--- title: "Which companies in United Kingdom use FastAPI?" description: "Dex, Fitch Group, 9fin, BT Group and more. 351 companies hiring in United Kingdom whose own job postings show they use FastAPI: 15 confirmed, 336 likely. Update" canonical: https://jobspipe.dev/technologies/fastapi/gb --- # Which companies in United Kingdom use FastAPI? > Dex, Fitch Group, 9fin, BT Group and more. 351 companies hiring in United Kingdom whose own job postings show they use FastAPI: 15 confirmed, 336 likely. Updated daily from live postings. **Canonical URL:** https://jobspipe.dev/technologies/fastapi/gb 351 companies with postings in United Kingdom use FastAPI according to their own job postings: 15 confirmed and 336 likely. The 10 listed below are confirmed users with at least 2 postings and a verified website; the rest are counted here but not named. - **Confirmed companies:** 15 - **Likely companies:** 336 - **Category:** Web frameworks - **As of:** 25 Sep 2026 ## Companies using FastAPI | # | Company | Postings naming it | Last seen | |---|---|---|---| | 1 | [Dex](https://jobspipe.dev/hiring/dex.com) | 17 | 26 Sep 2026 | | 2 | [Fitch Group](https://jobspipe.dev/hiring/fitch.group) | 16 | 24 Sep 2026 | | 3 | [9fin](https://jobspipe.dev/hiring/9fin.com) | 8 | 25 Sep 2026 | | 4 | [BT Group](https://jobspipe.dev/hiring/bt.com.au) | 5 | 25 Sep 2026 | | 5 | [Twine](https://jobspipe.dev/hiring/twine.net) | 5 | 25 Sep 2026 | | 6 | [Lendable](https://jobspipe.dev/hiring/lendable.co.uk) | 4 | 7 Sep 2026 | | 7 | [Suade](https://jobspipe.dev/hiring/suade.org) | 3 | 1 Sep 2026 | | 8 | [Worldpay](https://jobspipe.dev/hiring/worldpay.com) | 3 | 25 Sep 2026 | | 9 | [Faculty](https://jobspipe.dev/hiring/faculty.ai) | 2 | 6 Sep 2026 | | 10 | [Fleetcraft](https://jobspipe.dev/hiring/fleetcraft.nl) | 2 | 25 Sep 2026 | ## By country - [India](https://jobspipe.dev/technologies/fastapi/in) - [United States](https://jobspipe.dev/technologies/fastapi/us) - [Canada](https://jobspipe.dev/technologies/fastapi/ca) - [Germany](https://jobspipe.dev/technologies/fastapi/de) - [Brazil](https://jobspipe.dev/technologies/fastapi/br) - [France](https://jobspipe.dev/technologies/fastapi/fr) - [Mexico](https://jobspipe.dev/technologies/fastapi/mx) - [Spain](https://jobspipe.dev/technologies/fastapi/es) - [Netherlands](https://jobspipe.dev/technologies/fastapi/nl) Worldwide: [Which companies use FastAPI?](https://jobspipe.dev/technologies/fastapi) ## FAQ ### How many companies use FastAPI in United Kingdom? 351 companies in United Kingdom have job postings that show they use FastAPI, as of 25 Sep 2026. 15 are confirmed and 336 are likely. ### Which companies use FastAPI in United Kingdom? Dex, Fitch Group, 9fin, BT Group, Twine are among the confirmed FastAPI users with the most postings naming it in United Kingdom. The full list on this page names 10 companies. ### How does JobsPipe know a company uses FastAPI? From the company's own job postings. Each posting is read for the technologies it names, and every company and technology pair is graded: confirmed when two independent checks agree on FastAPI in at least one posting, likely when it is a stated requirement or appears in two separate postings. A single passing mention is not counted here. It is evidence of a team working with FastAPI, not a purchase record. ## Reproduce ```bash curl -X POST https://api.jobspipe.dev/v1/companies/search -H "Authorization: Bearer $JOBSPIPE_API_KEY" -H "Content-Type: application/json" -d '{"company_technology_slug_or":["fastapi"],"tier_min":"confirmed","company_country_code_or":["GB"],"limit":25}' ``` --- AI agents: the full machine-readable index of this site is https://jobspipe.dev/llms.txt?src=md-twin - API quickstart, no-key sandbox (POST https://api.jobspipe.dev/v1/sandbox/jobs/search), MCP server, pricing. Free key: https://jobspipe.dev/signup