About Substrate
Substrate (Substrate Labs) is an API platform for building compound AI systems, enabling developers to define computation graphs of connected AI models and data tools. It provides optimized open-source models across text, image, audio, and vector modalities, along with built-in vector storage, a code interpreter, and logical control flow. Workflows are analyzed as directed acyclic graphs and optimized for maximum parallelism and throughput.
Company details
Funding
Total raised
$8M
Last stage
Seed
Investors
Founders
Rob Cheung
Co-founder and CEO of Substrate. Previously a founding engineer multiple times over at startups including Substack and Fin.com.
Ben Guo
Co-founder of Substrate. Joined Stripe in 2015, worked on APIs/SDKs for 8+ years, and was founding engineer on Stripe Terminal.
What happens next.
No applications, no recruiter spam. Just the intro.
Confirm the fit
A few questions to make sure this role is the right shape for you. Two minutes.
I pitch you to the company
I write the intro, send it to the founder, and handle the back-and-forth.
A meeting lands on your calendar
If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.