Senior Security Engineer

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Senior Security Engineer in USA

Klaviyo
Full time
Email

USA
10/21/2026
Report

Boston, MA

Responsibilities

Build systems that support security observability for detection and response.
Develop AI-first systems to automate detection and response operations.
Onboard, normalize, and optimize security logging data for large-scale analysis, detection engineering, machine-learning model deployment, and incident querying.
Develop rule-based and/or machine-learning-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 threat hunts and participate in Detection and Response on-call rotations.

Requirements

5+ years of experience in software, security, and/or data engineering.
An 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.
Proficiency in programming languages such as Python, Go, or similar.
Proven experience with Git, GitHub, and CI/CD automations.
Familiarity with threat-actor tactics, techniques, and procedures.
Experience participating in detection and response or incident-response on-call rotations.
Strong continuous-learning, communication, teamwork, and self-management skills.

Benefits

Base salary range of $141,600—$212,400 USD across U.S. locations, with additional compensation and benefits potentially including annual cash bonus, equity, sign-on payments, and health, welfare, and wellbeing benefits.
The role may require up to 10% travel for onboarding, client or partner work, team meetings, and industry events, coordinated in advance.
Klaviyo provides accommodations as needed and supports an equal-opportunity, nondiscriminatory workplace.

Salary: $142k - $212k/yr

Klaviyo

Klaviyo (NYSE: KVYO) is the autonomous B2C CRM. Powered by its built-in data platform and AI, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster. Klaviyo (CLAY-vee-oh) helps over 1...

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