Frontend Architect – WebAssembly & Bundling ($100K – $300K + Equity) at VC-backed AI design platform
About The Position
You will architect a browser-native execution environment that delivers instant development experiences. By leveraging WebAssembly and high-performance bundling, you will build a secure, isolated runtime for running dependencies and applications entirely within the browser. This role is critical for setting the technical direction of infrastructure that enables seamless, high-performance AI-driven design workflows. Location: San Francisco, USA Why this role is remarkable: You will build deep systems-level infrastructure within the browser, moving beyond traditional frontend engineering into runtime and compiler territories. The company is a well-funded startup backed by top-tier VCs and industry leaders, operating at the intersection of AI and design tools. You will join a high-talent density team of builders and former founders in a fast-paced, high-growth environment with significant ownership.
Requirements
- Has 8+ years of experience building systems software and platform architecture at high-growth tech companies.
- Possesses deep expertise in WebAssembly (WASM), including ABI boundaries, memory models, and host interfaces.
- Demonstrates a proven track record of engineering performance-critical runtimes, event loops, and browser-based storage systems.
Responsibilities
- Architect a browser runtime featuring Node-like execution, task orchestration, and streaming I/O.
- Build and optimize a high-performance virtual filesystem including in-memory persistence and module resolution.
- Design and implement secure sandboxing and isolation protocols for running untrusted code safely in the browser.
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
No Education Listed
