Junchen (Jack) Zhang Email & Phone Number

Menlo Park, Ca, Us

Reality LabsCodec avatars

Menlo Park, California, Us

• Worked in Crypto team (Python, Django, Kafka, Postgres,Kubernetes) and Order Routing team (Go, FIX).• Owned major parts of crypto backend that supports crypto trading,accounts, settlements, restrictions, firm accounts, UI; mentoredseveral engineers, go-to person for SEV/questions• Owned design and implementation of Crypto Learn and Earn,launched 3 lessons, millions users have claimed rewards. Leadengineers, designers, contents, PM, QA. Presented on all-hands.• Drove design and implementation of a new brokerage product; spinup a new service, owned FIX connection and translation to a newvenue, and a mock venue platform for internal testing• Owned major component (settlement) of Crypto Europe launch• POC for regulatory/fraud restrictions, owned launching cryptobusiness in Nevada, helped to launch wallets• Drove new crypto coins listings, including USDC, SHIB, etc.• Owned setting up a Trust fund for Robinhood Crypto Entity• POC of server driven UI on crypto tabs on mobile and web• Service loadshedding, preparation for IPO

Mountain View, Ca, Us

- Worked with Display Ads Serving/User Identity team- POC for ID links storage and service that links IDs- Lead two engineers on cross-team collaborations, designs, implementation (C++), testing, experiments, monitoring, and launch of consolidating user ID linkage collection/consumption (online and offline jobs) for all Display Ads (20M+ QPS) to a unified library, and migrated to faster storage system- Owned compliance changes to Europe’s ePrivacy regulation on third party cookie handling given a tight deadline- Owned service for fetching user ID in ads serving/conversion/click/view, modularized stack and increased engineer’s development velocity, onboard new requests from Youtube- Headed browser analysis/tests that caused impact to Ads landscape, reported to eng, product, finance- Added security token to logging system to eliminate impersonation

- Worked with the Data Infrastructure team- Built a cluster capacity projection application in Python- Predicted namespace moves to balance capacities

Mountain View, Ca, Us

- Worked in the Go language team and added multiple features to the Godoc- Discover and display package relationships through co-imports using data mining techniques- Find important concrete types for each interface by doing type analysis in MapReduce- Added documentation tooltips- Display pending and recently submitted changelists and bugs

Palo Alto, Ca, Us

• Worked in the advertising team and remodeled the data pipeline to reduce processing time• Full-stack development of an internal tool utilizing Hadoop MapReduce that ports raw data into HDFS on a cluster• Developed a client side metrics Javascript on Amazon.com that tracks user behaviors on ads• Aggregated user behavior data with Hive queries, visualized for comprehensive analysis

Waterloo, Ontario, Ca

• Porting a main-memory database management system to common lisp • Worked on two compilers that convert a query-like language that describes relational database to C

Worked as a developer who mainly did web development for CMA.Built the mobile version of the LeadingIndicator website : http://m.leadingindicator.ca/.Built a URL redirect web application.Built a DNN module.

Markham, On, Ca

Independently developed a web application that allows inspectors to inspect properties virtually. Use Google Map API.Currently being used by the company.

Bachelor’S Degree, Computer Science And Business

Bachelor Of Business Administration (B.B.A.)