Senior Security Engineer: AI-Driven Detection & Response

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

Job summary

Klaviyo is seeking a Senior Security Engineer to join the Detection & Response Team. The role covers end-to-end security operations across enterprise, cloud, and product environments, building AI-enabled tooling and automations to streamline detections and responses.

You will develop detections-as-code, triage alerts, lead investigations, perform threat hunting, and collaborate with Threat Intelligence to address sophisticated threats while advancing the D&R lifecycle with automation at scale.

Qualifications

• 5+ years of hands-on security experience in modern cloud environments.
• Experience in triaging and responding to cyber threats.
• Experience in large-scale log analysis, incident response and/or digital forensics.
• Experience with centralized security data lakes and SIEM solutions.
• Hands-on experience in writing detections-as-code.
• Solid data querying skills (e.g. SQL, Splunk).
• Familiarity with large-scale data pipelines and data engineering techniques.
• Proficient in programming languages to automate / build (e.g., Python, Go or similar).
• Proven experience with git/GitHub and CI/CD automations.
• Familiarity with tactics, techniques, and procedures used by threat actors.

Responsibilities

• Develop high-fidelity detections-as-code for cloud environments.
• Detect and respond to cyber threats using SIEM and data lake.
• Lead incident response investigations and threat hunts.
• Automate detection and response workflows.
• Coach and mentor security engineers within the detection & response team.

Skills

Python

Go

Detections-as-code

SIEM

Threat hunting

Incident response

Data analysis

Git/GitHub

CI/CD

Cloud security

SQL

Splunk

Tools

Splunk

GitHub

CI/CD

Job description

Klaviyo is seeking a Senior Security Engineer to join the Detection & Response Team. The role covers end-to-end security operations across enterprise, cloud, and product environments, building AI-enabled tooling and automations to streamline detections and responses.

You will develop detections-as-code, triage alerts, lead investigations, perform threat hunting, and collaborate with Threat Intelligence to address sophisticated threats while advancing the D&R lifecycle with automation at scale.