Founding Engineer (AI Engineer)

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Company: nexus IT group

Location: San Francisco, CA 94112

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 01 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.

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