I’m a tech lead for payouts at Square. After a seller makes a sale, our team ensures that their money is deposited into their bank account in an accurate and timely manner. Every year, we are responsible for paying out over $XXX billion dollars to millions of sellers across the world, including sellers in the United States, Canada, the UK, Australia, and Japan. We also ensure that each seller’s money can be moved near-instantly to other internal balances for spending, such as Square checking and savings accounts.

In this capacity I lead a team of 8, and provide guidance to a broader banking infrastructure team of almost 40. In my tenure at Square, I have led or assisted with multiple initiatives to improve the reliability of payouts, increasing its availability to 99.999 in 2022. I have also led or assisted with the development of many features that provide more sophisticated accounting of funds, and faster and easier access to money belonging to sellers.

Since starting at Square, I am the #2 committer to the Java repository by lines of code, and #3 by number of commits.

• Managing a team of 8 developers who develop services providing data access and business logic for core data models in the Homes business, including listing, review, and user data.

• Working with product teams "up the stack" in the Homes business. Ensure that our services scale the Homes business and power the big bets from product.

• Working with infrastructure teams "down the stack" including the storage, observability, and data infrastructure teams. Ensure that these teams deliver impactful, high-quality solutions for all of engineering.

• Recruiting and improving the processes for working with both product and infrastructure.

• Through February 2017, led development of the listing data service, scaling it to become the highest QPS service at Airbnb. Took ownership of data and business logic previously owned by our monolithic Rails app.

• Through June 2017, led development of the reviews data service, again migrating ownership from our Monolithic rails app.

• Strong technical leadership, such as documenting best practices established by the team, giving multiple accompanying presentations to engineering, and one-on-one mentorship to junior engineers.

• Developed key infrastructure of the Khan Academy Android app with over 10,000,000+ installs. Included the networking layer, offline video/content manager, article renderer, and primary data models.

• Developed parts of the Khan Academy iOS app through which learners submitted over 50,000,000 problem attempts in 2015. Implemented the native video player, infrastructure for representing and loading exercises, the harness for rendering these exercises, and productionized the handwriting recognition widget.

• Reviewed code by colleagues, mentored three interns, and promoted documentation internally.

• Modernized and productionized the backend, increasing its test coverage from 0 to over 90%.

• Developed Burner for Android. It has over 1 million installs, and Ars Technica, Lifehacker, and Gizmodo covered its release.

• Open sourced Iron Cushion, a CouchDB benchmark and load test.

• Developed anti-DoS measures, an abuse monitor, and a real-time stats dashboard using Redis.

• Complete handling of on-call duties and server administration.