Senior Product Data Scientist

Klaviyo(7 days ago)

HybridFull TimeSenior$142,400 - $213,600Data Science

About this role

A Senior Data Scientist at Klaviyo who works at the intersection of data science and product development, combining statistical rigor with product intuition to inform strategic decisions. The role focuses on building complex models in R or Python, designing and validating causal inference frameworks, and communicating findings to product leaders and executives. This is a hybrid position requiring three days per week in the Boston office.

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Required Skills

Experimentation
Causal Inference
A/B Testing
Statistical Modeling
Python
R
SQL
DBT
Time Series
Mixed Effects

+5 more

Qualifications

Degree in Quantitative Field

About Klaviyo

klaviyo.com

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.