AI systems that invoke external APIs, search engines, or code interpreters during inference, extending capabilities beyond raw LLM generation. The foundational capability behind most agentic products.
Primary AI lifecycle stage: agents.
As of today, 1,275 active AI roles across 189 companies in our index reference Tool use. Hiring concentrates at the agents (94%) and post-training (2%) stages. Most common sectors: Enterprise, Big Tech, Data AI. New postings fell 20% in the last 30 days versus the prior 30 (695 → 554).
AI systems that invoke external APIs, search engines, or code interpreters during inference, extending capabilities beyond raw LLM generation. The foundational capability behind most agentic products. Primary AI lifecycle stage: agents.
1,275 active AI roles across 189 companies in our index reference Tool use as of today. New postings fell 20% in the last 30 days versus the prior 30 (695 → 554).
The companies with the most active Tool use listings are: JPMorgan Chase (73 roles), Salesforce (59 roles), Amazon (57 roles), Google (52 roles), Adobe (46 roles).
Tool use primarily belongs to the agents stage of the AI lifecycle. In current hiring, Tool use roles concentrate at: agents (94%), post-training (2%).
The sectors with the most active Tool use hiring are: Enterprise, Big Tech, Data AI.
94 AI roles tagged tool_use.
| Company | Title | Sector | AI score | Other tags |
|---|---|---|---|---|
| Airbnb | Senior Machine Learning Engineer, Customer Support Engineering | Consumer | 9 | Agent orchestration · Evals · Guardrails · RAG · Fine-tuning · Model serving · RLHF · Agent research |
| Senior Machine Learning Engineer, GenAI Security | Consumer | 9 | Agent orchestration · Evals · Guardrails · Fine-tuning · Model serving | |
| DoorDash | AI Research Fellowship, (Summer and Fall 2026) | Consumer | 9 | Agent orchestration · Evals · Forecasting · Multimodal · Vision · Audio & speech · Frontier research · Synthetic data |
| Master's Fall Machine Learning Internship (ATG - Visual Search) | Consumer | 9 | Agent orchestration · Model serving · Inference infra · Multimodal · LLM observability | |
| Airbnb | Machine Learning Engineer, Customer Support Engineering | Consumer | 9 | Agent orchestration · Evals · Guardrails · RAG · Fine-tuning · Model serving · RL post-training · Agent research |
| Principal Engineer, Agentic Engineering | Consumer | 9 | Agent orchestration · Agent research · Evals · Guardrails · LLM observability | |
| Zillow | Senior Applied Scientist, Agentic AI | Consumer | 9 | Agent orchestration · Evals · Fine-tuning · LLM observability · Agent research |
| Uber | Sr Staff Agentic Systems Engineer | Consumer | 9 | Agent orchestration · Agent research · LLM observability · Model serving |
| Uber | Senior Applied Scientist – AI Red Teaming & Model Risk | Consumer | 9 | Evals · Guardrails · Agent orchestration · LLM observability · Agent research |
| Uber | Staff ML Engineer, Generative AI | Consumer | 9 | Agent orchestration · Evals · Guardrails · LLM observability · RAG · Fine-tuning · Model serving · Multimodal · Audio & speech |
| Zillow | AI Applied Scientist - PhD Intern, Next-Gen Agentic and Multi-Modal Home Exploration Experience | Consumer | 9 | Agent orchestration · Agent research · Multimodal · Vision · LLM observability · Fine-tuning |
| Airbnb | Senior Staff Machine Learning Engineer, Data & Eval | Consumer | 9 | Evals · LLM observability · Guardrails · RAG · Agent orchestration · Fine-tuning · Synthetic data |
| Zillow | Principal Product Technologist | Consumer | 8 | Agent orchestration · RAG · LLM observability |
| DoorDash | Software Engineer, Machine Learning Infrastructure - Gen AI | Consumer | 8 | Agent orchestration · Evals · Guardrails · LLM observability · RAG · Vector DB · Fine-tuning · Inference infra · Model serving |
| Chegg | Senior Software Engineer - Agentic AI Applications | Consumer | 8 | Agent orchestration · Evals · Guardrails · LLM observability · RAG · Vector DB · Fine-tuning · Model serving · Multimodal |
| Oura | AI Fullstack Engineer, Health Intelligence | Consumer | 8 | Agent orchestration · Evals · LLM observability · RAG · Fine-tuning · Model serving |
| Chegg | Machine Learning/ AI Engineer | Consumer | 8 | Agent orchestration · RAG · LLM observability · Model serving · Inference infra · Recommender systems |
| Whatnot | AI Tooling Engineer | Consumer | 8 | Agent orchestration · RAG · Evals · LLM observability |
| Oura | Senior AI Engineer – Health Intelligence | Consumer | 8 | Agent orchestration · Evals · Guardrails · LLM observability · RAG · Vector DB · Fine-tuning · Model serving · Recommender systems · Multimodal · Agent research |
| Spotify | Senior Machine Learning Engineer, Zeitgeist, Personalization | Consumer | 8 | Agent orchestration · RAG · Vector DB · LLM observability · Recommender systems |
| Zillow | Principal Machine Learning Engineer | Consumer | 8 | Agent orchestration · Evals · RAG · Vector DB · Model serving · Inference infra |
| Superhuman | Engineering Manager, Coda AI | Consumer | 8 | Agent orchestration · Evals · LLM observability |
| Spotify | Senior Machine Learning Engineer, Personalization, Magenta | Consumer | 8 | Agent orchestration · Evals · LLM observability · Model serving |
| Uber | Lead, Applied AI | Consumer | 8 | Agent orchestration · RAG · Vector DB · LLM observability · Evals · Guardrails |
| Spotify | Senior Machine Learning Engineer, Personalization, Magenta | Consumer | 8 | Agent orchestration · Evals · LLM observability |
| Senior Staff Machine Learning Engineer, GenAI Platform | Consumer | 8 | Agent orchestration · RAG · LLM observability · Model serving · Inference infra | |
| Senior Software Engineer, GenAI Platform | Consumer | 8 | Agent orchestration · RAG · Vector DB · LLM observability · Model serving · Inference infra | |
| Instacart | Senior Staff Machine Learning Engineer, Search & Discovery | Consumer | 8 | Recommender systems · Search & ranking · Agent orchestration · RAG · Fine-tuning · Model serving |
| Zillow | Machine Learning Engineer, Agentic AI | Consumer | 8 | Agent orchestration · Agent research · RAG · Model serving · LLM observability |
| Uber | Sr. Staff Engineer (Conversational/Voice AI) | Consumer | 8 | Agent orchestration · Evals · Guardrails · LLM observability · RAG · Audio & speech · Model serving · Multimodal |