Checkr
Hiring
What they do:
People infrastructure for the future of work
Quick facts:
HQ: San Francisco, CA, United States
Top API Startups
This list has 147 startups and was last updated on Oct 15, 2026. 41 of them are hiring right now. Biggest hubs: San Francisco (73), New York (14), and Los Angeles (6). Largest teams: Checkr, Bird, and Verto.
147 startupsPage 1 of 5
What they do:
The world’s largest omnichannel communications platform
Quick facts:
HQ: Amsterdam, Netherlands
Verto
Hiring
What they do:
Cross-Border Payments and FX Simplified
Quick facts:
HQ: London, United Kingdom
Modern Treasury
Hiring
What they do:
Payment operations tools for money movement.
Quick facts:
HQ: San Francisco, CA, United States
Alpaca
Hiring
What they do:
API-first stock and crypto brokerage platform
Quick facts:
HQ: San Francisco, CA, United States
Gigs
Hiring
What they do:
The OS for Embedded Telecom
Quick facts:
HQ: San Francisco, CA, United States
Deepgram
Hiring
What they do:
Building foundational AI for speech transcription and understanding.
Quick facts:
HQ: San Francisco, CA, United States
Quicknode
Hiring
What they do:
Tools & infra to build and scale high-quality blockchain applications.
Quick facts:
HQ: Miami, FL, United States
What they do:
Embedded banking software platform and marketplace
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Power commerce photography with generative AI
Quick facts:
What they do:
Video infrastructure for developers
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Identity Verification API for Emerging Markets
Quick facts:
Finch
Hiring
What they do:
Finch is the Employment Data Platform
Quick facts:
HQ: San Francisco, CA, United States
Veryfi, Inc.
Hiring
What they do:
Document AI. One API Call.
Quick facts:
HQ: San Francisco, CA, United States
Enode
Hiring
What they do:
Energy Orchestration Platform
Quick facts:
AssemblyAI
Hiring
What they do:
The best way to build Voice AI apps
Quick facts:
HQ: New York, NY, United States
What they do:
One API to get clean data from any website for your AI agents at scale
Quick facts:
HQ: Austin, TX, United States
Duffel
Hiring
What they do:
The complete toolkit to sell travel.
Quick facts:
HQ: London, United Kingdom
What they do:
API Platform for Banking Integrations (Plaid for India and APAC)
Quick facts:
OneFin
Hiring
What they do:
Shopify for Financial Services
Quick facts:
Tailor
Hiring
What they do:
Headless ERP for retail operations
Quick facts:
HQ: Tokyo, Japan
Coast
Hiring
What they do:
Demo Platform for API-First Companies
Quick facts:
HQ: New York, NY, United States
Recall.ai
Hiring
What they do:
The API to get recordings, transcripts, and metadata from meetings
Quick facts:
HQ: San Francisco, CA, United States
Metriport
Hiring
What they do:
Healthcare data infrastructure for next generation care delivery.
Quick facts:
HQ: San Francisco, CA, United States
Escape
Hiring
What they do:
Offensive security for the teams that are 100x outnumbered
Quick facts:
What they do:
Plaid for Brazil: we allow developers to access users' financial data
Quick facts:
Alpha Vantage
Hiring
What they do:
Developer-friendly and enterprise-grade APIs for financial market…
Quick facts:
HQ: Boston, MA, United States
Seam
Hiring
What they do:
API for IoT Devices
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Prevent Fraud and Onboard Users Faster
Quick facts:
Handoff
Hiring
What they do:
AI estimator & agent for remodelers.
Quick facts:
HQ: Austin, TX, United States
Serif Health
Hiring
What they do:
Healthcare Price Transparency APIs and Data Products
Quick facts:
HQ: Los Angeles, CA, United States
What they do:
Stripe-like API Docs in just a few clicks
Quick facts:
HQ: Tbilisi, Georgia
Junction
Hiring
What they do:
API for at-home health data
Quick facts:
HQ: London, United Kingdom
Terminal
Hiring
What they do:
Plaid for Telematics Data in Commercial Trucking
Quick facts:
Oway
Hiring
What they do:
Building the open operating system for the automated physical economy.
Quick facts:
HQ: San Francisco, CA, United States
Svix
Hiring
What they do:
Enterprise ready webhooks service, open-source and in the cloud
Quick facts:
HQ: San Francisco, CA, United States
Questions and answers
How many startups are on this list?
There are 147 startups on this list, last updated on Oct 15, 2026.
Which of them are hiring?
41 of them are hiring right now, including Checkr, Verto, and Modern Treasury.
Which of them have the largest teams?
By team size: Checkr (800 employees), Bird (500 employees), and Verto (170 employees).
Where are they based?
The biggest hubs are San Francisco (73), New York (14), and Los Angeles (6).