About Me

Zhicheng Wu(Gee-chan, Woo)

Columbia University
M.S. in Data-Driven Analysis and Computation, EE

University of Electronic Science and Technology of China
B.S. in Internet Of Things

PROFESSIONAL EXPERIENCE

Yahoo’s Push Notification Team

Software Engineering Intern

Summer 2019

• Built a web tool for the Push platform and its scalable REST based microservices (Undertow, Guice, JAX-RS, Netty, DynamoDB)

• Parallelized functional test and added different environment support (Kubernetes, Multithread, CICD)

• Developed tool’s features like permalink, rate limiting, authorization, autocompletion and query builder (React, Redis, Vespa)

CS 4111: INTRODUCTION TO DATABASES, CS 6156 Microservices

Teaching Assistant

Spring 2019 - Now

• Mentored students in relational model, SQL, Normalization, Transaction, Concurrency and Recovery (PostgreSQL)

• Designed a graph analysis course project using BigQuery, the course is free online at https://w4111.github.io

• Mentored students in implementing scalable web applications with Kubernetes, AWS, docker, asynchronous architecture, CICD

JD.COM INC. Drone Delivery Team

Software Engineering Intern

Beijing, 2016

• Designed a real-time health checking system for delivery drones by processing streaming data (Python, Flask, Kafka, Spark)

• Customized RTK-GPS driver to improve navigation accuracy

SELECTED PROJECTS

Linux Kernel Hacking

Operating System

Dec. 2018 – Feb. 2019

• Proc File System: Implemented an in-memory file system to dump processes information

• Weighted RR Scheduler: Developed an O (1), multi-core load balancing scheduler with CPU tread group affinity

• Android orientation synchronization System call: Built an Android thread-safe system call for orientation event trigger using Wait Queue, Spinlock, IDR

• Virtual Memory Inspector: Implement a system call to dump page table to user interface

Databass

Python-based Database SQL Engine for instructional purpose

Oct. 2018 – Dec. 2018

• Implemented SQL parser, compiler, executer and Selinger optimizer

• Supported SQL operation such as Project, Scan, Filter, Count, Offset, Limit, OrderBy

Tweet Stream Analysis System

Real-time Streaming Processing

Apr. 2019 – May. 2019

• Developed trend detection and sentiment analysis system based on streaming MapReduce (Kafka, Spark, NLTK, Hive)

• Visualized the real-time processed data with graph (D3.js, Flask, Firebase)

Cycle-Consistent Adversarial Networks

Unpaired Image Translation Model by TensorFlow

Mar. 2019 – Apr. 2019

• Built image generator, discriminator model using encoder, decoder and residual block transformer

• Implement image preprocessing pipeline, defined cycle loss, trained apple and orange model using GCP

Natural Language Translation

Spanish, English, Chinese and French translation Neural Network Model

Feb. 2019 – Mar. 2019

• Implemented text embedding, mapping, encoding, decoding (Keras, TensorFlow)

• Built the translation model with attention mechanism, evaluated with BLEU score

QALite

Social Learning Platform

Aug. 2018 – Oct. 2018

• Developed question posting system, comment system for both frontend and backend (React, PostgreSQL)

• Built microservices with RESTful API using AWS EB, Lambda, API Gateway, S3, CloudFront, Swagger, SQS, SES

Airlock

Embedded System
UESTC, 2016

• It is a Bluetooth lock for delivery packages sponsored by Chengdu Pangod Inc.

• This smart lock has AES-128 encryption and GPS tracking. It supported BLE Stack using TI CC2541. Patent No. 2016201342833

Miscellaneous
My Chinese name is: 吴志成.