tool/function calling jobs in 2026 — demand, top roles hiring, and related skills
As of 2026-10-31, tool/function calling appears in 216 job postings indexed by Skillenai over the past 90 days — AI Engineer has the most postings mentioning tool/function calling, with demand share up 11.5% vs the prior 4 weeks.
Last updated · 90d ending 2026-10-31
Which roles want tool/function calling?
Upload your resume and Skillenai will show which roles your tool/function calling experience fits, which skills you already cover, and what is missing.
Frequently asked questions about tool/function calling
+Is tool/function calling in demand in 2026?
Yes. tool/function calling appears in 216 job postings indexed by Skillenai over the 90 days ending 2026-10-31. AI Engineer accounts for the most postings mentioning tool/function calling (17.1% of all postings mentioning tool/function calling).
+What jobs require tool/function calling?
According to the Skillenai jobs index over the 90 days ending 2026-10-31, among roles with at least 20 postings, the highest shares mentioning tool/function calling are AI Operations Engineer (22.2% of that role’s postings mention tool/function calling), Research Fellow (5.0% of that role’s postings mention tool/function calling), SRE Engineer (4.0% of that role’s postings mention tool/function calling).
+What skills are commonly paired with tool/function calling?
Across job postings indexed by Skillenai (90 days ending 2026-10-31), tool/function calling most often appears alongside Python, prompt engineering, RAG, LangGraph, CI/CD.
+Where is tool/function calling most in demand?
As of 2026-10-31, the metro areas posting the most jobs requiring tool/function calling are San Jose, New York City, Bengaluru, San Francisco, Hyderabad, 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.
+Which skills come before and after tool/function calling?
The skill-flow chart shows skills documented in adjacent positions across observed employer changes. An outgoing skill is documented in the following position but not the preceding one. These are ideas to explore, not proven prerequisites, acquisition dates, or levels of mastery. Each ribbon counts employer moves with that skill pair; one move can contribute several pairs.
Weekly indexed postings requiring tool/function calling — last 90 days
Career paths around tool/function calling
Skills documented before and after this skill across employer changes.
Not enough linked career history to draw this chart yet.
Roles most likely to require tool/function calling
Among roles with at least 20 postings in the same period.
| Role | Postings mentioning skill | % of role postings mentioning skill |
|---|---|---|
| AI Operations Engineer | 8 | 22.2% |
| Research Fellow | 1 | 5.0% |
| SRE Engineer | 1 | 4.0% |
| Agentic AI Engineer | 2 | 3.6% |
| AI Enablement Lead | 1 | 2.9% |
| AI Engineering Lead | 1 | 2.8% |
| GenAI Engineer | 1 | 2.7% |
| Salesforce Business Analyst | 1 | 2.5% |
| Full Stack AI Engineer | 1 | 2.4% |
| Python Engineer | 1 | 2.0% |
Roles with the most tool/function calling postings
| Role | Postings mentioning skill | Share of skill postings |
|---|---|---|
| AI Engineer | 37 | 17.1% |
| Software Engineer | 35 | 16.2% |
| Data Scientist | 9 | 4.2% |
| AI Operations Engineer | 8 | 3.7% |
| Applied AI Engineer | 7 | 3.2% |
| Data Engineer | 5 | 2.3% |
| Machine Learning Engineer | 5 | 2.3% |
| Product Manager | 5 | 2.3% |
| AI/ML Engineer | 4 | 1.9% |
| Solution Architect | 4 | 1.9% |
Top companies posting jobs requiring tool/function calling
Employers ranked by indexed job postings in the last 90 days.
| Company | Postings · 90 days |
|---|---|
| Cisco | 8 |
| AMD | 4 |
| Elsevier | 4 |
| Randstad | 4 |
| Anthropic | 3 |
| UiPath | 3 |
| Artefact | 3 |
| QAD | 3 |
| NVIDIA | 3 |
| MSD | 3 |
Job postings indexed over the past 90 days, grouped by resolved employer. Counts are postings, not hires. Companies without a published page appear without a link.
Top metros hiring for tool/function calling
| Name | Postings | Share |
|---|---|---|
| San Jose | 7 | 3.2% |
| New York City | 6 | 2.8% |
| Bengaluru | 5 | 2.3% |
| San Francisco | 5 | 2.3% |
| Hyderabad | 4 | 1.9% |
| London | 4 | 1.9% |
| Paris | 4 | 1.9% |
| Toronto | 4 | 1.9% |
| Bucharest | 3 | 1.4% |
Skills commonly paired with tool/function calling
Explore related pages
How this was computed
Weekly job-count charts omit the incomplete current week (weeks start Monday, UTC). Totals include all postings in the stated window. Counts derive from the Skillenai jobs index over the 90 days ending 2026-10-31. Skills are resolved against the Skillenai canonical taxonomy, so the same entity is counted whether a posting writes 'Python', 'Python 3', or 'python'. Role prevalence divides postings mentioning tool/function calling by all postings for each role in the same window, ranking roles with at least 20 postings. Role distribution divides each role’s tool/function calling postings by all tool/function calling postings, including postings without a role. Shares need not sum to 100% for the displayed roles. Pages refresh weekly (or daily for the top-50 most-requested skills). Adjusted posting share: 0.1% to 0.1%. Demand share change is the relative percentage change between these adjusted shares. Each employer-and-ATS group has at least 10 postings in each 90-day window; its earlier posting count supplies the same weight in both windows. The panel includes 2,482 identified employers and covers 71% of earlier and 70% of latest indexed postings. Windows: 2026-06-30 to 2026-09-28 and 2026-07-28 to 2026-10-26 (UTC; end dates excluded). The windows overlap by 62 days. Dates reflect indexing, not the employer’s posting date. This measures posting mix, not total hiring or market-wide demand. Matching excludes entrants and exits; changes in crawl completeness within an employer or ATS can still affect the result.
- source
- Skillenai jobs index, deduplicated daily
- entity_id
- 66da77518f3ceeb2
- data_as_of
- 2026-10-31
- window_days
- 90