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Companies Using FastAPI in United States

639 companies are hiring FastAPI talent in United States, with 1,229 open roles.

639
Companies
1,229
Open Roles

FastAPI is a Python-based framework companies adopt when building high-performance APIs, particularly for AI/ML services and microservices architectures. When a company posts FastAPI roles, they're actively constructing or scaling a backend infrastructure layer — often to support LLM integrations, real-time data pipelines, or internal tooling. These companies are simultaneously in-market for cloud infrastructure, API management platforms, vector databases, and MLOps tooling.

Buying Signal

A company hiring FastAPI engineers is building something new — not maintaining legacy code. This signals active spend decisions around developer tooling, cloud compute, and data infrastructure. DevOps platform vendors, observability providers, and database vendors should be prospecting these accounts immediately, as the stack is being assembled, not locked in.

Top Companies50 shown

CompanyIndustryHQ LocationSizeJobsLast SeenLinks
S
St. George Tanaq Corporation
 Business Consulting and Services Anchorage, United States 10,001+ 114 6w ago
Klaviyo
klaviyo.com
 Marketing Services Boston, United States 1,001–5,000 12 6w ago
Commure
commure.com
 Hospitals and Health Care Mountain View, United States 1,001–5,000 10 7w ago
84.51˚
8451.com
 Business Consulting and Services Cincinnati, United States 1,001–5,000 6 2mo ago
Icertis
icertis.com
 Software Development Bellevue, United States 1,001–5,000 6 6w ago
Rocket Lab
rocketlabcorp.com
 Aviation and Aerospace Component Manufacturing Long Beach, United States 1,001–5,000 6 6w ago
Mercury
mercury.com
 Financial Services San Francisco, United States 1,001–5,000 4 1mo ago
Headway
headway.co
 Mental Health Care New York, United States 501–1,000 9 6w ago
BeaconFire Inc.
beaconfireinc.com
 IT Services and IT Consulting East Windsor Township, United States 501–1,000 8 6w ago
SeatGeek
seatgeek.com
 Software Development New York, United States 501–1,000 6 7w ago
Lambda
lambda.ai
 Software Development San Francisco, United States 501–1,000 4 2mo ago
Athelas
athelas.com
 Hospitals and Health Care Mountain View, United States 201–500 10 3mo ago
OpenAI
chatgpt.com
 Research Services San Francisco, United States 201–500 5 6w ago
Perplexity
perplexity.ai
 Software Development San Francisco, United States 201–500 5 6w ago
Ro
ro.co
 Hospitals and Health Care New York, United States 201–500 5 6w ago
Regard
regard.com
 Software Development New York, United States 51–200 14 6w ago
Read AI
read.ai
 Software Development Seattle, United States 51–200 9 2mo ago
Saransh Inc
saranshinc.com
 IT Services and IT Consulting Princeton, United States 51–200 8 7w ago
The Flex
theflex.global
 Real Estate City of London, United Kingdom 51–200 8 3mo ago
C the Signs
cthesigns.com
 Hospitals and Health Care Greater London, United Kingdom 51–200 7 2mo ago
Innovative Solutions
innovativesol.com
 Information Technology & Services Town of Henrietta, United States 51–200 7 3mo ago
Quevera
quevera.com
 IT Services and IT Consulting Columbia, United States 51–200 7 7w ago
OVA.Work
ova.work
 Software Development Alpharetta, United States 51–200 6 5mo ago
360 Privacy
360privacy.io
 Computer and Network Security Nashville, United States 51–200 5 6w ago
Liberate
liberateinc.com
 Technology, Information and Internet Berkeley, United States 51–200 5 6w ago
micro1
micro1.ai
 Software Development San Francisco, United States 51–200 5 6w ago
Sharetec Systems
sharetec.com
 Software Development Fort Wayne, United States 51–200 5 7w ago
StackAI
stack-ai.com
 Software Development San Francisco, United States 51–200 5 6w ago
Chelsoft Solutions Co.
chelsoftusa.com
 IT Services and IT Consulting Olathe, United States 51–200 4 4mo ago
Newcode.ai
newcode.ai
 Software Development Oslo, Norway 11–50 6 5mo ago
Stuut
stuut.co
 Software Development San Francisco, United States 11–50 6 6w ago
Alignerr
alignerr.com
 Technology, Information and Internet 11–50 4 2mo ago
Altimate AI
altimate.ai
 Software Development Sunnyvale, United States 11–50 4 4mo ago
Reacher
reacherapp.com
 Technology, Information and Internet San Francisco, United States 2–10 9 7w ago
Peppr AI (YC W25)
usepeppr.ai
 Technology, Information and Internet 2–10 6 7mo ago
Headstart AI
codewithfriday.com
 Software Development New York, United States 2–10 4 3mo ago
Heliux
heliux.com
 Software Development San Francisco, United States 2–10 4 7w ago
Thomson Reuters
thomsonreuters.com
 Software Development Toronto, Canada 10,001+ 23 6w ago
Alvarez & Marsal
alvarezandmarsal.com
 Business Consulting and Services New York, United States 10,001+ 10 7w ago
Apple
apple.com
 Computers and Electronics Manufacturing Cupertino, United States 10,001+ 6 5w ago
Tata Consultancy Services
tcs.com
 IT Services and IT Consulting Mumbai, India 10,001+ 6 6w ago
The Hartford
thehartford.com
 Financial Services Hartford, United States 10,001+ 6 5w ago
Elevance Health
elevancehealth.com
 Hospitals and Health Care Indianapolis, United States 10,001+ 5 6w ago
Guidehouse
guidehouse.com
 Business Consulting and Services McLean, United States 10,001+ 5 7w ago
Infosys
infosys.com
 IT Services and IT Consulting Electronic City, India 10,001+ 5 1mo ago
Synechron
synechron.com
 Technology, Information and Internet New York, United States 10,001+ 5 6w ago
Blue Origin
blueorigin.com
 Aviation and Aerospace Component Manufacturing Kent, United States 10,001+ 4 7w ago
Boeing
boeing.com
 Aviation & Aerospace Arlington, United States 10,001+ 4 6w ago
Humana
humana.com
 Insurance Louisville, United States 10,001+ 4 6w ago
LexisNexis
lexisnexis.com
 IT Services and IT Consulting New York, United States 10,001+ 4 7w ago

