Principal Engineer, AI Platform
Pinterest · San Francisco, CA, US; Remote · Remote-friendly
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- Company
- Location
- San Francisco, CA, US; Remote
- Salary
- $242,634 — $499,541
- Posted
- September 22, 2026
About this job
As a Principal Engineer on the AI Platform team, you'll help architect the infrastructure that powers both Generative AI and Recommender Systems across Pinterest's entire product suite. Our team builds the end-to-end engines for petabyte-scale data orchestration, model training and fine-tuning, and high-performance inference, ensuring our models scale seamlessly to hundreds of millions of inferences per second in service of over 600 million monthly active users. What you’ll do: Set the technical vision and roadmap for the Pinterest AI Platform, aligning with business priorities and long-term company strategy. Drive cross-functional strategic initiatives that advance our platform capabilities across: Generative AI: multimodal data management, post-training, evaluation, and batch/online…
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