K
Klaviyo
Senior Security Engineer
Skills
Data EngineeringPythonGolangRData AnalysisMachine LearningAIGitHub
7 days ago
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Important information
Salary:
$141,600 – $212,400 / year
Location:
Boston, MA, USA
Work mode:
Hybrid
Published on:
21 October 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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