639 companies use FastAPI. Want the full list?

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Companies with open FastAPI roles in United States. Company HQ may be in a different location.

▲Market Signal

With 734 U.S. companies posting over 1,300 FastAPI roles, demand has moved well beyond early adopters into mainstream enterprise adoption. That volume across software, consulting, and financial services suggests FastAPI is becoming a default backend choice for teams shipping AI-adjacent products.

⦿Stack Intelligence

The Python, Postgres, and Docker combination appearing alongside FastAPI signals a containerized, cloud-native stack built around data workloads. Companies hiring across all four are typically mid-stage engineering teams standardizing their backend before scaling — a clear window for infrastructure and data vendors. This stack profile also indicates the team is unlikely to be evaluating off-the-shelf SaaS replacements; they're buyers of components, not platforms.

FastAPI Hiring Landscape

Where and how companies hire FastAPI talent

By Industry

Software Development
162
IT Services and IT Consulting
118
Technology, Information and Internet
70
Business Consulting and Services
30
Financial Services
52
Hospitals and Health Care
26
Information Technology & Services
20
Defense & Space
5

Top Roles

Full Stack Cloud Developer (AI/ML integration)41Software Engineer34Python Developer28Senior Software Engineer23AI Engineer20Senior Backend Engineer19Full Stack Engineer14Backend Engineer13Senior Data Engineer13Staff Backend Engineer13Senior Full Stack Engineer12Staff Software Engineer12

Related Technologies

PythonPostgreSQLDocker

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Frequently Asked Questions

What is FastAPI?

FastAPI is a framework used to build APIs quickly, with built-in support for async operations and data validation — making it a common choice for backend services powering AI applications. Businesses adopt it when shipping speed and API reliability are both priorities. Hiring for it signals active backend development, typically alongside AI or data product work.

Why should sales teams track FastAPI hiring?

FastAPI hiring correlates with new infrastructure spend decisions before budgets are allocated. A sales rep targeting cloud or data tooling vendors can use these signals to reach engineering-led buyers mid-build, before a vendor is selected.

Who should be selling to companies that use FastAPI?

Vendors best positioned to sell into FastAPI-hiring companies include cloud infrastructure providers, API gateway and management platforms, observability and monitoring tools, and managed database or vector database services.