Member of Technical Staff, Search Ranking
Own the multi-stage ranking pipeline for web-scale search, balancing precision, recall, latency, and compute cost across retrieval, first-pass ranking, and neural reranking.
Responsibilities
- Own the multi-stage ranking pipeline that narrows a web-scale set of candidates down to the handful of best passages for a query
- Spend the least compute necessary while maintaining quality
- Push precision and recall across fast candidate retrieval, lightweight first-pass ranking, and heavier neural reranking
- Decide how much compute each query deserves
- Grade everything on real usage outcomes rather than offline proxies
Requirements
- Deep intuition for relevance, feature engineering, and the trade-offs between quality, latency, and cost
- Think rigorously about how ranking, retrieval, and agent behavior inform one another
- Train models that serve ranking, retrieval, and agent behavior
- Care about research being applied to product and systems that millions use
Machine Learning Engineer - Simulation Framework
Machine Learning Engineer focused on GPU-based simulation frameworks, reinforcement learning, and bridging sim-to-real gaps for autonomous vehicle safety validation. Requires MS/PhD and strong C++/Python experience.
Senior AI Engineer
Build full-stack AI systems including agentic workflows, RAG pipelines, and production infrastructure for mental healthcare applications. Requires 2+ years software engineering experience and 1+ year with LLMs or agentic AI.
Staff AI Engineer
Staff AI Engineer building and shipping LLM/agent-powered observability features for incident detection, triage, and resolution. Requires strong production software engineering experience plus practical GenAI/LLM application skills.
Senior AI Engineer
Build and ship AI-powered observability features using LLMs and agent workflows to help users detect, triage, and resolve incidents. Requires strong production software engineering experience plus practical GenAI application skills.
Staff Software Engineer, Trends Machine Learning Infrastructure
Lead technical direction for Pinterest's unified AI-powered Trends and Audience Insights platform. Architect scalable ML data pipelines and LLM capabilities while mentoring engineers and driving cross-team integrations.