Full-Time
Updated on 3/14/2025
Automates SDK generation for REST APIs
No salary listed
Senior, Expert
New York, NY, USA
The job offers flexible work from home options and allows for 1 month of fully remote work per year.
StainlessAPI provides tools that help software engineers create high-quality Software Development Kits (SDKs) for REST APIs. Its main product automatically generates SDKs from an OpenAPI Specification, which is a standard way to define APIs. This means developers can easily create libraries that are easy to use in their preferred programming languages, allowing them to focus on building and improving their APIs instead of spending time on writing and maintaining client libraries. Unlike many competitors, StainlessAPI emphasizes automation in the SDK generation process, which helps speed up development and ensures the code is maintainable. The company's goal is to simplify API management and development, making it easier for developers and tech companies to integrate software solutions efficiently.
Company Size
11-50
Company Stage
Series A
Total Funding
$27.7M
Headquarters
New York City, New York
Founded
2022
Help us improve and share your feedback! Did you find this helpful?
Health Insurance
Company Equity
Commuter Benefits
Unlimited Paid Time Off
Stainless Software Inc. has raised $25M in a Series A funding round led by Andreessen Horowitz, with participation from Sequoia, The General Partnership, and others. The company uses AI to generate SDKs from APIs, supporting languages like Python and Go. Stainless claims hundreds of paying customers, including OpenAI and Meta, and reports $1M in annual recurring revenue. The service offers a free tier and paid plans ranging from $250/month to $30k/year.
Stainless, a startup offering an AI-powered API-to-SDK generator to customers like OpenAI, Anthropic, and Meta, raised a $25M Series A led by a16z (Kyle wiggers/techcrunch).
Rattray, who studied economics at the University of Pennsylvania, has been building things for as long as he can remember, from an underground newspaper in high school to a bike-share program in college. Rattray picked up programming on the side while at UPenn, which led to a job at Stripe as an engineer on the developer platform team. At Stripe, Rattray helped to revamp API documentation and launch the system that powers Stripe's API client SDK.
Besides a focus on generative AI, what do AI startups like OpenAI, Anthropic and Together AI share in common? They use Stainless, a platform created by ex-Stripe staffer Alex Rattray, to generate SDKs for their APIs.Rattray, who studied economics at the University of Pennsylvania, has been building things for as long as he can remember, from an underground newspaper in high school to a bike share program in college. Rattray picked up programming on the side while at UPenn, which led to a job at Stripe as an engineer on the developer platform team.At Stripe, Rattray helped to revamp API documentation and launch the system that powers Stripe’s API client SDK. It’s while working on those projects Rattray observed there wasn’t an easy way for companies, including Stripe, to build SDKs for their APIs at scale.“Handwriting the SDKs couldn’t scale,” he told TechCrunch. “Today, every API designer has to settle a million and one ‘bikeshed’ questions all over again, and painstakingly enforce consistency around these decisions across their API.”Now, you might be wondering, why would a company need an SDK if it offers an API? APIs are simply protocols, enabling software components to communicate with each other and transfer data. SDKs, on the other hand, offer a set of software-crafting tools that plug into APIs. Without an SDK to accompany an API, API users are forced to read API docs and build everything themselves, which isn’t the best experience.Rattray’s solution is Stainless, which takes in an API spec and generates SDKs in a range of programming languages including Python, TypeScript, Kotlin, Go and Java