Lead ML Engineer, Ads Marketplace

Pinterest; Seattle (WA); Hybrid; USD 314,580 - 550,515; Full time

Job summary

Pinterest is seeking a senior backend engineer to lead the evolution of the Pinterest marketplace within the Ads Delivery team. You will design and implement systems that improve the ads delivery funnel, run experiments that shape the utility function, and contribute to auction design and ad allocation to derive new marketplace insights.

You’ll collaborate across the company to balance long- and short-term business objectives while strengthening cross-functional knowledge of marketplace design.

Qualifications

• 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.
• Hands-on experience with large-scale online e-commerce systems is a plus.
• Background in computational advertising is preferred.
• Experience using AI coding assistants for development, debugging, testing, and refactoring.

Responsibilities

• Build and improve backend systems and statistical models that underlay the marketplace to maximize value for Pinners, Partners and Pinterest.
• Define and implement experiments to understand long term Marketplace effects.
• 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.

Skills

Software engineering

Mathematical skills

Statistical methods

AI tooling

Education

Degree in Computer Science, Machine Learning, Statistics or related field

Tools

Cursor

Copilot

Codex

Job description

Pinterest is seeking a senior backend engineer to lead the evolution of the Pinterest marketplace within the Ads Delivery team. You will design and implement systems that improve the ads delivery funnel, run experiments that shape the utility function, and contribute to auction design and ad allocation to derive new marketplace insights.

You’ll collaborate across the company to balance long- and short-term business objectives while strengthening cross-functional knowledge of marketplace design.