Klaviyo

Klaviyo

Principal Engineer, Security

Boston, MA · Principal

Sponsorship not specified$244k-$366kDetected 28 days ago
Code ReviewAWSGCPCloud PlatformsCI/CDSite Reliability EngineeringMachine LearningAgentic AIDetection EngineeringComplianceOnboardingCustomer SuccessZero TrustCommunication

About the role

  • 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?
  • This is an individual-contributor role, no direct reports.

Responsibilities

  • Define and own Klaviyo's infrastructure security architecture: IAM frameworks, service-to-service auth, secrets management, network segmentation, and production access controls, designed to scale with our multi-tenant, multi-region footprint.
  • Build and maintain security guardrails as IaC modules
  • Own the vulnerability management program: SLO-backed triage and remediation, trend tracking, and systemic fixes, turn recurring vulnerability classes into solved engineering problems.
  • partner with the Core Infrastructure PE to embed security controls in CI/CD pipelines, paved roads, and the observability stack.
  • Lead threat modeling and security design reviews for high-risk architectural changes, accelerate delivery by making reviews lightweight and high-signal.
  • Partner with SRE, AppSec, and FinOps on cross-cutting initiatives: zero-trust progress, GDPR/compliance guardrails, and audit readiness for SOC 2/ISO 27001.
  • mentor Staff and Senior security engineers across teams through design pairing, code review, and example.
  • Transform workflows by putting AI at the center, building smarter systems and ways of working from the ground up.
  • Build and maintain security guardrails as IaC modules; codify controls into golden paths that teams inherit automatically so security improves with velocity, not against it.
  • Author security ADRs and RFCs; partner with the Core Infrastructure PE to embed security controls in CI/CD pipelines, paved roads, and the observability stack.

Requirements

  • Developer-centric mindset: You build tools and guardrails that other engineers adopt because they make their work easier-not because they're required to.
  • Experience securing AI/ML systems: model access controls, data privacy guardrails, and agentic system security boundaries.

Skills

  • Experience with zero-trust architecture and progressive access control in a large multi-tenant SaaS environment.
  • Deep familiarity with enterprise compliance frameworks (SOC 2, ISO 27001, GDPR) and the infrastructure controls that underpin them.
  • Track record of embedding security tooling into CI/CD and IaC pipelines adopted org-wide.
  • Security guardrails codified as IaC modules and enforced in paved roads; IAM and secrets management posture measurably improved.
  • Security SLO framework established; MTTR for critical vulnerabilities trending down; recurring vulnerability classes addressed systemically.
  • Zero-trust progress measurable against defined milestones; demonstrable audit readiness for SOC 2 / ISO 27001.

Compensation

  • This role may require up to 10% travel for purposes such as new hire onboarding, client or partner work if applicable, team meetings, and industry events.
  • Travel is coordinated in advance.
  • 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.
  • Our salary range reflects the cost of labor across various U.S. geographic markets.

Benefits

  • 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.
  • The base salary offered for this position is determined by several factors, including the applicant's job-related skills, relevant experience, education or training, and work location.

Equal opportunity

  • Klaviyo is committed to a policy of equal opportunity and non-discrimination.

Visa & Work Authorization

  • 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
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This listing is sourced directly from Klaviyo's careers page and normalized into a canonical job model.