Chen Dong's Email Addresses & Phone Numbers

Software Engineer III @ MediaMath Greater New York City AreaSoftware Engineer II @ MediaMath • Bid Engine redesign (C++ 11/14, boost asio, future and promise)• WURFL integration (Go service)• Fee System redesign (Avro, Spark)• New Brain integration as microservice From May 2017 to March 2019 (1 year 11 months) 4 World Trade Center 46th Floor, New York,...

Software Engineer III @ MediaMath Greater New York City AreaSoftware Engineer II @ MediaMath • Bid Engine redesign (C++ 11/14, boost asio, future and promise)• WURFL integration (Go service)• Fee System redesign (Avro, Spark)• New Brain integration as microservice From May 2017 to March 2019 (1 year 11 months) 4 World Trade Center 46th Floor, New York, NY 10007Software Engineer in Test II @ MediaMath • Develop a generic multi-thread parallel test framework with Docker Compose and reduce the total running time of Bidder regression tests from 70 mins to 2 mins• Develop new test framework for Bidder modularization (BidFlux, BidEx and BidEngine)• Develop test framework for UDB Loader (C, single thread, Mongo), UDB Shield (C++, Mongo), and RushIO (Python, PostgreSQL)• Develop test framework for new UDB ETL (RabbitMQ)• Add pacing and brain optimization tests using time machine and frequency tests for BidEngine• Add highly distributed system tests for BidFlux, BidEx and BidEngine, including multi-level LRU cache, sharding, negative cache ttl, load balancing (Round-robin, routing by hashed user id)• Develop a generic multi-thread mock server with LRU cache for testing, two basic usages including echo back the upstream query from application and return mock response to the application• Research possibility of developing a framework to easily write multi-thread tests to be able to catch crashes in race condition• Dockerize all applications and tests• Integrate GitHub pull request plugin so that every PR and latter commits will trigger running regression tests on Jenkins automatically• Improve documentations and add a Vagrant file to help new hires quickly set up dev environment• Handle support tickets and communicate with clients, supply sources and 3rd party data providers• Work on some dev tickets and debug code with GDB• Develop a canary system in compliance with SOC 2 and potentially moving from CI to CICD, including automating deployment scripts with Go server, building a staging environment, pulling stats from Graphite and adding acceptance criteria for monitoring and phased deployment, production issues detection with Cabot alert and automatic rollback, moving from Jenkins to Bamboo and adding a web UI From August 2015 to April 2017 (1 year 9 months) 4 World Trade Center 46th Floor, New York, NY 10007Software Engineer in Test I @ MediaMath • Member of the Core Development team for TerminalOne Marketing Operating System, a Demand Side Platform (DSP) for Real-time Bidding (RTB), also known as the Bloomberg terminal for marketing• Work in Scrum environment with daily review and biweekly Sprint/Release cycle• Collaborate with PM, Product and Core Engineering team to define and review requirements • Work with Support, Data Warehouse and TechOps to address any issue in production• Use Git (GitHub) for source code management, Jenkins for continuous integration and Jira for issue tracking• Work in Linux environment• Develop test framework in Python and C++ for Bidder (C++), Counter Server (C++, MongoDB) and Serializer (Perl, PostgreSQL) • Develop test framework in Python and Phantom.js for IDM (Redis Cluster), DMP (Cassandra), Pixel Server (Lua, Node.js), PiPP (Node.js) and MathID (Node.js) Server• Develop Load testing framework for Bidder on EC2• Develop Integration testing framework across UI, API and Core using Selenium and SOAP UI on OpenStack with Docker• Integrate test frameworks with CI to run regression tests before each release and generate test reports• Sign off release, deploy build to data centers with Ansible and monitor performance in Grafana From December 2013 to July 2015 (1 year 8 months) 1440 Broadway 21st Floor, New York, NY 10018Software Localization QA Engineer @ TransPerfect • Prep different types of source files into TXML format for localization • Extract the content using Wordfast or command line AP tool with Property file and regular expression• Analyze TXML files using Excel VBA and prepare quote budget sheet• Perform testing for localized website and application software From October 2013 to December 2013 (3 months) 3 Park Ave 39th Floor, New York, NY, 10016QA Automation Analyst @ Wireless Generation • Participate in the product lifecycle from design to commercial release• Develop and implement test strategies, test plans, standards and processes• Deploy test environment and on-site troubleshooting• Develop test cases and collaborate in the development of automated test scripts for our education products on Android tablet• Work with technical support, enterprise customers and software engineers to address product scalability, usability, reliability, functionality, and performance-related issues• Write shell scripts and SQL queries to verify customer reports• Write and maintain multi-browser test automation codes in JAVA using Selenium RC/WebDriver/Grid• Documentation for the release note, troubleshooting guide and other strategies From July 2012 to October 2013 (1 year 4 months) 55 Washington Street #900, Brooklyn, NY 11201Graduate Assistant @ Polytechnic Institute of NYU • Design a mobile WiMAX receiver to capture WiMAX signal, take samples, perform FFT, plot spectrum and calculate multiple parameters