About Stainless
Stainless is a Technology company based in Brooklyn (United States) founded in 2022 by Alex Rattray. Cloud based API development platform. Stainless has raised $25 million across 1 funding round from investors including MongoDB, Zapier and Andreessen Horowitz. Its chief executive, as recorded, is Alex Rattray. Its focus areas include Enterprise Infrastructure, API Management, API Tools and Development. Its legal entity is STAINLESS SOFTWARE INC. Its competitors include Platformatic, StepZen and StrongLoop; 3 of its 3 listed competitors have raised funding.
Company details
Stainless was founded in 2022 and is headquartered in Brooklyn, United States. The company operates in the software development sector, focusing on cloud-based platforms for API creation. SDKs are generated in real time from OpenAPI specifications, supporting languages such as TypeScript, Java, and Python. Additional features include automated updates and package publishing to streamline API development processes.
- Headquarters Brooklyn, United States
- Founders Alex Rattray
- SectorsTechnology
- Emailβ’β’β’β’β’β’β’β’
- Website stainlessapi.com
- Social LinkedIn X YouTube
- Legal Name Stainless Software Inc.
- Total Equity Funding$25M (USD)
in 1 rounds
- Latest Funding Round$25M (USD), Series A
Dec 2024
- InvestorsMongoDB
& 7 more
Apps and channels of Stainless
its YouTube channel Stainless has 76 subscribers and 10 videos.
Videos from Stainless
The most watched videos on Stainless's YouTube channel, Stainless (76 subscribers). Click a video to play it here.
More on Stainless.
Funding Insights of Stainless
Stainless has successfully raised a total of $25M through 1 strategic funding round. The most recent funding activity was a Series A round of $25 million completed in December 2024. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $25M
- Total Rounds 1
- Last Round Series A β $25M
- First Round $25M
(Dec 2024)
- Investors Count 8
All 1 funding rounds of Stainless with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Dec 2024 | $25M | Series A | β | a16z |
8 investors in total: 6 institutional and 2 angel.
Investors in Stainless
Stainless has secured backing from 8 investors, including venture fund, institutional, and angel investors. Prominent investors backing the company include MongoDB, Zapier and Andreessen Horowitz.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Venture capital investments in technology sectors are handled by Andreessen Horowitz. | a16z.com | |||
Sequoia Capital is engaged in venture capital investments. | 1972 | sequoiacap.com | ||
Venture capital firm early-stage investments | thegp.com | San Francisco, United States | ||
Investments in technology startups are made by Felicis Ventures. | felicis.com | Menlo Park, United States | ||
No-code automation and AI tools are provided for workflow integration. | 2011 | zapier.com | San Francisco, United States | |
A cloud-based database-as-a-service platform is provided for application development. | 2007 | mongodb.com | New York, United States | |
CJ Claire Johnson | unknown_d949efb465244a109 | |||
AA Amit Agarwal | unknown_2fe7331677634e6b9 |
Investor details for Stainless
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
- Complete investor list
- Round participation
- Investor portfolios
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Verified entity values are shown only after access is granted.
People of Stainless
15 people are tracked at Stainless (3 in leadership, 12 in team).
| Name | Role | Group |
|---|---|---|
Alex Rattray | Founder & CEO | Leadership |
Eric MacBlane | Head Of Strategy & Operations | Leadership |
Mark Mcgranaghan | Head Of Engineering | Leadership |
Ryan Paul | Software Engineer | Team |
Robert Craigie | Software Engineer | Team |
David Meadows | Software Engineer | Team |
David Ackerman | Software Engineer | Team |
Tomer Aberbach | Software Engineer | Team |
Young - Jin Park | Software Engineer | Team |
Hao Wang | Software Engineer | Team |
Sam El - Borai | Software Engineer | Team |
Cj Quines | Software Engineer | Team |
Eric Morphis | Software Engineer | Team |
Matt Casey | Software Engineer | Team |
Brian Krausz | Software Engineer | Team |
Complete people profiles for Stainless
Full employee and board profiles, team structure, tenure and professional contact details require an active premium plan.
- Full employee list
- Team structure
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Verified entity values are shown only after access is granted.
Timeline of Stainless
2 dated milestones of Stainless across 2 years, from founding to its latest funding, stage changes and deals.
- Founded Stainless is founded.
- Funding First funding round of $25.0M.
Competitors of Stainless
Stainless has 3 listed competitors in our database, 3 of them funded. They include Platformatic, StepZen and StrongLoop.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| platformatic.dev | 2022 | San Francisco, United States | $7.8M | API development software for developers | ||
| stepzen.com | 2016 | San Jose, United States | $8M | Cloud-based API development solution provider | ||
| strongloop.com | 2013 | San Mateo, United States | $9M | API development platform with mBaaS and Node.js tools is offered. |
Detailed competitors of Stainless
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
- Full competitor set
- Operating metrics
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- Competitive positioning
Verified entity values are shown only after access is granted.
Web traffic of Stainless
Websites that share an audience with Stainless (stainlessapi.com).
Websites whose visitors overlap most with Stainless. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
stainless.com | stainless.com | 100% | #531,549 | β |
Top companies in API Management
3 companies that operate in the same segment as Stainless (API Management) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
API management software is provided for lifecycle development and monitoring. | 2004 | Alameda, California, United States | USD 45 M | |||
Cloud-based API management and integration solutions are offered. | 2006 | San Francisco, California, United States | USD 259.35 M | 1,053 | ||
Cloud-based API security is delivered via distributed tracing and analytics. | 2018 | San Francisco, California, United States | USD 110.25 M |
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Related news about Stainless
Complete news archive for Stainless
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Frequently Asked Questions about Stainless
Stainless was founded in 2022 and raised its 1st funding round 2 years after it was founded.
Stainless is headquartered in Brooklyn, United States. It is registered at Brooklyn, New York, United States.
Alex Rattray is the CEO of Stainless, as recorded in our data. They have also founded this company.
Stainless is a funded company, having raised a total of $25M across 1 funding round to date. The company's 1st funding round was a Series A of $25M, raised on Dec 2024.
Stainless was founded in 2022 and is headquartered in Brooklyn, United States. The company operates in the software development sector, focusing on cloud-based platforms for API creation. SDKs are generated in real time from OpenAPI specifications, supporting languages such as TypeScript, Java, and Python. Additional features include automated updates and package publishing to streamline API development processes.
Stainless's top competitors include Platformatic, StepZen and StrongLoop.
Stainless has 8 investors. Key investors include MongoDB, Zapier, Andreessen Horowitz, Sequoia Capital, and The General Partnership.
Stainless operates through Stainless Software Inc..

