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About the Role
We are seeking a Principal Engineer to define the technical vision and lead foundational work across Homefeed, Search, and AI Assistant experiences. This role is crucial for shaping how millions of Pinners discover and engage with inspiration daily, operating at the intersection of relevance, ranking, retrieval, and generative AI.
Responsibilities
- Define the long-term technical strategy and architecture for Homefeed, Search, and AI Assistant, including retrieval, ranking, personalization, and generative experiences.
- Drive a multi-year roadmap for unifying signals, features, and models across surfaces to deliver a coherent, high-quality discovery experience.
- Lead the design and adoption of large-scale retrieval and ranking systems that materially improve relevance and monetization.
- Architect how LLMs and foundation models integrate with our core discovery stack.
- Set technical direction for experimentation, measurement, and evaluation frameworks.
- Provide hands-on technical leadership on high-leverage projects, including design, reviews, and mentoring.
- Partner deeply with Product, Data Science, Research, and Design to frame problems and translate product bets into technical plans.
- Raise the bar for engineering excellence in reliability, performance, security, privacy, cost efficiency, and operational health of ML systems.
- Represent Pinterest externally for these domains and help attract and grow top talent.
Requirements
- 15+ years of industry experience in large-scale systems and/or machine learning, with a track record of impact in search, recommendations, feeds, or conversational AI.
- Proven experience as a Principal Engineer, Architect, or equivalent senior technical leader driving cross-org technical strategy and execution.
- Deep expertise in at least two of the following, and strong familiarity with the others: Large-scale retrieval and ranking, Representation learning, Search systems, Large language models and generative AI.
- Demonstrated ability to define and drive multi-year architectural transformations at scale.
- Strong product intuition and experience partnering with PM/Design/Data Science on ambiguous product bets.
- Exceptional communication skills: able to crisply articulate strategy, tradeoffs, and technical direction to executives, peers, and broad engineering audiences.
- Passion for mentoring and growing senior/staff engineers; history of building strong engineering cultures and communities of practice.
- Bachelor’s degree in computer science, a related field or equivalent experience.
- Prior experience in consumer discovery products at global scale is a plus.
- Experience building or integrating AI assistants or agentic workflows into consumer experiences is a plus.
- US based applicants only.
Skills
- Large-scale retrieval and ranking
- Representation learning
- Search systems
- Large language models and generative AI
- Machine learning
- Systems design
- Product intuition
- Mentoring
- Communication
Location
- Remote (US-based)
- Commutable distance from SF, Palo Alto, Seattle (for some teams)
Work Type
- Remote
- Hybrid (for some teams requiring 1-2 days/quarter in office)
- Hybrid (for some teams requiring 1 day/week in office)
Experience Level
- Principal Engineer
- Senior Technical Leader
- 15+ years of industry experience
Education Level
- Bachelor’s degree in computer science, a related field or equivalent experience.
Salary/Compensations
- $242,634—$449,541 USD
Benefits
- Equity
- Information regarding benefits available for this position can be found here.
About the Company
- 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.
- At Pinterest, AI isn't just a feature, it's a powerful partner that augments our creativity and amplifies our impact.
- 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.
Equal Opportunity
- Pinterest is an equal opportunity employer and makes employment decisions on the basis of merit.
- All qualified applicants will receive consideration for employment without regard to race, color, ancestry, national origin, religion or religious creed, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender, gender identity, gender expression, age, marital status, status as a protected veteran, physical or mental disability, medical condition, genetic information or characteristics (or those of a family member) or any other consideration made unlawful by applicable federal, state or local laws.
- We also consider qualified applicants regardless of criminal histories, consistent with legal requirements.
- If you require a medical or religious accommodation during the job application process, please complete this form for support.