This is Ziyang

I worked as a backend engineer at Safety & Risk team at Uber. I am grateful that we were empowered as interns to work on a few projects and go through the entire process from ideation to execution on impactful new features, which will soon be released.

In this internship, we helped Little Caesars design a pizza quality assessment tool. We introduced an interactive internal website prototype that allows employees to upload pizza pictures and obtain assessment feedback of pizza quality. The website runs Machine Learnings model in server, with accuracy of 93% on pizza topping spread and 97% on clean crust.

Jottful is a local startup company at Ann Arbor. It helps small business build and manage websites. In my internship, I help Jottful establish a financial model projecting capital expenditures and burn rates to ensure its seed-stage budget fluency. Meanwhile, after analyzing 500+ companies and 40K+ potential client, my team helped Jottful build a customer acquisition channel, increasing its customer size by 300% in 2 months.

In high school, I recognized the potential needs of peer tutoring for high school students. After graduation, I founded Ciel, the first peer tutoring company in my city. It fostered an interactive studying environment besides traditional classroom for high school students. I fundraised $4,000 in 10 days, employed 18 tutors, and promoted team cohesiveness. Ciel achieved $10,000 monthly revenue in 2017 summer program

While making his annual deliveries, Santa slipped up and scattered presents all over a nearby mountain! Santa has dropped the ball (and the presents) and it's up to you finish the job. Jump, glide, and teleport with your magic snowball in this snowy platformer as you navigate treacherous terrain to find the lost presents. Can you save Christmas?

In this project, I did a web Instagram Clone. I used ReactJS to developed front-end and generated RESTful API with Flask to allow AJAX calls from the front-end. Meanwhile, I stored hashed user credentials using sqlite3 and employed Flask-Session for users to register accounts and log in/out.

This is a clone of simple and funny Slither.io game, using Phaser game framework and JavaScript. It showcases physics collisions and organization concepts of the game without implementing the multiplayer server aspect. A couple of cloned features are: shadows and interactive eyes, mouse and arrow-key control, speed up with spacebar, death from collision and random food.

This is a project of my school course, and it's the first embedded system project that I have done! The goal is to make a robot that can scan around, navigate through field of obstacles, and approach max light source. I assembled servo, H-Bridge, light sensor, and ultrasonic sensor on microprocessor. Then I used C to program the robot.

In summer 2019, I self studied Machine Learning. After that, I thought I should use this technology and do something interesting. I am a fan of history. I love looking at old pictures, while imagining them in colorful. So, one thing that instantly came to my mind is to recover the black & white images. I read through about 5 papers, finding the best model and tuning parameters to minimize loss function. Finally, I constructed a model composed of conv, ReLU, BatchNorm, and fusion layers.

Courses: Data Struct & Algo, Computer Org, Programming Language, Operating System, Embedded System, Computer Networks, Game Dev

Skills: C/C++, Python, Java, Golang, JavaScript, Scheme, HTML, CSS, React, Flask, git, bash, AWS, Kafka, Verilog