Most recently, I was a Backend Software Engineer at Stainless, which generates best-in-class SDKs, documentation, and MCP servers from OpenAPI specs for companies like OpenAI, Cloudflare, and Anthropic. There, I architected incremental formatting for SDK generation that reduced P50 latency from 1.2 minutes to 3 seconds, which was instrumental in securing a major enterprise contract with Google. I also led an infrastructure migration from Cloud Run to Google Compute Engine, deployed OpenTelemetry instrumentation across the SDK generation stack, and migrated the Studio AI Assistant onto isolated Fly.io machines.
Before Stainless, I spent two years building a cloud-based time-travel debugger for JavaScript at Replay.io, where we orchestrated thousands of containers and hundreds of thousands of stateful Chromium processes to serve interactive debugging sessions. For more detail on either role, please see my resume.
My original field of study is classical piano, music theory, and composition. My introduction to music-related programs and computer art initially drew me to software. While you are here, consider listening to one of my favorite pieces (complete with commentary) by my favorite composer.
As a Firefox contributor in 2019-2020, I implemented a new type of breakpoint in the debugger.
The front-end code for watchpoints provides an interface for the user to add/remove a watchpoint from the Scopes pane. It then needs to tell the server about the new or deleted watchpoint. The client code also updates watchpoint data in the Redux store in order to immediately update the user interface with the watchpoint icon before the debugger is resumed.
video | merged code
The server code for watchpoints takes advantage JavaScript's native Object.defineProperty method
in order to make a call to pause the debugger each time a property on an object is set or read.
When a JavaScript array or object has over 100 elements, the front end presents them in groups. Watchpoints could not be added to any elements in these groupings before this fix. Watchpoints could also not be added to properties in prototype objects and native properties found on the window object.
merged codeWhen the debugger encounters both a breakpoint and a watchpoint on the same line, the expected behavior is for it to only pause one time for the breakpoint and then advance to the next line. This server patch checks the preceding pause reason and location before pausing the debugger for a watchpoint.
merged code