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Harry Mahon

$ whoami

I’ve worked with early-stage startups and large enterprises, building from zero to one. Outside of work I make time for cooking, reading, travel, and the NBA.

$ cat experience.log

  • Startups: helped an early voice-agent company go from zero to category-leading. Worked across product and go-to-market; landed first customers. Lessons learned - fast, abundant inference, and empathetic design.
  • Enterprise: developed AI strategy, workflow adoption, and partner ecosystems.
  • Advisory: here through growth. Happy to make warm intros for win-wins. Reach out!

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About Stainless

Harry Mahon ·

Stainless API

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 engineer Alex Rattray, to generate SDKs for their APIs. Rattray founded Stainless after observing that API-based companies, even those as advanced as Stripe, struggled to scale SDK development. Stainless addresses this by generating SDKs across various programming languages, ensuring APIs are easier to integrate and maintain.

Stainless raised $3.5M in a seed round led by Sequoia and boasts dozens of paying customers in its beta, including OpenAI, Anthropic, and Cloudflare. The platform’s use of generative AI to automate the creation and updates of SDKs allows teams to scale without the overhead of building custom SDKs in multiple languages. Stainless’s solution includes managing versioning, publishing changelogs, and ensuring consistency across API implementations.

With its polished approach to API-to-SDK generation, Stainless offers more than just code libraries; it provides the foundation for platform companies to scale rapidly. As of now, Stainless boasts an annual recurring revenue approaching $1 million and is set to expand both its team and customer base. Looking ahead, Stainless is poised to play a significant role in the API ecosystem, especially as companies continue to integrate LLMs and complex APIs into their products. The demand for seamless SDK support will only grow, and Stainless is well-positioned to lead that charge.