Senior Software Engineer - Video Platform

We are building the video and rendering platform that powers Slate's collaborative video editor. This role involves systems programming, graphics rendering, and cross-platform development, working on FFmpeg integrations, WebAssembly compilation pipelines, Skia-based rendering engine, and iOS native integrations.

• Build the video processing engine: Design and implement encoding, decoding, and transcoding workflows that handle diverse video formats efficiently. You'll work extensively with FFmpeg for video processing operations, optimize builds for size and performance, and troubleshoot codec-specific issues across web and native platforms.
• Develop the cross-platform rendering engine: Work on our Skia-based rendering engine that runs across browsers and native runtimes. You'll build and optimize graphics pipelines using WebGPU, Metal, and WebGL, targeting both WASM builds and arm64 native platforms.
• Push the boundaries of browser-based video: Develop and maintain our WebAssembly infrastructure by compiling C/C++ codebases using Emscripten, optimizing for browser execution, and managing memory constraints. You'll leverage the WebCodecs API for hardware-accelerated encoding/decoding where available, with smart fallback handling.
• Integrate across platforms: Build and maintain our iOS integrations using Swift, ensuring video and rendering capabilities work seamlessly on mobile. You'll also integrate TypeScript APIs into our Angular web application to surface platform capabilities to users.
• Obsess over performance and reliability: Profile and optimize video and rendering workloads, reduce processing latency, minimize memory footprint, and improve throughput across our pipeline. Build observability into our systems to understand real-world performance and debug issues across the full stack.
• Work with people who care about craft: Collaborate closely with editor engineers to integrate video and rendering capabilities into the user-facing product. We value clear communication, thoughtful problem-solving, and code that will be maintainable in two years.

• Experience with graphics engines, Skia, or GPU programming (WebGPU, Metal, WebGL)
• Deep FFmpeg knowledge, codec expertise, real-time video pipelines
• TypeScript and web platform: WebCodecs, WebAssembly integration, Angular or similar frameworks
• Swift and iOS: Native iOS development, platform integration, media frameworks
• 5+ years of professional programming experience
• Strong proficiency in C or C++, with additional depth in TypeScript or Swift
• Experience with video processing (FFmpeg, GStreamer, libav) or graphics rendering (Skia, OpenGL, Metal)
• Working knowledge of video codecs (H.264, H.265, VP9, AV1) and container formats
• Understanding of cross-platform development targeting web and native runtimes
• Built for WebAssembly using Emscripten or similar toolchains
• Worked on real-time video processing, streaming, or graphics rendering
• Optimized for memory-constrained or GPU-accelerated environments
• Integrated native code with web or mobile platforms
• Built or maintained observability for complex systems
• Comfortable with asynchronous communication and clear documentation
• Able to context-switch across problem spaces (video, rendering, iOS, web)

• Equity options
• Unlimited PTO (we actually take it)
• $200/month wellness stipend
• Health insurance stipend
• Home office budget