Machine Learning Engineer

Millions of people around the world come to our platform to find creative ideas, dream about new possibilities and plan for memories that will last a lifetime. At Pinterest, we’re on a mission to bring everyone the inspiration to create a life they love, and that starts with the people behind the product.

Discover a career where you ignite innovation for millions, transform passion into growth opportunities, celebrate each other’s unique experiences and embrace the flexibility to do your best work. Creating a career you love? It’s Possible.

At Pinterest, AI isn't just a feature, it's a powerful partner that augments our creativity and amplifies our impact, and we’re looking for candidates who are excited to be a part of that. To get a complete picture of your experience and abilities, we’ll explore your foundational skills and how you collaborate with AI.

Through our interview process, what matters most is that you can always explain your approach, showing us not just what you know, but how you think. You can read more about our AI interview philosophy and how we use AI in our recruiting process here.

Millions of people across the world come to Pinterest to find new ideas every day. It’s where they get inspiration, dream about new possibilities and plan for what matters most. Our mission is to help those people find their inspiration and create a life they love. As a Pinterest employee, you’ll be challenged to take on work that upholds this mission and pushes Pinterest forward.

You’ll grow as a person and leader in your field, all the while helping users make their lives better in the positive corner of the internet.

Our new progressive work model is called Pin Flex, a term that’s uniquely Pinterest to describe our flexible approach to living and working. Visit our Pin Flex landing page to learn more.

As part of Pinterest Labs, you’ll work on tackling new challenges in machine learning and artificial intelligence along with a world-class team of research scientists and machine learning engineers. In this role, you will play a central part in transforming how content is discovered on Pinterest by driving the research, architecture, scale and production deployment of Generative Recommendation System (Gen Rec) and Reinforcement Learning solutions.

You will conduct research that directly applies across Pinterest engineering teams, engage in external collaborations and mentoring, and perform research in the intersection of recommendation systems, LLMs, VLMs, and reinforcement learning.

• Contribute to cutting-edge AI/ML research that can be applied to Pinterest challenges across Ads, Discovery, Growth, and Search.
• Identify, scope, architect, build, and deliver full, novel ML solutions from 0 to 1 ntify timelines and obtain resources needed.
• Identify new and upcoming research opportunities by interacting with external and internal collaborators. Own long-term research strategy and plans to expand the impact of Applied Science.
• Partner with Product, Engineering, and Data Science to translate complex engineering solutions into product impact.

• MS/PhD in Computer Science, or equivalent industry experience
• Minimum 6 years of relevant industry experience
• Hands‑on experience with large-scale recommendation system and reinforcement learning applications; experience with LLM/VLM post‑training is a plus
• Technical leadership and experience in driving ambiguous research problems into production deliverables
• Publications at top ML conferences (e.g. KDD, NeurIPS, Rec Sys, etc.)
• Cross‑functional collaborator and strong communicator

• We recognize that the ideal environment…