Bei Zhang (张备)

ByteDance Inc. Mountain View, CA

• Lead Software Engineer, Risk System 04/19/2021 - now

  • As the initial member, built a risk system team from scratch. The team grew from 1 to 12 as of Aug 2022.
  • Built, migrated, and maintained risk systems used by TikTok.
  • Built visualization and data analysis tools for risk analysis and machine learning.

Shape Security Mountain View, CA

• (F5) Architect I 01/20/2020 - 03/01/2021

  • Architected next generation microservice based traffic engine.
  • Integrated Shape's technology with F5's infrastructure.
  • Architected a cross-geolocation, low latency rate limiter service.

• Distinguished Software Engineer 10/2019 - 01/2020

  • Architect next generation microservice based traffic engine.

• Principal Software Engineer 08/2018 - 10/2019

  • Lead the machine learning team.
  • Lead a team to work on Policy Composer.
  • Lead a team to work on BeiWatch.
  • Invented new countermeasures (patents pending).
  • Worked on the execution engine of DEX. Created a bytecode compiler for DEX.

• Senior Software Engineer 01/2014 - 08/2018

  • Architected the main protection / traffic processing engine called Pegasus.
  • Invented a DSL for configuration called DEX.
  • Invented a mixin-based programming language / tooling called Policy Composer.
  • Created a traffic volume based alert system call BeiWatch.
  • Worked on web related compilers and analysers.
  • Created a token stream based content modification tool SALT.
  • Improved the engineering process in general.
  • Analyze attack data

Google Inc. Mountain View, CA

• Software Engineer II Chrome Team 12/17/2012 - 01/17/2014

  • Member of the core Chrome Packaged Apps team.
  • Introduced the multicast socket API.
  • Significantly stabilized the USB API. Refactored the USB API backend of Chromium to fix several legacy design issues.
  • Created several Chrome Packaged Apps examples

Sencha Redwood City, CA

• Software Engineer Sencha Touch Team Apr. 2011 - Dec. 2012

  • Researched on algorithms for industrial-level high performance charting system runnable on touch devices.
  • Based on the research, designed the next generation graphic engine of Sencha Touch.
  • Maintained SenchaLab projects Raphäel, JavaScript InfoVis Toolkit and PhiloGL.

Microsoft Protocol Engineering Team Beijing, China

• Dev Intern 07/2010 - 10/2010

  • Worked on OPN Language.
  • Standard library for a new language called OPN as well as its test cases.
  • A simple OPN Editor, with Code completion abilities.

• Dev Intern 04/2009 - 09/2009

  • Worked on SpecExplorer. SpecExplorer was a Model-based Testing plugin for Visual Studio.
  • Created a State Comparison user interface, including a text diff algorithm.