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Senior Security Engineer - Threat Response

Boston, MA

At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit to see how we empower creators to own their own destiny.

Klaviyo is looking for a Senior Security Engineer to add to our growing Security Intelligence Operations Team. This is a hands-on role that involves responding to cyber threats and incidents, performing digital forensics and investigations, and automating threat response playbooks. As a member of the team, you will have the opportunity to work on complex security challenges and work with engineers across the enterprise to improve security posture of Klaviyo's Corporate and Cloud environments.

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What you'll be doing

  • Triage and respond to alerts, cyber threats and incidents
  • Drive end-to-end incident response investigations
  • Perform host and network based log analysis in a cloud first environment
  • Serve as the incident commander during incidents as needed
  • Develop and codify threat response processes and playbooks
  • Perform digital forensic investigations to include analysis, collection, and preservation of evidence
  • Build security tools to automate threat response tasks
  • Develop detailed post incident and investigation reports
  • Solution complex challenges and work on projects centered around security operations
  • Collaborate with detection engineers to identify threat detection use cases
  • Work with engineering stakeholders to improve security posture post investigations
  • Coach and mentor junior team members within the detection & response team

We'd love to hear from you if you have:

  • 4+ years of hands-on security operations experience in the modern cloud environments
  • Experience in triaging and responding to cyber threats, alerts, and incidents
  • Experience in log analysis, incident response and/or digital forensics
  • Experience with SIEM and centralized data lake logging (e.g., Splunk, Snowflake)
  • Experience with Security Orchestration, Automation, and Response (SOAR)
  • Experience securing cloud environments such as AWS, GCP, and/or Azure
  • Proficient in programming languages to automate/build features (e.g., Python, Go)
  • Understand techniques, tools and procedures used by threat actors
  • Strong fundamentals of linux and macOS
  • Automation-first approach for all work performed
  • Strong oral and written communication skills
  • Team player with a strong self-managing work ethic

The pay range for this role is listed below. Sales roles are also eligible for variable compensation and hourly non-exempt roles are eligible for overtime in accordance with applicable law. This role is eligible for benefits, including: medical, dental and vision coverage, health savings accounts, flexible spending accounts, 401(k), flexible paid time off and company-paid holidays and a culture of learning that includes a learning allowance and access to a professional coaching service for all employees.

Base Pay Range For US Locations:

$156,800-$235,200 USD

Get to Know Klaviyo

We're Klaviyo (pronounced clay-vee-oh). We empower creators to own their destiny by making first-party data accessible and actionable like never before. We see limitless potential for the technology we're developing to nurture personalized experiences in ecommerce and beyond. To reach our goals, we need our own crew of remarkable creators-ambitious and collaborative teammates who stay focused on our north star: delighting our customers. If you're ready to do the best work of your career, where you'll be welcomed as your whole self from day one and supported with generous benefits, we hope you'll join us.

Klaviyo is committed to a policy of equal opportunity and non-discrimination. We do not discriminate on the basis of race, ethnicity, citizenship, national origin, color, religion or religious creed, age, sex (including pregnancy), gender identity, sexual orientation, physical or mental disability, veteran or active military status, marital status, criminal record, genetics, retaliation, sexual harassment or any other characteristic protected by applicable law.

IMPORTANT NOTICE: Our company takes the security and privacy of job applicants very seriously. We will never ask for payment, bank details, or personal financial information as part of the application process. All our legitimate job postings can be found on our official career site. Please be cautious of job offers that come from non-company email addresses (, instant messaging platforms, or unsolicited calls.

You can find our Job Applicant Privacy Notice here .

Client-provided location(s): Boston, MA, USA
Job ID: Klaviyo-7594
Employment Type: Other

Perks and Benefits

  • Health and Wellness

    • FSA
    • Health Reimbursement Account
    • Fitness Subsidies
    • HSA With Employer Contribution
    • Health Insurance
    • Dental Insurance
    • Vision Insurance
    • Life Insurance
    • Short-Term Disability
    • Long-Term Disability
    • HSA
    • Mental Health Benefits
  • Parental Benefits

    • Family Support Resources
    • Non-Birth Parent or Paternity Leave
    • Birth Parent or Maternity Leave
    • Adoption Leave
  • Work Flexibility

    • Flexible Work Hours
    • Remote Work Opportunities
    • Hybrid Work Opportunities
  • Office Life and Perks

    • Company Outings
    • Commuter Benefits Program
    • Casual Dress
    • Happy Hours
    • Snacks
    • Some Meals Provided
    • Holiday Events
  • Vacation and Time Off

    • Leave of Absence
    • Personal/Sick Days
    • Paid Holidays
    • Unlimited Paid Time Off
    • Paid Vacation
  • Financial and Retirement

    • Company Equity
    • 401(K) With Company Matching
  • Professional Development

    • Learning and Development Stipend
    • Promote From Within
    • Shadowing Opportunities
    • Access to Online Courses
    • Leadership Training Program
    • Lunch and Learns
  • Diversity and Inclusion

    • Diversity, Equity, and Inclusion Program
    • Founder led
    • Employee Resource Groups (ERG)