Sophia C. Email & Phone Number

Designed and built a machine learning based stock trading system that traded $221mm worth of securities. - Trained and evaluated over 50,000 machine learning models, generating tens of billions of predictions. - Built a data pipeline for processing over a terabyte of data each night in the inference ETL across hundreds of jobs, generating over half a million features daily - Distilled the output of the ML system into dozens of simultaneous trading strategies to meet different product goals and constraints

- Traveled around the world for 6 months, learning how to mountain bike in the Himalayas, tandem biking across the Iron Curtain, dodging jumping cows in India, climbing in French forests, and figuring out just how far you can stretch a backpack’s worth of supplies. - Prototyped an apple picking robot using deep learning: https://www.youtube.com/watch?v=r5EZCJwRSfc- Attempted to ride across the country on an a mercurial tandem bike until COVID struck halfway through our honeymoon ride.

San Francisco, California, Us

As an engineer, my work is primarily centered around building interesting and highly performant algorithmic backend systems:- Implemented Uber’s first intelligent dispatching system, which was awarded two patents- Single handedly designed and implemented personalized destination recommendations, a major feature of our latest app release and the first thing users see in the app, which was awarded another patent- Built a metrics aggregation system that transformed a firehouse of all driver location updates that powered surge/dynamic pricing decisions- Rewrote and improved the performance and accuracy of our time estimates, a critical service of Uber.- Removed 40% of codebase while improving performance by 50% and deploys by 20x.- Moved from managing on the mapping to become a founding engineer on the UberFreight initiative and helped cultivate a highly diverse team of over 60% women engineers

San Francisco, California, Us

I helped found, grow, and manage a large division of Uber's mapping organization. After growing the routing and navigation team from 3 engineers to 24 engineers in 2 years, I wanted to return to engineering and became one of the founding engineers for the Uber Freight team.As a manager, my focus is on people and team happiness and leading a smooth and diverse team:- Responsible for building and maintaining one of Uber’s highest traffic systems, our routing engine that could handle half a million requests per second with a median response time of 2ms (https://eng.uber.com/engineering-an-efficient-route/) and for Uber’s in app driver navigation (https://newsroom.uber.com/a-new-navigation-experience-for-drivers/)- Delivered a global real time traffic system that had a less than two minute lag from driver location to routing engine update- Managed the maps routing team for two years and grew the team from 3 to 20+ members, including managing engineers and managers- Recruited and hired new grads, internal transfers, external acquisitions, senior engineers, and engineering managers- Oversaw engineering due diligence and transition of engineers from the acquisition of mapping company, DeCarta - Worked closely with over a dozen different teams to power their features and products with our routing engine, including UberPOOL and marketplace efficiency

Burlingame, Ca, Us

Worked on optimizing the personalization and effectiveness of retargeted ads via product recommendations and ad display layout and design.

Durham, North Carolina, Us

Worked as a teach assistant to introductory Computer Science courses for 7 of the 8 semesters that I attended as a student.

Durham, Nc, Us

Worked with Dan Ariely on Upside of Irrationality and other projects.https://www.amazon.com/Upside-Irrationality-Unexpected-Benefits-Defying-ebook/dp/B003JBHVZY

Mountain View, Ca, Us

Worked with the DoubleClick team on testing toolchains.