Frontend Architect - WASM & High-Performance Bundling

Crossing Hurdles; San Francisco (CA); On-site; USD 100,000 - 300,000; Full time

Job summary

Crossing Hurdles is seeking a Frontend Architect in San Francisco, California, to develop a next-generation AI-native design platform. The role requires 8–12+ years of experience in systems software, particularly with strong WebAssembly and performance engineering skills. Candidates should be capable of designing secure sandboxes for untrusted code execution, guiding technical direction, and mentoring fellow engineers. Compensation ranges from $100k to $300k, inclusive of equity.

Qualifications

• 8+ years of experience building systems software in high-growth tech environments.
• Strong expertise in WebAssembly with knowledge of ABI boundaries and memory models.
• Experience integrating and optimizing JS/TS tooling pipelines.

Responsibilities

• Design and build a high-performance virtual filesystem.
• Drive measurable performance improvements across execution paths.
• Set technical direction for runtime architecture.

Skills

WebAssembly expertise

Building systems software

Full-Stack or Frontend Engineering

Performance engineering

Building high-performance virtual filesystems

JS/TS tooling integration

Job description

Crossing Hurdles is seeking a Frontend Architect in San Francisco, California, to develop a next-generation AI-native design platform. The role requires 8–12+ years of experience in systems software, particularly with strong WebAssembly and performance engineering skills. Candidates should be capable of designing secure sandboxes for untrusted code execution, guiding technical direction, and mentoring fellow engineers. Compensation ranges from $100k to $300k, inclusive of equity.