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Hayden Bleasel

Hi, I’m Hayden Bleasel.

I design and build software on the internet. I’m originally from Sydney, Australia and currently living in San Francisco, California 🇺🇸.

I work on the DX team at Vercel, where I focus on the developer and end-user AI experience through building open source libraries and tools, such as Streamdown, AI Elements and Remend.

I'm also building Ultracite — a highly opinionated, zero-configuration linter and formatter based on Biome. It's used by Vercel, Adobe, Clerk, Profound, Axiom, Tencent and even some government institutions.

Follow me on X, or join my mailing list for infrequent updates.

Work

Previously, I was the Chief Product Officer at Corellium. I moved to Delray Beach, Florida in 2021 to lead the Product, Design and Support teams. Corellium was acquired by Cellebrite in 2025.

Before that, I was Director of Jellypepper, an award-winning digital agency for disruptive startups. We worked with early stage tech companies in niche areas such as self-driving car tech, AI, biotech, crypto, drone delivery, cybersecurity and even orbital (outer space) logistics. Jellypepper was acquired by Raw Studio in 2024.

Earlier in my career, I was Head of Product and Design at Spaceship (later acquired by eToro); contracted for many clients through R/GA, interned at Palantir as a product designer in Palo Alto, California and a handful of other roles you can read about on my LinkedIn.

I've been fortunate to work with many great companies such as Australian Ethical, Canva, Clipchamp, Google, National Geographic, Nike, R/GA, Timberland, Toyota, Westfield and many more. I also rebranded ESLint and redesigned the Node.js website.

Projects

I built a production-grade, best-in-class monorepo template for Next.js apps called next-forge and grew it to over 6,000 stars on GitHub. Vercel acquired it in 2025 as part of my hiring.

I made Orate — an AI toolkit for transcribing and synthesizing speech. After growing it to 400 stars on GitHub, Orate's functionality was merged into the Vercel AI SDK.

I made Kibo UI, a custom shadcn/ui component registry. I donated the AI components to Vercel to form the foundation of my first project — AI Elements. The remaining site was acquired by shadcnblocks.

One of my earlier successes was an app for AI code generation and refactoring called Refraction, which was acquired by Twistag.

I also maintain some open source apps, such as Tersa (an open source alternative to Flora) and Eververse (an open source alternative to Productboard). You can find the code for these on my GitHub.

Speaking

I’ve spoken at events and been interviewed for some magazines. If you’d like to interview me or invite me to speak, let me know.

Stack

Software I use, apps I love, and other things I recommend: