AI
Sr.StaffMachineLearningEngineer,ContentEcosystem
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“Sr. Staff Machine Learning Engineer, Content Ecosystem at Pinterest. Skills: Machine Learning, Optimization, Marketplace dynamics, Technical strategy. Set ML strategy and vision. Develop content ecosystem measurement framework”
What You'll Achieve.
improve overall ecosystem health; balance relevance, quality, diversity, integrity, and monetization; strengthen the ecosystem tomorrow; maximize long-term ecosystem value; deliver measurable impact
Industry & Context.
rigorous ML thinking; problems are inherently multi-objective and long-horizon; uncovering the attributes that make content succeed; designing optimization approaches that balance relevance, quality, diversity, integrity, and monetization; identify and close content gaps; Deeply understand what content works and why by combining causal thinking, experimentation, and model interpretability
In-Office Requirement Statement: This role will need to be in the office for in-person collaboration 1-2 times every 6 months, US based applicants only
What They're Looking For.
Must Have
fundamentals in machine learning and optimization, ability to apply them to real-world, high-scale ecosystem problems, Demonstrated ability to lead technical strategy, navigate ambiguity, deliver end-to-end impact, Deep interest in marketplace dynamics, comfort with multi-objective tradeoffs, Experience with Cursor, Copilot, Codex, or similar AI coding assistants, Familiarity with LLM-powered productivity tools
Nice to Have
background in game theory, reinforcement learning, mechanism design, causal inference applied to ecosystems/marketplaces
What You'll Do.
Set ML strategy and vision
Develop content ecosystem measurement framework
Quantify content health and performance
Identify and close content gaps
Build models and insights
Understand content success factors
Build and optimize content marketplace mechanisms
Design multi-objective optimization approaches
Translate ecosystem problems into roadmaps
Deliver measurable impact
Mentor junior ML engineers
Raise ML engineering quality bar
Establish best practices
Communicate technical proposals
Explore and apply advanced methods
How You'll Work.
Team & Collaboration
Partner with DS teams; Partner closely with cross-functional teams (Product, Data Science, UX Research, Content/Creator teams, Trust & Safety, Ads, Infra); Align stakeholders on tradeoffs; Drive decisions across org boundaries
Communication Scope
Communicate clearly; Influence broadly; Producing crisp technical proposals; Aligning stakeholders on tradeoffs; Driving decisions
Process & Methodology
Translate ambiguous ecosystem problems into clear technical roadmaps
Full Job Description
About Pinterest: 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. Pinterest works when the content ecosystem works: when people can reliably find ideas that feel inspiring, trustworthy, and actionable—and when the ecosystem continuously learns what to create, surface, and sustain next. In this Sr. Staff ML Engineer role, you’ll be the technical lead shaping how Pinterest understands and improves its content as a living marketplace: a dynamic system with feedback loops between users, creators/publishers, distribution, and long-term business outcomes. You will define a durable ML strategy that goes beyond “engagement metrics” to improve overall ecosystem health—identifying where we’re underserving content, uncovering the attributes that make content succeed, and designing optimization approaches that balance relevance, quality, diversity, integrity, and monetization. The problems are inherently multi-objective and long
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