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Perplexity builds answer engines combining search, retrieval, and frontier LLMs.LLM Engineer (San Francisco): retrieval quality, citation accuracy, and latency at query scale.What you will doDeliver production-grade search-augmented LLMs with measurable quality, latency, and cost targets.Build…

Perks · Frontier search product, equity.

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Weights & Biases (W&B) provides experiment tracking and MLOps for ML teams worldwide.Senior ML Platform Engineer: model registry integrations, eval products, and scalable metadata services.What you will doDeliver production-grade MLOps product engineering with measurable quality, latency,…

Perks · Remote-friendly, equity.

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Harvey builds LLM copilots for law firms with strict confidentiality and citation requirements.LLM Engineer (San Francisco): legal RAG, prompt systems, and human-in-the-loop review tooling.What you will doDeliver production-grade legal-domain LLM products with measurable quality, latency, and cost…

Perks · Top-tier comp, equity.

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OpenAI builds frontier models and developer APIs used worldwide. Infrastructure ML teams keep training and inference reliable at scale.ML Engineer — infrastructure (San Francisco): scheduling, monitoring, and performance for large GPU clusters and inference fleets.What you will doShip production…

Perks · Frontier lab environment, comprehensive benefits.

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Notion embeds AI across docs, wikis, and workflows for teams globally. SF product engineering ships fast with strong craft and safety review.Senior AI Product Engineer: in-editor assistants, tool routing, and enterprise privacy controls.What you will doShip production product-embedded AI with clear…

Perks · Equity, wellness, hybrid SF.

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Airbnb connects hosts and guests worldwide. Search, pricing, and trust models blend classical ML with modern embeddings and GenAI assists.Senior Applied Scientist (SF): ranking, retrieval, and experimentation for discovery with integrity guardrails.What you will doShip production search and…

Perks · Travel credit, equity, hybrid.

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Stripe powers internet commerce with ML on fraud, authorization, and support. Models must be fast, explainable, and globally fair.ML Engineer — payments risk (SF): real-time features, graph signals, and LLM-assisted analyst workflows.What you will doShip production payments ML with clear…

Perks · Equity, parental leave, hybrid.

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Databricks unifies data and AI on the lakehouse. GenAI features span retrieval, fine-tuning, and governed serving for enterprise customers.Senior ML Engineer — GenAI (San Francisco): RAG templates, vector search integration, and performance at lakehouse scale.What you will doShip production…

Perks · Equity refresh, wellness, hybrid.

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Scale AI provides data and evaluation infrastructure for the world's leading AI labs and enterprises—RLHF, preference data, and agent benchmarks.Senior ML Engineer (SF / hybrid): quality models for data labeling, automated evaluators, and customer delivery tooling.What you will doShip production…

Perks · Equity, lunch, hybrid flexibility.

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Anthropic researches AI safety and builds Claude—frontier language models deployed to enterprises with strong harmlessness and honesty goals.Research Engineer (San Francisco): RLHF pipelines, evals, red-teaming automation, and scalable training infrastructure partners.What you will doShip…

Perks · Top-tier medical, equity, research time.

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Pacific Context AI is hiring a Staff Staff Software Engineer — LLM platform & APIs on the Core platform team (Hybrid · San Francisco, United States). This is a hands-on role in LLM & generative AI—not a generic “AI enthusiast” post.You will own LLM features, retrieval, agents, and…

Perks · Health, 401k match, meals.

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