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Principal Engineer, Data Infrastructure at Klaviyo - ApplyBlast

Principal Engineer, Data Infrastructure

Klaviyo

3 months ago

3.3 on Glassdoor

Boston, MA

Hybrid

Full Time

Senior

0 applicants

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About this role

Own the technical direction and delivery for Klaviyo's massive data platform, which processes billions of events daily to support autonomous, agent-driven experiences. This individual contributor role involves designing scalable systems for streaming, batch compute, storage, and governance while establishing SLOs and collaborating with product and analytics teams to accelerate value delivery. The position requires leading through architecture and influence to build reliable, cost-efficient infrastructure that handles ever-growing data volumes and new consumption patterns.

Responsibilities

Design and implement core data platform capabilities for event ingestion and stream processing
Establish and uphold SLOs for data freshness, availability, and correctness
Mentor staff and senior engineers through example without direct line management
Profile tune and right-size systems for optimal performance and cost efficiency
Partner with product teams to expose abstractions that unblock customer value

Skills

Qualifications

10+ years of experience building distributed data systemsExperience with stream processing and data lakehouse patternsProficiency in SQL and pipeline orchestration toolsKnowledge of regulatory compliance in data handlingExperience with AI and ML integration in data platforms

About Klaviyo

klaviyo.com

Headquarters

Boston, Massachusetts, United States

Company Size

1001-5000 employees

Founded

2012

View Profile

Klaviyo is a B2C CRM and marketing automation platform that unifies AI-powered email and SMS to help ecommerce brands drive growth and retention. It uses customer data, advanced segmentation, and automation flows to deliver personalized, omnichannel experiences across email, SMS, WhatsApp, and more — including AI-driven capabilities via K:AI Agents. Klaviyo emphasizes measurable results with analytics, testing, and integrations with major ecommerce platforms to boost revenue and lifetime value. Companies use it to build targeted lifecycle campaigns, personalized messaging, and data-driven retention strategies at scale.