Senior Detection & Response Engineer — AI-First Security

Triwill Group; Boston, Northern (MA, KY); Hybrid; USD 142,000 - 212,000; Full time

Benefits offered by this job

Annual bonus

Equity

Sign-on bonus

Health benefits

Wellbeing benefits

Job summary

Klaviyo is seeking a Senior Security Engineer to join the Detection & Response Team. You will develop detections, triage alerts, lead investigations, and automate threat-hunting workflows across enterprise, cloud, and product environments.

You will build AI-first security tooling, work with Threat Intelligence, and contribute to incident response and forensics while on-call and mentoring junior engineers. This is an engineering-driven role emphasizing automation and scalable security operations.

Qualifications

• 5+ years of hands-on security experience in modern cloud environments.
• Experience 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 (SQL, Splunk).
• Familiarity with large-scale data pipelines and data engineering techniques.
• Proficient in programming languages to automate/build (Python, Go).
• Git/GitHub and CI/CD automations.

Responsibilities

• Develop, test, and deploy high-fidelity rule-based and anomaly-based detections as code.
• Detect and respond to cyber threats using security data lake, SIEM, and cloud platforms.
• Respond to alerts and drive end-to-end incident investigations.
• Perform digital forensic investigations including collection and analysis of evidence.
• Automate and codify detection and response workflows and processes.
• Build security tooling to drive automation across the D&R lifecycle.
• Improve and maintain detection and response pipelines and underlying systems.
• Collaborate with Threat Intelligence to identify and respond to threats.
• Develop AI-first security systems to automate detection and response operations.
• Conduct threat hunts across corporate, cloud and product environments.
• Support data engineering workflows for core security data lake and SIEM platforms.
• Be an active member of D&R on-call rotations.
• Coach and mentor security engineers in D&R.

Skills

Security engineering

Threat hunting

Incident response

Detection-as-code

SQL/Splunk

Python/Go

Git/GitHub CI/CD

Cloud platforms

Tools

SIEM

Data lake

AI/ML tooling

Job description

Klaviyo is seeking a Senior Security Engineer to join the Detection & Response Team. You will develop detections, triage alerts, lead investigations, and automate threat-hunting workflows across enterprise, cloud, and product environments.

You will build AI-first security tooling, work with Threat Intelligence, and contribute to incident response and forensics while on-call and mentoring junior engineers. This is an engineering-driven role emphasizing automation and scalable security operations.