Di Wen Email & Phone Number

Vancouver, British Columbia, Canada

Vancouver, British Columbia, Canada

May 2019 - Nov 2022: Build Shopify Functions from the ground up. Shopify Functions is a platform to provide extensibility for Shopify which allows 1st and 3rd party developers to customize the backend logic that powers Shopify. * Participate in various initial prototypes and explorations around WebAssembly* Lead performance exploration to conclude a solid trade-offs on the architecture* Build core service to manage the main business logic and expose API* Build and scale the engine to safely and efficiently execute WASM modules* Create a codegen tool around AssemblyScript to enable guest serialization for WASM modules* Work with Discount team to wrap the extensible discounts as the first API sets to release Shopify Functions* Tech stack: WebAssembly, Rust, AssemblyScript, Ruby, Hanami, Rails, MySQL, DDDMay 2017 - May 2019: Build Shopify Flow from the ground up. Shopify Flow is an ecommerce automation solution which then becomes the most recognizable feature for Shopify Plus.* Participate in product design and iteration to help launch Shopify Flow and further development* Instrument and monitor the system, take on-calls, handle incidents and conduct RCAs* Scale Flow engine 100x to handle the increasing volume of daily traffic and peak traffic from BFCM* Design a GraphQL context batch fetcher to solve bottleneck in messages processing and increase performance 30x* Design a schema conflict resolver to tackle the long-lived tech debt, which tracks, monitors and migrates the unversioned schema changes* Mentor intern and participate in team hiring* Tech stack: Ruby, Rails, JavaScript, GraphQL, EventMachine, MySQL, Kafka

Beijing, China

Umeng Analytics is the leading mobile app analytical platform in China. We implement data analysis and statistics Web products using Ruby on Rails.* Participate in product iteration over Umeng main site and admin system, which aggregates and displays analytical data through dashboards* Build Developer Center, a CMS system for developers to read online documents and download SDK packages* Build API & OAuth service, for third-party company to authenticate, authorize, and query data* Tech stack: Ruby, Rails, JavaScript, MongoDB, Redis, RSpec, RefineryCMS, Resque, Unicorn