Jack Cheung Email & Phone Number

San Mateo, Ca, Us

San Mateo, Ca

Menlo Park, Ca, Us

Meta Reality Labs - AR Productivity and Infra Team

San Francisco, California, Us

Built and managed the Ad Supply Quality org, consisting of two engineering managers, one technical program manager, and 20+ software engineers. Grew and protected hundreds of millions of dollars in advertiser demand through better ad measurement, stronger brand safety controls, lower ad fraud, and more accurate audience targeting.

San Francisco, California, Us

Managed a team of 10 engineers responsible for creating SureStream, Twitch’s Server Side Ad Insertion (SSAI) service. This system directly stitched viewer-targeted video ads into the live stream and recovered billions of ad opportunities each year that would typically be lost to ad blockers.

San Francisco, California, Us

Led three engineers to build Twitch’s ad metrics pipeline and data warehouse. Utilized Apache Airflow, Spark, and Redshift to extract, transform, and load billions of ad requests, impressions, and revenue metrics. Generated all ad business metrics for the entire company and performed all Twitch partner ad revenue share calculations.

San Mateo, California, Us

Provided technical guidance and mentorship to the entire engineering org (50+ engineers), including reviewing system design and architecture for every major feature across 25+ Storm8 games (12M+ daily active users).Led a team of five engineers to complete a company-wide transition from native iOS/Android to Unity. Designed and implemented the foundational client infrastructure, which was used as the base game engine of all future Storm8 games.Storm8 was aquired by Stillfront Group for $300M in Feb 2020

San Mateo, California, Us

Worked directly with company founders to create Loop Messenger, a messaging app and framework designed to allow real time chatting for Storm8 players. Led six engineers to design and build native iOS/Android clients, as well as a highly scalable Erlang backend.Led two engineers to build a cross promotion system that surfaced new Storm8 games to existing players. Responsible for driving 10+ Storm8 games into the Top-25 app store rankings, accounting for millions of organic app installs while spending $0 on external advertising.Led and built fullstack features for Storm8’s most successful games (Bubble Mania, Jewel Mania, Hungry Babies Mania, Frozen Frenzy Mania, Slots), accounting for over 120 million combined users.

San Diego, Ca, Us

Linux Kernel Team.Built an internal Android app used to improve device field testing and debugging by generating and automatically uploading kernel logs for analysis. Utilized by multiple teams across the company in San Diego, China, and India.Developed power-saving features for the Qualcomm Snapdragon processors by dynamically powering on and off sections of unused memory.Created an Android app that provided over-the-air system updates to test devices, allowing developers to automatically download and re-flash their devices.

Santa Clara, Ca, Us

Performance Infrastructure team.Worked on PerfGen, an advanced set of Perl scripts that handles testing of chips all the way from simulation to silicon. Re-designed large sections of this script to increase efficiency and reduce wasted operations.

Santa Clara, Ca, Us

Performance Infrastructure team.Worked on PerfGen, an advanced set of Perl scripts that handles testing of chips all the way from simulation to silicon. Upgraded the script to use object oriented Perl. Improved the modularity and readability of code and reduced runtime length by several minutes.

Ms, Electrical And Computer Engineering

Bs, Electrical And Computer Engineering