Jason Liu

888 O'Farrell St APT W509 · San Francisco, CA 94109 · 5534 936 (529) · [email protected]

Life is short, and every day is a new hill. Embrace the climb and learn to love it. Be humble and compete with yourself.

Education

University of California, Berkeley

Class of 2019
B.A. Computer Science

Completed Coursework

Computer Science

• Assembly Language Programming
• Advanced Programming with C & C++
• Computer Security
• Structure and Interpretation of Computer Programs
• Software Engineering
• Operating Systems and System Programming
• Program Design and Data Structures
• Introduction to Database Systems
• Introduction to Artificial Intelligence

Algorithms

• Discrete Mathematics and Probability Theory
• Efficient Algorithms and Intractable Problems

Data Science

• Concepts in Computing with Data
• Principles & Techniques of Data Science

Experience

Software Engineer

DoorDash

• Backend Engineer in Merchant Team

July 2019 - Current
San Francisco, California

Software Engineering Intern

ULAB (Undergraduate Research Lab at Berkeley)

• Created interactive online Python tutorials with multi-users sharable Jupyter Notebook

• Established the student portal that supports secured login and dashboard using Flask Framework

• Integrated the student portal with Postgre SQL database supporting 1000+ entries

• Underwent the penetration test on pre-deployed Jupyter Notebook and successfully detected the critical vulnerability

July 2018 - Dec 2018
University of California, Berkeley

Lab Assistant (CS61B - Data Structure)

Department of Electrical Engineering and Computer Sciences

• Hosted mini-lectures and Q&A session for 40-50 students (9 hours/week)

• Explained Java programming, data structure, and dynamic programming (15 weeks)

• Assigned daily quizzes, gave personalized feedback, and mentored students on labs and projects

June 2018 - Dec 2018
University of California, Berkeley

Software Engineering Intern

Mujin Associate

• Designed words and voice suggestion model based on statistical analysis of speech dataset using Pandas

• Achieved 23% higher profit overall for instructors who followed the suggestion model (A/B tested)

Feb 2017 - