Klaviyo
Senior Security Engineer - Detection and Response
$142K–$212K
Boston, MA +3 · Senior · Full-time · Posted Oct 20, 2026
- Location
- Boston, MA
Boston, Massachusetts, United States
Denver, Colorado, United States
San Francisco, California, United States - Experience
- 5+ years in software, security, and/or data engineering.
About the job
Build and operate scalable security detection and response systems, develop detections, and investigate security incidents and threats.
What you'll do
- Build security observability systems and automate detection and response workflows, including AI-first systems.
- Develop rule-based and/or ML-based detections as code; onboard and optimize security logging data and pipelines.
- Respond to alerts and incidents, lead investigations, conduct threat hunts, and participate in on-call rotations.
What they ask for
- Experience with centralized logging, data lakes, and SIEM solutions.
- Proficiency in programming languages such as Python, Go, or similar.
- Experience with git/GitHub and CI/CD automations.
- Familiarity with threat actor tactics, techniques, and procedures; experience in detection/incident response on-call.
Pay
$141,600 — $212,400 USD (base salary)
Tools
Python, Go, git/GitHub, CI/CD, SIEM
AI focus
Develop AI-first security systems to automate detection and response operations; deploy ML models for detection and develop ML-based detections as code.
Model-written summary · the original posting is authoritative