according to IEEE 802.16e protocol• Store the results into OML database and make the code running on Orbit testbed with Socket API• Build the systems using Software Defined Radio (GNU Radio and USRP) in Ubuntu and write codes in C++ and Python• Modify Intel WiMAX Linux driver to adjust ARQ window size and fix isusb problem in C++• Write Ruby test scripts and run experiment on OML back-end server• Write Ruby codes on OML server to locate each device that uses OML nodes to do experiment, calculate the distance to the WiMAX transmitter and other propagation parameters such as signal strength, path loss, etc. Paper: Chen Dong, Fraida Fund and Prof.Thanasis Korakis, “A Framework for Multidimensional Measurements on an Experimental WiMAX Testbed”, IEEE Sarnoff Symposium, May 2012. (Submitted)Chen Dong, Fraida Fund and Prof.Thanasis Korakis, "A Framework for Multidimensional Measurements on an Experimental WiMAX Testbed", IEEE TRIDENTCOM 2012. (Submitted) From February 2012 to August 2012 (7 months) Wireless Implementation Testbed (WITest) LaboratoryResearch Assistant @ Polytechnic Institute of NYU • Detailed simulation comparison of Filter Bank Multicarrier (FBMC) techniques (FMT, CMT and SMT) with OFDM/Filtered-OFDM in Power Spectral Density (PSD), Bit Error Rate (BER) and Peak-to-Average Power Ratio(PAPR) in MATLAB• Develop a new iterative algorithm to design ISI and ICI free Nyquist prototype filter for FBMC, with ISI and ICI calculation after each iteration• Develop a new companding technique to reduce PAPR in SMT From May 2011 to May 2012 (1 year 1 month) Center for Advanced Technology in Telecommunications (CATT)Graduate Assistant @ Polytechnic Institute of NYU • Project 2: Full-duplex communications on the same frequency with 2X2 MIMO and interference cancellation• Use USRP2 with GNU Radio and write codes in Python (GNU Radio modules) and C++ (Retrieve the amplitude and phase information of signal and perform interference cancellation algorithm)• Measure isolation between the TX/RX and RX2 ports on USRP2 daughterboards • Test codes with enhanced antennas From September 2011 to December 2011 (4 months) Wireless Communication LaboratoryGraduate Assistant @ Polytechnic Institute of NYU • Project 1: Implementation of proposed Cooperative Multipoint (CoMP) scheduling algorithm in Co-operative communication system (1 source, 1 relay and 1 destination, QPSK) with Time Devision Duplexing (TDD)• Use USRP2 with GNU Radio and write codes in Python (GNU Radio modules) and C++ (Scheduling algorithm)• Use MATLAB to calculate Bit Error Rate (BER) with transmit and receive samples and plot BER vs. Eb/N0 curves From January 2011 to June 2011 (6 months) Wireless Communication LabQA Engineer @ Jesta Digital (formerly Fox Mobile Group) • Develop and implement test strategies, test plans, standards and processes• API Regression, Bace Organic WAP/WEB Smoke, Device and Release QA for Bitbop on RIM, Android, iOS and WP7 using HP Quality Center• Work with product team to address product scalability, usability, reliability, functionality, and performance-related issues• Work with developer team (front-end and back-end) to open, validate and close tickets• Write SQL queries to verify custom reports on a daily basis using MySQL Server• Build prototype emulator for test automation on the Client side using Python• Write scripts to test API calls(GitHub, svn) on the proxy server as preparation for company's new framework using Ruby on Rails• Attend weekly QA meetings with developer and QA teams in London, Berlin and Montreal• Complete two company projects: 1. Handsets Managing System using HTML, XML, CSS, JavaScript, AJAX and PHP 2. API Test Automation Framework for data validation on the server side with multi-thread support to improve efficiency using Curl/RESTClient Tool and JAVA(JDBC, XML and JSON Parser, BFS, DFS, HashMap, Executors, Synchronized) in Eclipse From July 2011 to January 2012 (7 months) 75 Broad Street 23rd Floor, New York, NY 10004Technical Support Engineer Intern @ NEKO International Computers, Inc. • Cisco and Juniper server maintenance• Set up firewalls • Participate in a NAV open-source project for network and phone monitoring using JAVA and python with JBoss/Drool From May 2011 to June 2011 (2 months) 12 W 32nd Street,Suite 601,New York,NY 10001Financial Analyst Intern @ Quasar Trading • Switches and Routers troubleshooting• QA for company's financial software• Financial modeling and strategy build-up using MATLAB• Database maintenance using MySQL From May 2011 to June 2011 (2 months) 2 Wall Street, 8th Floor, New York,NY 10005Project Member @ East China Universtiy of Science and Technology • Joined the NIEP(National Innovative Experiment Project for Undergraduates conducted by the Ministry of Education) supervised by Senior Electronic Engineer Guorong Ma• Worked with three classmates to design a MP3 player using ARM Cortex-M3 based STM32 microprocessor• Used Protel 99 and Keil c51 to do PCB layout and write low-level embedded C and assembly codes for LCD display/driver and SD card data transmission in FAT32 format • Awarded 3rd prize in Shanghai division From December 2008 to December 2009 (1 year 1 month) 130 Meilong Road, Shanghai, China 200237Software Test Engineer Intern @ Venus Software Corporation • Build up financial models and strategies for High-frequency Trading (HFT) using MATLAB• JAVA JUnit test with Struts framework for a Japanese Bank Credit Card System project held by NTT using IBM Websphere Studio and Oracle database From July 2009 to August 2009 (2 months) 456 Hongcao Road, Shanghai, China 200233