tool/function calling jobs in 2026 — demand, top roles hiring, and related skills
As of 2026-09-15, tool/function calling appears in 187 job postings indexed by Skillenai over the past 90 days — most often required for Software Engineer roles, with demand down 24% vs the prior 4 weeks.
Last updated · 90d ending 2026-09-15
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Frequently asked questions about tool/function calling
+Is tool/function calling in demand in 2026?
Yes. tool/function calling appears in 187 job postings indexed by Skillenai over the 90 days ending 2026-09-15, with demand down 24% vs the prior 4 weeks. It is most often required for Software Engineer roles (17% of Software Engineer postings list it).
+What jobs require tool/function calling?
According to the Skillenai jobs index over the 90 days ending 2026-09-15, the job titles most likely to require tool/function calling are Software Engineer (17% of postings list tool/function calling), AI Engineer (14% of postings list tool/function calling), Data Scientist (4% of postings list tool/function calling).
+What skills are commonly paired with tool/function calling?
Across job postings indexed by Skillenai (90 days ending 2026-09-15), tool/function calling most often appears alongside Python, prompt engineering, RAG, observability, LangChain.
+Where is tool/function calling most in demand?
As of 2026-09-15, the metro areas posting the most jobs requiring tool/function calling are New York City, Toronto, Bengaluru, London, Palo Alto, according to the Skillenai jobs index.
+How can I keep up with new tool/function calling content and jobs?
Skillenai indexes news, blog posts, and research papers mentioning tool/function calling alongside the jobs index. You can subscribe to a daily email digest of new tool/function calling content from your Skillenai account.
Weekly job postings requiring tool/function calling — last 90 days
Job titles most likely to require tool/function calling
| Role | Postings mentioning | % requiring |
|---|---|---|
| Software Engineer | 31 | 16.6% |
| AI Engineer | 27 | 14.4% |
| Data Scientist | 8 | 4.3% |
| AI & Data Science Director | 4 | 2.1% |
| AI Engineering Director | 4 | 2.1% |
| Data Engineer | 4 | 2.1% |
| Forward Deployed Engineer | 4 | 2.1% |
| Technical Product Owner | 4 | 2.1% |
| AI Operations Engineer | 3 | 1.6% |
| AI Solutions Architect | 3 | 1.6% |
Top metros hiring for tool/function calling
| Name | Postings | Share |
|---|---|---|
| New York City | 11 | 5.9% |
| Toronto | 11 | 5.9% |
| Bengaluru | 4 | 2.1% |
| London | 4 | 2.1% |
| Palo Alto | 4 | 2.1% |
| Atlanta | 3 | 1.6% |
| Chicago | 3 | 1.6% |
| Hyderabad | 3 | 1.6% |
| Mountain View | 3 | 1.6% |
Skills commonly paired with tool/function calling
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How this was computed
Counts derive from the Skillenai jobs index over the 90 days ending 2026-09-15. Skills are resolved against the Skillenai canonical taxonomy, so the same entity is counted whether a posting writes 'Python', 'Python 3', or 'python'. Pages refresh weekly (or daily for the top-50 most-requested skills).
- source
- Skillenai jobs index, deduplicated daily
- entity_id
- 66da77518f3ceeb2
- data_as_of
- 2026-09-15
- window_days
- 90
The demand, skills, and geo numbers on this page come from the same Skillenai labor market index that powers our API. Use it for compensation benchmarking, hiring-competition analysis, and skill-adoption tracking.
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