Function calling jobs in 2026 — demand, top roles hiring, and related skills
As of 2026-09-30, Function calling appears in 416 job postings indexed by Skillenai over the past 90 days — AI Engineer has the most postings mentioning Function calling, with demand share up 4.2% vs the prior 4 weeks.
Last updated · 90d ending 2026-09-30
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Frequently asked questions about Function calling
+Is Function calling in demand in 2026?
Yes. Function calling appears in 416 job postings indexed by Skillenai over the 90 days ending 2026-09-30. AI Engineer accounts for the most postings mentioning Function calling (14.7% of all postings mentioning Function calling).
+What jobs require Function calling?
According to the Skillenai jobs index over the 90 days ending 2026-09-30, among roles with at least 20 postings, the highest shares mentioning Function calling are Applied Value Engineer (35.0% of that role’s postings mention Function calling), Applied Machine Learning Engineer (25.0% of that role’s postings mention Function calling), AI Solutions Engineer (13.0% of that role’s postings mention Function calling).
+What skills are commonly paired with Function calling?
Across job postings indexed by Skillenai (90 days ending 2026-09-30), Function calling most often appears alongside Python, prompt engineering, RAG, LangChain, tool use.
+Where is Function calling most in demand?
As of 2026-09-30, the metro areas posting the most jobs requiring Function calling are San Francisco, Singapore, New York City, San Mateo, Bengaluru, according to the Skillenai jobs index.
+How can I keep up with new Function calling content and jobs?
Skillenai indexes news, blog posts, and research papers mentioning Function calling alongside the jobs index. You can subscribe to a daily email digest of new Function calling content from your Skillenai account.
+Which skills come before and after 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 Function calling — last 90 days
Salary distribution
Box = 25th–75th percentile · tick = median · whisker = 10th–90th · USD, annualized
Career paths around Function calling
Skills documented before and after this skill across employer changes.
Historical career profiles · all locations
Skills before Function calling
Skills after Function calling
No published outgoing skill pairs yet.
How to read this chart · view counts
Each side is an independent set of observed employer moves, not the same people followed through three stages. Ribbon widths compare move counts within that side. Internal moves are not included.
The following position documents a skill that the preceding position does not. Skills must be linked to both positions, with clear dates and no overlap. One move can connect several skill pairs. These patterns suggest skills to explore; they do not establish prerequisites, when a skill was learned, or a higher skill level.
Source: Skillenai talent graph, historical career profiles. Historical descriptions and coverage can change. Only the leading published connections are shown.
| Connection | Moves |
|---|---|
| Before: synthetically generated | 1 |
| Before: machine learning model | 1 |
| Before: Amazon SNS | 1 |
| Before: synthetic data generation | 1 |
| Before: ML | 1 |
| Before: Time series forecasting | 1 |
| Before: Gen AI | 1 |
| Before: AWS CloudWatch Logs export service | 1 |
Roles most likely to require Function calling
Among roles with at least 20 postings in the same period.
| Role | Postings mentioning skill | % of role postings mentioning skill |
|---|---|---|
| Applied Value Engineer | 14 | 35.0% |
| Applied Machine Learning Engineer | 6 | 25.0% |
| AI Solutions Engineer | 3 | 13.0% |
| Value Engineer | 5 | 11.6% |
| Forward Deployed AI Engineer | 11 | 11.6% |
| Application Software Engineer | 4 | 7.3% |
| Applied AI Architect | 5 | 6.6% |
| AI Operations Engineer | 2 | 6.2% |
| Developer Relations Manager | 2 | 5.7% |
| AI Agent Engineer | 4 | 5.5% |
Roles with the most Function calling postings
| Role | Postings mentioning skill | Share of skill postings |
|---|---|---|
| AI Engineer | 61 | 14.7% |
| Software Engineer | 50 | 12.0% |
| Forward Deployed Engineer | 23 | 5.5% |
| Applied Value Engineer | 14 | 3.4% |
| Forward Deployed AI Engineer | 11 | 2.6% |
| AI Field Engineer | 9 | 2.2% |
| AI Software Engineer | 9 | 2.2% |
| Staff Engineer | 9 | 2.2% |
| Machine Learning Engineer | 8 | 1.9% |
| Product Manager | 8 | 1.9% |
Top companies posting jobs requiring Function calling
Employers ranked by indexed job postings in the last 90 days.
| Company | Postings · 90 days |
|---|---|
| Fireworks | 33 |
| DevRev | 26 |
| Celonis | 19 |
| Highmetric | 18 |
| CLERA | 8 |
| Accenture | 8 |
| Stripe | 7 |
| Bristol Myers Squibb | 7 |
| Niural | 5 |
| Twilio | 5 |
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 Function calling
| Name | Postings | Share |
|---|---|---|
| San Francisco | 26 | 6.3% |
| Singapore | 20 | 4.8% |
| New York City | 17 | 4.1% |
| San Mateo | 15 | 3.6% |
| Bengaluru | 11 | 2.6% |
| London | 11 | 2.6% |
| Hyderabad | 7 | 1.7% |
| Austin | 6 | 1.4% |
| Bellevue | 5 | 1.2% |
Skills commonly paired with Function calling
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How this was computed
Counts derive from the Skillenai jobs index over the 90 days ending 2026-09-30. 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 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 Function calling postings by all 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: 0.2% to 0.2%. 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 2,595 identified employers and covers 68% of earlier and 72% of latest indexed postings. Windows: 2026-06-02 to 2026-08-31 and 2026-06-30 to 2026-09-28 (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
- f08d6f00f161dc8b
- data_as_of
- 2026-09-30
- 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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