Henry Zelenka is a Senior Software Engineer in San Francisco with 10 years of experience building high-performance web UIs and shipping user-facing features at scale. At Snowflake he led frontend efforts on Snowsight, delivering measurable performance gains like halving p75 LCP and cutting the bootstrap bundle size nearly in half, and helped architect pagination and modular TypeScript project references. Previously at Zeus he drove revenue-impacting work—implementing promo codes that generated $1.3M in lease revenue—and built pricing tools to optimize occupancy. He combines strong front-end engineering chops with product-minded thinking, enjoys fostering inclusive teams that ask "why," and has a knack for developer-experience improvements that reduce friction for large codebases.
10 years of coding experience
5 years of employment as a software developer
Bachelor of Arts - BA Double Major: Mathematics and German Minor: Economics, Bachelor of Arts - BA Double Major: Mathematics and German Minor: Economics at Georgetown University
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Henry Zelenka - Senior Software Engineer (IC3) at Snowflake