Summary
David Zbarsky is a software engineer and operator with 4 years of professional experience who blends product-minded engineering with deep systems expertise, currently working as a Token Consumer at OpenAI. A Wharton and Penn Engineering dual-degree graduate, he has a track record of scaling backends and teams—from founding Clearstep and driving it to $1M ARR and enterprise customers, to rebuilding Vise’s backend for 1000x portfolio construction performance. At Dropbox he led cross-cutting infra projects that cut costs, sped queries, and removed millions of lines of dead code, and he has hands-on experience shipping reliable, secure systems for large customers in healthcare and finance. He’s comfortable across the stack and in leadership roles: hiring and mentoring engineers, instituting testing and reliability practices, and spinning up ML teams. Known on GitHub as a “Technology Wrangler,” he pairs pragmatic product judgment with low-level performance tuning and a history of shipping measurable improvements. Notably, he often focuses on operational maturity—fuzzing, regression on production data, and test-driven reductions in toil—that keep ambitious systems running.
4 years of coding experience
10 years of employment as a software developer
Bachelor of Science (BS) Economics, Bachelor of Science (BS) Economics at The Wharton School
Bachelor of Science (BS) Computer Science, Bachelor of Science (BS) Computer Science at University of Pennsylvania
English, Russian, French