Video infrastructure - encoding fabric

Display ads infrastructure: High-throughput services powering Google’s ads lifecycle

• Designed a static analysis tool that parses the ads codebase using graph algorithms and generates annotations to help developers understand when code will execute

• Developed a similar tool that alerts developers to erroneous ads framework usage (such as data dependencies declared but never used)

• Authored a comprehensive beginner’s guide to clang’s abstract syntax tree libraries to help Google engineers jumpstart their static analysis projects

Environment: C++

Real-time monitoring: Tools and infrastructure supporting billions of time series data streams

• Designed a search ranking and prediction feature, successfully auto-completing 30% of user queries

• Implemented new operations on time series data, allowing succinct queries by metadata instead of regex

Environment: C++, Hack (PHP), Python, Javascript

Tagged and hi5: Social media applications

• Designed a de-duplication pipeline and cleanup task in PHP for 1.3 billion photos in order to cut storage requirements by 30% and ease the transition to cloud storage

• Unified and refactored several image processing modules to eliminate redundant metadata, reduce code complexity, and improve cache efficiency

Environment: PHP

Noom Coach: The leading healthy lifestyle application for mobile platforms

• Implemented web sign-up flows in Django and Wagtail, reducing web purchase drop-off rates by 50%

• Expanded the internationalization of the coaching dashboard to accommodate for multilingual usage

• Created dashboard components in React to manage users and their data

• Developed a report generation tool in Python to summarize patient data for a pilot study on eating disorders

Environment: Javascript, Python