Founding Engineer (AI Engineer)

Job Description

We’re a team of ex-CTOs, founders, and builders who thrive on solving hard problems with high velocity. Egos are checked at the door—what matters is shipping transformative technology.

We’ve built a prompt-first programming language that combines the simplicity of Notion with the structured power of code and LLMs. Our vision? To create the AI-native operating system that will redefine how software is built for the next decade.

Backed by the largest seed round in YC history ($30M), we’re scaling fast with 300,000+ signups and a product at the forefront of the AI revolution. Now, we need exceptional engineers to help us execute on this ambitious mission.What You’ll Do

Design and build the core architecture of our AI-driven programming language and runtime.

Work at the intersection of LLMs, developer tools, and human-computer interaction—blurring the lines between natural language and code.

Optimize for abstraction, usability, and performance in a system that empowers both technical and non-technical users.

Collaborate with a small, elite team to ship fast and iterate relentlessly.

Shape the future of AI-native development alongside founders and early engineers.Who You Are

A pragmatic systems thinker with deep experience in programming languages, compilers, or developer tools (or a voracious appetite to learn).

Passionate about AI/ML and how LLMs can revolutionize software creation.

Comfortable in low-level systems (e.g., Rust, Go, C++) and high-level UX (e.g., TypeScript, React).

Obsessed with clean abstractions and removing friction for users.

Thrive in 0 1 environments—you ship fast, debate fiercely, and execute relentlessly.

Bonus: Experience with language design, DSLs, or AI-powered tooling.Why Join?

Work on a category-defining product with massive traction.

Learn from ex-CTOs and founders who’ve built and scaled before.

Competitive salary, equity, and benefits (top-tier health, 401k, etc.).

Hybrid flexibility in one of SF’s most inspiring offices (Crissy Field views included).Apply

If you’re ready to build the future of AI-powered development, we want to hear from you. No fancy cover letters—just share what you’ve built and why you’re excited to reinvent how software gets made.

Full-time