Distinguished Engineer

Pinterest Pinterest · Consumer · Palo Alto, CA · Core Engineering

Distinguished Engineer to set technical vision and lead foundational work across Homefeed, Search, and emerging AI Assistant experiences at Pinterest. Role sits at the intersection of relevance, ranking, retrieval, and generative AI, shaping discovery for millions of users. Responsibilities include defining long-term architecture, driving ML/systems excellence, and partnering with product leadership to improve engagement and quality. Focus on hands-on technical leadership, system design, and mentoring senior engineers.

What you'd actually do

  1. Define the long-term technical strategy and architecture for Homefeed, Search, and AI Assistant, including retrieval, ranking, personalization, and generative experiences.
  2. Drive a multi‑year roadmap for unifying signals, features, and models across surfaces to deliver a coherent, high-quality discovery experience.
  3. Lead the design and adoption of large-scale retrieval and ranking systems (e.g., multi-stage retrieval, representation learning, multi-objective optimization) that materially improve relevance and monetization.
  4. Architect how LLMs and foundation models integrate with our core discovery stack (e.g., query understanding, intent modeling, content understanding, conversation orchestration, safety/guardrails).
  5. Set technical direction for experimentation, measurement, and evaluation frameworks, including offline metrics, online experimentation, and causal inference for discovery and generative use cases.

Skills

Required

  • large-scale systems
  • machine learning
  • search
  • recommendations
  • feeds
  • conversational AI
  • technical strategy
  • architecture
  • ML systems excellence
  • retrieval
  • ranking
  • personalization
  • generative AI
  • LLMs
  • foundation models
  • query understanding
  • intent modeling
  • content understanding
  • conversation orchestration
  • safety/guardrails
  • experimentation
  • measurement
  • evaluation frameworks
  • offline metrics
  • online experimentation
  • causal inference
  • hands-on technical leadership
  • design
  • reviews
  • prototyping
  • mentoring senior engineers
  • staff+ TLs
  • Product partnership
  • Data Science partnership
  • Research partnership
  • Design partnership
  • reliability
  • performance
  • security/privacy
  • cost efficiency
  • operational health
  • large-scale ML systems
  • external representation (talks, publications, partnerships)
  • talent attraction and growth

Nice to have

  • building or integrating AI assistants
  • agentic workflows into consumer experiences

What the JD emphasized

  • 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 Distinguished 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:
  • Demonstrated ability to define and drive multi-year architectural transformations at scale (e.g., re-architecting a core ranking stack, unifying feature platforms, evolving legacy systems to modern ML platforms).

Other signals

  • AI Assistant experiences
  • generative AI
  • LLMs and foundation models
  • discovery and generative use cases