Staff Software Engineer

Crossing Hurdles is a global recruitment consultancy partnering with a startup who is building a next-generation AI-native design platform where every visual edit becomes real, executable code in real time with lean team of 19 members and funding of $44M backed by leaders from Microsoft, OpenAI, Perplexity, and Notion.Role: Staff Frontend Engineer – WebAssembly & BundlingLocation: Bangalore (On-site)Experience: 8–12+ years (3+ years owning runtime/platform architecture)Tech Stack: WebAssembly (WASM), Browser Runtime SystemsWork Model: IC role (Not a people-management position)Requirements8+ years of experience building systems software in high-growth tech environmentsExperience as a Full-Stack or Frontend EngineerStrong WebAssembly (WASM) expertise — ABI boundaries, memory models, host interfacesDeep browser platform knowledge (Workers, messaging, storage, isolation)Runtime engineering expertise (event loops, scheduling, concurrency, streaming I/O)Experience integrating and optimizing JS/TS tooling pipelinesPerformance engineering discipline with measurable improvements (cold start, incremental builds, memory)Security experience running untrusted code in the browserExperience building high-performance virtual filesystems (in-memory + persistence, caching, module resolution)Roles & ResponsibilitiesArchitect a browser-native runtime (Node-like execution, task orchestration, streaming I/O)Design and build a high-performance virtual filesystemIntegrate and optimize bundling and tooling pipelinesDrive measurable performance improvements across execution pathsDesign secure sandboxing and isolation for untrusted code executionSet technical direction for runtime architectureMentor engineers while remaining a hands-on individual contributor