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Klaviyo

Builds marketing software for consumer brands

Principal Engineer - Core Infrastructure

Platform EngineeringUpdated on Nov 10
Full-timeBoston, MA, USANo salary listedIn-person

About the Job

Requirements

  • At least 10 years of experience building and operating cloud platforms, including compute, networking, storage, and runtimes such as Kubernetes, with a track record of multi-region high availability and service-level objective rigor.
  • Deep technical expertise in Kubernetes, service mesh, Terraform and infrastructure as code, continuous integration and continuous delivery, and production observability.
  • Experience with databases and storage systems, including SQL and NoSQL databases and object, block, or file storage platforms.
  • Experience bringing AI into platform engineering, including copilot-assisted workflows, intelligent test generation, AIOps for incident triage and anomaly detection, and runbook automation, with clear security and cost boundaries.
  • Hands-on fluency with AI tools and the ability to help teams adopt them responsibly.

Responsibilities

  • Architect and evolve the Kubernetes platform, service mesh, networking, storage, and continuous integration and delivery pipelines; ship golden paths and infrastructure-as-code modules.
  • Define platform service-level objectives; use error budgets to guide reliability-versus-velocity trade-offs; drive incident learning and readiness reviews.
  • Improve developer velocity by reducing build and deployment times, flaky tests, and local development friction, with measurable results.
  • Lead capacity planning and commitments; build cost, security, and compliance guardrails with Security and FinOps partners.
  • Write high-impact code, automation, and tooling; mentor across teams and raise operational excellence.
  • Embed AI in the developer experience, from code generation to observability and incident response, to help teams ship faster and more safely by default.
  • Lead through design reviews, incident excellence, and service-level-objective and error-budget trade-offs communicated in business terms.

Desired Qualifications

  • Achieve service-level objectives of at least 99.95% for core services, build and deployment times 25–50% faster, and decreasing developer-reported friction.
  • Integrate approved AI tooling into IDE and continuous integration and delivery workflows with repository policies and auditability; reach at least 70% monthly active usage among eligible engineers; reduce mean time to resolution by 20–30% through AI-assisted triage; and decrease flaky-test rates through targeted AI-suggested fixes.
  • Codify cost, security, and compliance controls as infrastructure-as-code modules and enforce them through paved roads.
  • Experience with enterprise governance, including compliance and audit requirements.
  • Familiarity with GDPR and data privacy considerations in large-scale production environments.

About the Company

Klaviyo

Builds marketing software for consumer brands

Klaviyo builds customer relationship software for consumer brands, combining marketing, customer service, analytics, and a customer data platform in one system. Its platform draws on shoppers' purchases, browsing, and message activity to create customer profiles that brands use to personalize communications. Businesses use these profiles to automate email, text, WhatsApp, and mobile push campaigns, while AI agents create marketing work and answer customer questions. Klaviyo earns subscription fees based on active customer profiles, message volumes, and service activity, rather than charging for each employee who uses the software. Founded in 2012, the company is headquartered in Boston, Massachusetts.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Boston, MA
Founded
2012

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