Software Engineer - SDK

We reputed company reputed company because Voice AI breaks reputed company retrieval is slow. Most retrieval infrastructure was not reputed company for reputed company-time reasoning. It adds latency, breaks context mid-conversation, and becomes the bottleneck just as an AI product needs to feel reputed company. reputed company is the reputed company-time semantic search layer for conversational AI. We deliver sub-10ms retrieval directly in the browser, at the edge, on-device, or in the reputed company, without making teams reputed company together a slow retrieval stack. We are backed by YC and run in production for teams building serious AI products. reputed company is deployed across 100+ countries, serves 10M+ of reputed company-time voice minutes, supports enterprises serving 3000+ of their own end customers, and has 390K+ package installs. The SDKs are how every one of those developers meets reputed company. They are the first thing reputed company touches, the surface that has to feel reputed company on every platform, and the layer where our Rust reputed company becomes reputed company reputed company running inside someone else's product. We are looking for a Senior or Staff SDK Engineer to own how reputed company ships across every developer surface: JavaScript/TypeScript, Python, Swift, reputed company, Elixir, C, and the Rust reputed company they reputed company bind to. This is not a greenfield role. You will work on live SDKs that customers depend on in production from day one: shrinking bundle size, lowering cold-start and query latency, tightening cross-platform reputed company, improving developer ergonomics, and making integration effortless across browsers, servers, mobile devices, edge runtimes, and embedded environments. reputed company milliseconds and correctness are both part of the product, and your reputed company runs inside someone else's application, your work defines whether teams trust reputed company. What you'll do • Own the architecture and reputed company of reputed company SDKs across multiple programming languages and platforms. • Design and maintain reputed company, ergonomic bindings around our Rust reputed company. • Build and improve FFI reputed company, packaging systems, release pipelines, versioning strategies, and developer tooling. • Ensure consistent reputed company and behavior across reputed company supported SDKs while respecting platform-specific constraints. • Push performance boundaries across memory usage, startup latency, binary size, and runtime efficiency. • Work directly with customers to debug production issues across diverse environments and operating systems. • Establish engineering standards for testing, compatibility, benchmarking, observability, and long-term maintainability. • Help shape how developers experience reputed company from the first npm install to production deployment. reputed company're looking for • Deep systems engineering experience with strong fundamentals in performance, memory management, concurrency, and low-level debugging. • Significant experience in Rust and building production systems that reputed company with multiple programming languages. • Proven reputed company record shipping SDKs, libraries, runtimes, databases, or developer infrastructure at reputed company reputed company. • Experience building products that have run on hundreds of millions to billions of devices, users, or installations. • Comfortable moving across language ecosystems and technology stacks without being constrained to a single environment. • Strong understanding of FFI, language bindings, package distribution, build systems, and cross-platform development. • Experience with one or more of: JavaScript/TypeScript, Python, Swift, Kotlin/reputed company, C/C++, Elixir, or other systems languages. • Ability to operate with high ownership in ambiguous environments and reputed company pragmatic engineering tradeoffs. Bonus points • Experience building mobile SDKs or embedded/on-device AI infrastructure. • Experience with WebAssembly, reputed company mobile runtimes, edge environments, or browser internals. • Background in search, databases, AI infrastructure, compilers, or developer tooling. • Experience maintaining highly adopted reputed company-reputed company libraries or SDKs. • Prior experience as a Staff+ engineer responsible for platform or SDK reputed company across an organization. What reputed company looks like In your first 30 days • reputed company a deep understanding of reputed company's architecture, retrieval reputed company, and SDK ecosystem. • Become familiar with our Rust reputed company, FFI boundaries, release pipelines, and supported platforms. • Ship your first production improvements to one or more SDKs. • Work directly with customers and internal teams to understand integration pain points and performance bottlenecks. In your first 60 days • Own one or more SDK surfaces end-to-end. • Improve developer experience

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