LiquidLabs

We’re building something big: an AI App Builder where artificial intelligence writes the code, turning developers’ and founders’ ideas into live apps in just minutes.

Our MVP is ready. Now we’re leveling up. Making the platform faster, smarter, and more powerful.
 

We’re looking for a Senior Node.js Developer who’s excited to help shape the future of AI-powered software creation.

⚙️ What You’ll Be Building

• A real-time “Live Preview” system that runs AI-generated React code inside an isolated iframe
• Hot-reload logic for instant code updates
• An elegant Error Boundary system that catches and displays runtime errors beautifully
• A flexible front-end environment using TailwindCSS, and React 18
• Deep performance optimizations. 50+ concurrent previews, Worker-based transforms, caching, and more

🧠 What We’re Looking For
 

• Strong experience with Node.js, Next.js 14+, React 18+, TypeScript, and TailwindCSS
• Familiarity with Server Components, App Router, and modern React patterns
• Hands-on experience with Babel Standalone, iframe sandboxing, and postMessage API (super important)
• Solid understanding of JavaScript runtime, scope isolation, and module execution
• Care for error handling, security, and performance
• Bonus: experience with AI tools, no-code, or low-code builders

💡 You’ll Fit Right In If You…

• Think like a system builder, not just a coder
• Love figuring out how things work under the hood
• Care about architecture, performance, and great UX
• Are genuinely curious about AI, automation, and the future of software
• Can read and write solid technical English

🌍 Why Join Us?
 

• Be part of the real AI revolution, not just the hype
• Your code will reach thousands of developers worldwide
• Work with a global team of top engineers pushing creative boundaries
• Fully remote, flexible hours, zero micromanagement

💬 Final Thought

“In the future, apps won’t be built by people. They’ll be built by AIs that write code for people.

But the ones building those AIs… are still us.” 💡

The Mission: We are building the next generation of software creation. A fully autonomous AI Coding Agent that can plan, code, debug, and deploy full-stack applications directly in the browser. 

We are looking for a Founding Engineer who understands the deep internals of how code is parsed, executed, and orchestrated. You will be building the engine that turns natural language into running software.

The Challenge: Most developers use IDEs; we are building one. 

You will solve complex problems at the intersection of Compiler Theory, Browser Internals, and Large Language Models.What You Will Build (Core Responsibilities):
 

• Browser-Based Runtime: Architect and maintain a secure, high-performance execution environment within the browser (using WebContainers, WebAssembly, or similar sandboxing technologies).
   
• AST & Code Manipulation: Build systems that don't just "guess" code but understand it. You will work with ASTs (Abstract Syntax Trees) to perform safe code injections, refactoring, and linting programmatically.
   
• LSP Integration: Implement and customize Language Server Protocols to provide the AI agent with real-time feedback (type errors, linting issues) so it can "fix itself" before the user even sees the error.
   
• LLM Orchestration: Design the "Agentic Loop." Manage the context window efficiently, implementing RAG (Retrieval-Augmented Generation) over a dynamic file system, and determining when the AI should plan, write, or debug.
   

Who You Are (Requirements):
 

• Deep Systems Knowledge: You aren't just a React developer. You understand how Node.js works internally, how a file system is structured, and how compilers parse code.
   
• The "IDE" Stack: You have hands-on experience with:
  • ASTs (babel, swc, acorn, or tree-sitter).
  • LSP (Language Server Protocol) implementation.
  • WebContainers / WASM (Running server-side code in the browser).
     
• AI Engineering: Experience building agents that use tool-calling (function calling) and structured outputs (JSON schema generation).
   
• Builder Mentality: You have likely built your own developer tools, plugins, CLI tools, or open-source libraries in the past.
   

Bonus Points:
 

• Experience with CRDTs (Yjs/Automerge) for real-time collaboration.
• Proficiency in Rust (for tooling performance).
   

Why Join Us?
 

• High Impact: You will be one of the first engineers, shaping the entire architecture of the product.
• Hard Problems: If you are bored of building CRUD apps and want to push the limits of what a browser can do, this is for you.
• Competitive Equity & Salary: We are building a unicorn, and we want you to own a piece of it.