Drimva

Klaviyo

Lead Product Data Scientist, Agents

$172K–$258K

Boston, MA +1 · Full-time · Posted Oct 30, 2026

Location
Boston, MA
Boston, Massachusetts, United States
Experience
10+ years; recent hands-on experience measuring AI, machine learning, or LLM-powered products in production.
Education
Degree in Statistics, Mathematics, Computer Science, Economics, Finance, Engineering, or another quantitative discipline, or an MBA with a quantitative emphasis; equivalent hands-on experience in applied data science is equally valued.

About the job

Leads measurement and data science strategy for Klaviyo’s Composer and Customer Agent products, evaluating agent performance, customer value, and business impact to guide product and pricing decisions.

What you'll do

  • Develop agent measurement and evaluation frameworks covering quality, customer outcomes, costs, and revenue impact.
  • Use experimentation and causal inference to assess agents’ effects on customer behavior, retention, and revenue.
  • Set technical direction for agent analytics, mentor data scientists, and influence product and executive decisions.

What they ask for

  • 10+ years in data science, product analytics, applied statistics, or a related quantitative discipline, including recent hands-on experience measuring AI, machine learning, or LLM-powered products in production.
  • Deep expertise in product measurement, experimentation, statistical modeling, and causal inference.
  • Experience evaluating AI systems in production, including evaluation frameworks and human-labeling or LLM-as-judge methods.
  • Proficiency in SQL and Python or R; experience developing production-quality analytical solutions and familiarity with dbt.

Nice to have

  • Experience with agent observability and evaluation platforms such as Braintrust, LangSmith, or Arize.
  • Experience with usage-based pricing, credit models, AI infrastructure costs, or LLM unit economics.

Pay

$172,000 — $258,000 USD base salary

Tools

SQL, Python, R, dbt, Braintrust, LangSmith, Arize

AI focus

Measure and evaluate AI agents, including their quality, task completion, customer outcomes, costs, and business impact; use coding agents and LLMs to accelerate analytics.

Model-written summary · the original posting is authoritative

First seen Oct 30, 2026 · Last verified Nov 4, 2026 (UTC)