Working on building amazing people + company search. We're hiring!

Exploring various startup ideas (see my blog for details: https://timsu.org)

Tandem (YC S19) is a virtual office for distributed teams backed by Y Combinator and a16z. See who's around, talk and collaborate in one click. I led a team of 15 building real-time distributed backend in Elixir, high-performance clients built on shared code in Typescript, React, Electron and React Native, media servers using WebRTC / Go. We helped our users spend over 2 million hours talking to their teammates over the first few years of the pandemic.

Engineering director for new products in Search and Conversational Assistance. I led teams building conversational bots for Yahoo News, Weather, and Finance (1M DAU), mobile development for Yahoo Answers Now, and more, creating a fast-paced product discovery process exploring opportunities for AI-driven assistance. Our team also designed and managed a cross-platform content rendering framework for Android, iOS and web. I spent half of my time on product and half on engineering (mostly Scala).Previously, engineering manager for Yahoo Aviate, Messenger, and Groups, providing cross-functional leadership, creating efficient engineering processes, building high-functioning teams and solving technical challenges.

Created Astrid, the collaborative task manager for Android, iOS, and web, a product loved by over 5 million worldwide. Provided leadership in all stages of the product lifecycle, including shaping the vision, designing the architecture, UI / UX, technical development, support, and ops. Astrid was acquired by Yahoo in 2013.I led development for Android & iOS clients, Javascript frontend & Ruby backend, developing scalable and reusable libraries for making software development and testing easy. We open-sourced several components built in-house, including a database management layer, dependency injection, AAC encoding, load testing, and custom A/B testing and analytics infrastructure for running rapid client and server-side experiments that continued to be used at Yahoo post-acquisition.

Led a team to build Palantir Finance's deployment, monitoring and test automation efforts, including performance monitoring and tuning, automated jobs, installation configuration management, systems monitoring, and logging in a distributed environment. I developed reusable components for capturing vital statistics for JVM applications. I also managed a 10,000-line ant system, where I built distributed integration testing and other fun release engineering things.

Designed software and hardware for embedded devices designed for long-term deployments in extreme environments, including hand-held frequency scanning and visualization, soft real-time scheduling system for embedded Linux, satellite file transfer system, and more, using C and Python on FPGA, ARM7, and AVR microprocessors.