Projects

At Column Tax

• Iris: our AI tax development agent (how we built Claude Code for turning tax law into software)
• TaxCalcBench: a first-ever benchmark for evaluating AI’s ability to calculate tax returns
• Column Tax's “secret” master plan to automate tax filing (just between you and me)

Other

• ReclaimIQ: a service that made it much easier to reclaim Unclaimed Property that's been handed over to the government (over $55 billion in the US)!
• TopTweets.by: go to TopTweets.by/@username to easily see someone's popular tweets.
• Sesh: a way for engineers and designers to train more like athletes.
• Sludge: an app to reclaim the time we spend on social media and ensure that time actually aligns with our long-term goals.
• SelfDriving.fyi: a comprehensive list of every company working on autonomous vehicles. You can listen to me talk about this project on this podcast.
• Detailed notes on the book Designing Data-Intensive Applications and an associated Anki deck.
• CarCraft: Waymo's simulated world for testing self-driving cars.
• Some things I launched at Pioneer.
• InnerTube: YouTube's first-party API for iOS/Android/Web/TV.
• Udacity's first public API (here's some ancient documentation I wrote).
• The Edmunds.com API and associated wrappers.

Even older

Some projects that are even older:

• Surge Pricing as a Service: a project at YC Hacks 2014 to bring surge pricing to industries beyond ride hailing.
• College Price Index: a hackathon project at MHacks V to calculate a "consumer price index" for college students using real Venmo data.
• ReviewWithUs: a hackathon project that won "Best Hack That Makes Students' Lives Better" at PennApps Fall 2013.
• TextYak: a take on the college fad app YikYak where you could only post via SMS.
• Verilog Minesweeper AI: an AI written entirely in the Verilog HDL that could solve ~80% of minesweeper boards.