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Senior Security Engineer

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Onsite

Senior Security Engineer

Klaviyo

Senior Security Engineer

Skills

Data EngineeringPythonGolangRData AnalysisMachine LearningAIGitHub

2 months ago

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Important information


Salary:

$141,600 – $212,400 / year

Location:

San Francisco, CA, USA

Work mode:

Onsite

Published on:

8 September 2026

What they need


Who you are

  • 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 or similar)
  • 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

What the job involves

  • Klaviyo is looking for a Senior Security Engineer to add to our growing Detection and Response (D&R) Team
  • This is a hands-on technical role that involves building and maintaining secure, reliable, and scalable detection and response systems to enhance our security observability capabilities
  • This role will also be responsible for participating in full end-to-end detection development and response lifecycle and support with threat response operations
  • As a Senior Security Engineer, you will have the opportunity to leverage your security and engineering skills to provide thought leadership, solve complex security challenges and ultimately improve Klaviyo’s overall security posture
  • 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

Benefits

  • Private medical insurance
  • Medical
  • Dental
  • Vision
  • Lifestyle spending account
  • Commuter benefits
  • Modern Health - wellness platform
  • Parental leave
  • Company equity
  • Employee stock purchase plan
  • Health savings account (HSA)
  • Flexible spending accounts (FSAs)
  • Employee assistance program (EAP)
  • 401(k) plan with company match
  • Flexible paid time off (FPTO)
  • 13 company holidays
  • Paid parental bonding leave
  • Medical, Dental, Vision
  • Pension
  • Financial coaching
  • Life insurance
  • Income protection
  • Annual leave - up to 25 annual leave days
  • 10 company holidays (8 bank holidays + 2 recharge days)
  • Family leave
  • Cycle to Work benefit
  • Mental health benefits

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