Senior Security Engineer: AI-Driven Detection & Response

Klaviyo Inc.; Denver, Northern (CO, KY); Hybrid; USD 142,000 - 212,000; Full time

Job summary

Klaviyo seeks a Senior Security Engineer to join our Detection and Response team. You will build secure, observable security systems and lead end-to-end detection development and response lifecycle.

The role combines hands-on engineering with threat response operations and requires strong coding, data analysis, and collaboration across teams. We value automation-first and AI-first approaches, experience with SIEM and data pipelines, and the ability to stay current with evolving security

Qualifications

• 5+ years of experience in software, security, and/or data engineering.
• Automation-first and AI-first approach for all work performed.
• Experience with centralized logging, data lakes, and SIEM solutions.
• Familiarity with large-scale data pipelines and data engineering techniques.
• Proficient in programming languages to automate/build (e.g., Python, Go).
• Proven experience with git/GitHub and CI/CD automations.
• Familiarity with tactics, techniques, and procedures used by threat actors.
• Experience being part of detection and response or incident response on-call.
• Strong passion for continuous learning and staying updated on evolving technology.
• Strong oral and written communication skills.
• Team player with a strong, self-managing work ethic.

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

Security engineering

Automation

Logging / SIEM

Data pipelines

Python

Go

Git / GitHub

CI/CD

Threat intelligence

Incident response

Communication

Team player

Tools

GitHub

CI/CD

Job description

Klaviyo seeks a Senior Security Engineer to join our Detection and Response team. You will build secure, observable security systems and lead end-to-end detection development and response lifecycle.

The role combines hands-on engineering with threat response operations and requires strong coding, data analysis, and collaboration across teams. We value automation-first and AI-first approaches, experience with SIEM and data pipelines, and the ability to stay current with evolving security