Senior ML Engineer - Personalization & Ads at Scale

Pinterest, Inc.; San Francisco (CA); Hybrid; USD 190,000 - 332,000; Full time

Job summary

Pinterest, Inc. is hiring for a Monetization ML Engineer to design and implement ML solutions that power Ads and recommendations across Pinterest.

The role involves building state-of-the-art ML systems, collaborating with cross-functional teams, and advancing the machine learning stack to deliver personalized experiences for users. A strong foundation in ML and scalable data tooling is essential.

Qualifications

• 2+ years of industry experience applying ML methods (e.g., user modeling, personalization, recommender systems, search, ranking, NLP, RL, graph representation learning)
• Degree in computer science, statistics, or related field; or equivalent experience
• End-to-end hands-on experience with building data processing pipelines, large scale ML systems, and big data technologies (e.g., Hadoop/Spark)
• Practical knowledge of large scale recommender systems, or modern ads ranking, retrieval, targeting, marketplace systems
• Nice to have: MS/PhD in ML or related areas; publications at top ML conferences; experience with AI coding assistants (Cursor, Copilot, Codex); familiarity with LLM-powered productivity tools; scalable realtime systems; passion for applied ML and Pinterest product; background in computational advertising

Responsibilities

• Build cutting edge technology using the latest advances in deep learning and machine learning to personalize Pinterest
• Partner closely with teams across Pinterest to experiment and improve ML models for various product surfaces
• Use data driven methods and leverage the unique properties of our data to improve candidates retrieval
• Work in a high-impact environment with quick experimentation and product launches
• Keep up with industry trends in recommendation systems
• Leverage LLMs to enhance content understanding

Skills

Machine learning

Recommender systems

NLP

Data modeling

Experimentation

Education

BS in CS or related field

MS/PhD in ML (nice to have)

Tools

Hadoop

Spark

Cursor

Copilot/Codex

SQL

LLM tools

Job description

Pinterest, Inc. is hiring for a Monetization ML Engineer to design and implement ML solutions that power Ads and recommendations across Pinterest.

The role involves building state-of-the-art ML systems, collaborating with cross-functional teams, and advancing the machine learning stack to deliver personalized experiences for users. A strong foundation in ML and scalable data tooling is essential.