Principal Machine Learning Engineer, Ads Delivery

Pinterest Pinterest · Consumer · Palo Alto, CA · Monetization

This role focuses on building and improving backend systems and statistical models for Pinterest's ads delivery marketplace, aiming to maximize value for users, partners, and the company. It involves defining and implementing experiments, developing strategies for business objectives, and driving cross-functional collaboration. The role is primarily focused on shipping AI-powered products within the consumer domain.

What you'd actually do

  1. Build and improve backend systems and statistical models that underlay the marketplace to maximize value for Pinners, Partners and Pinterest.
  2. Define and implement experiments to understand long term Marketplace effects.
  3. Develop strategies to balance long and short term business objectives.
  4. Drive multi-functional collaboration with peers and partners across the company to improve knowledge of marketplace design and operations.

Skills

Required

  • Degree in Computer Science, Machine Learning, Statistics or related field
  • 10+ years of professional experience as a hands-on engineer and technical leader leading multiple projects
  • Strong software engineering and mathematical skills with knowledge of statistical methods

Nice to have

  • Hands-on experience with large-scale online e-commerce systems
  • Background in computational advertising
  • Experience using Cursor, Copilot, Codex, or similar AI coding assistants for development, debugging, testing, and refactoring
  • Familiarity with LLM-powered productivity tools for documentation search, experiment analysis, SQL/data exploration, and engineering workflow acceleration

What the JD emphasized

  • 10+ years of professional experience as a hands-on engineer and technical leader leading multiple projects

Other signals

  • Develop strategies to balance long and short term business objectives
  • Drive multi-functional collaboration with peers and partners across the company to improve knowledge of marketplace design and operations
  • Build and improve backend systems and statistical models that underlay the marketplace to maximize value for Pinners, Partners and Pinterest