senior Security Engineer, AI-Driven Detection & Response

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

Job summary

Klaviyo is seeking a Senior Security Engineer to join our Detection and Response (D&R) Team. This hands-on role builds and maintains secure, scalable detection and response systems and participates in end-to-end development and incident support, applying your security and engineering skills to strengthen our observability and posture.

You will develop high-fidelity detections, automate workflows, engage in threat hunts, and participate in on-call rotations, collaborating with data engineers and

Qualifications

• 5+ years of experience in software, security, or data engineering.
• Automation-first and AI-first approach to work.
• Experience with centralized logging, data lakes, and SIEM solutions.
• Familiarity with large-scale data pipelines and data engineering techniques.
• Proficient in Python or Go for automation.
• Git/GitHub and CI/CD automations experience.
• Familiarity with threat actor TTPs.
• On-call experience in detection and response.
• Strong communication and self-management skills.

Responsibilities

• Build systems that facilitate security observability for detection and response
• Develop AI-first security systems to automate detection and response operations
• Onboard, normalize and optimize security logging data for large-scale data analysis, detection engineering, deployment of ML models, and efficient querying during incidents.
• Develop high-fidelity rule-based and/or ML-based detections as code
• Respond to security alerts, cyber threats, and security incidents
• Drive end-to-end incident response investigations
• Automate and codify detection and response workflows and processes
• Conduct ad-hoc threat hunts and be an active member of D&R on-call rotations

Skills

5+ years experience

Automation-first

AI-first approach

Centralized logging

Data lakes

SIEM systems

Data pipelines

Python/Go

Git/GitHub

CI/CD automation

Threat actor TTPs

On-call experience

Communication skills

Self-managing

Team player

Job description

Klaviyo is seeking a Senior Security Engineer to join our Detection and Response (D&R) Team. This hands-on role builds and maintains secure, scalable detection and response systems and participates in end-to-end development and incident support, applying your security and engineering skills to strengthen our observability and posture.

You will develop high-fidelity detections, automate workflows, engage in threat hunts, and participate in on-call rotations, collaborating with data engineers and