What is Function Calling and how common is it in AI job postings?

Function Calling is a skill in the "Agents & Autonomy" category. It currently appears in 169 active AI roles across 61 companies in our index.

Which companies are hiring for Function Calling?

The top employers with active AI roles mentioning Function Calling are: Amazon (17), Google (14), JPMorgan Chase (9), Salesforce (6), Microsoft (6).

Is demand for Function Calling growing?

Over the last 12 weeks, 131 new AI postings mentioned Function Calling. Demand is rising — up 342% in the last four weeks compared to the earliest four weeks in the window.

At which stage of AI development is Function Calling used?

Roles requiring Function Calling are concentrated in: agents (82%), application (8%), serving infrastructure (6%). These stages follow a seven-stage AI lifecycle from data preparation through to shipped product.

What skills are commonly paired with Function Calling?

Job postings that mention Function Calling most often also require: Agentic Systems, Agent Orchestration, Python, Large Language Models (LLMs), Prompt Engineering.

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Function Calling

169 active AI roles across 61 companies mention Function Calling. Category: Agents & Autonomy.

Demand trend

New AI postings mentioning Function Calling per week — 131 total over 12 weeks.

Sector

All Enterprise · 41 Big Tech · 40 Vertical AI · 17 AI Frontier · 17 Data AI · 11 Banking · 11 Semiconductors · 6 Retail · 5 Defense · 5 Consumer · 5 Consulting · 4 Insurance · 2 Healthcare · 2 Fintech · 2 Media · 1 Auto · 1

Function

All Engineering · 160 Product · 6 Research · 4

Status

All Active only

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14 AI roles requiring this skill.

Company	Title	Sector	AI score	Stage
Anthropic	Staff+ Software Engineer, Inference Runtime	AI Frontier	9	L3
OpenAI	Software Engineer, RL Training Infra	AI Frontier	9	L2
Mistral AI	Model Behavior Architect- Function Calling	AI Frontier	9	L4
Harvey	Staff Software Engineer, Agents	AI Frontier	9	L4
Harvey	Staff Software Engineer, Agents	AI Frontier	9	L4
Harvey	Software Engineer, Agents	AI Frontier	9	L4
Mistral AI	AI Engineer, Product	AI Frontier	9	L4
Harvey	Senior Software Engineer, Agents	AI Frontier	9	L4
Harvey	Senior Software Engineer, Agents	AI Frontier	9	L4
Lila Sciences	Senior / Engineer II, AI Lab Research Engineer	AI Frontier	9	L4
Mistral AI	Applied AI, Use-case, Software Engineer (Harness)	AI Frontier	8	L4
Harvey	Software Engineer, Agents	AI Frontier	8	L4
Anthropic	Senior Software Engineer, Inference	AI Frontier	8	L3
OpenAI	Software Engineer, Enterprise AI Platform	AI Frontier	7	L4

Frequently asked questions

What is Function Calling and how common is it in AI job postings?
Function Calling is a skill in the "Agents & Autonomy" category. It currently appears in 169 active AI roles across 61 companies in our index.
Which companies are hiring for Function Calling?
The top employers with active AI roles mentioning Function Calling are: Amazon (17), Google (14), JPMorgan Chase (9), Salesforce (6), Microsoft (6).
Is demand for Function Calling growing?
Over the last 12 weeks, 131 new AI postings mentioned Function Calling. Demand is rising — up 342% in the last four weeks compared to the earliest four weeks in the window.
At which stage of AI development is Function Calling used?
Roles requiring Function Calling are concentrated in: agents (82%), application (8%), serving infrastructure (6%). These stages follow a seven-stage AI lifecycle from data preparation through to shipped product.
What skills are commonly paired with Function Calling?
Job postings that mention Function Calling most often also require: Agentic Systems, Agent Orchestration, Python, Large Language Models (LLMs), Prompt Engineering.

Function Calling

Top employers

Often paired with

Demand trend

Frequently asked questions

Function Calling

Top employers

Often paired with

Demand trend

Frequently asked questions