* Built a survey-buying API to acquire survey respondents from partner companies. Identified and sold partners on building integrations to help become (probably) the world's largest buyer of consumer surveys.

* Created a novel ETL platform for ML systems that uses code-and-data based caching to cut compute costs substantially.

* Designed new survey mechanisms for measuring attention to ads, classifying occupation and education data.

* Led data engineering for the Education Search vertical team, which creates education-related features on Google Search.

* Negotiated and managed data partnerships that provided Google with Indian education data.

* Launched features with millions of DAUs under tight deadlines including math formulas and live CBSE exam results.

* Created a project-based learning onboarding program for Google Cloud new hires, used by thousands of Googlers.

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* Built realtime ad auction systems and auto-bidders for Yelp advertisers.

* Migrated Yelp's entire ads codebase from an on-prem segment of a monolithic webapp to a separate service running on AWS.

* Identified and implemented a number of ad targeting optimizations worth millions of dollars.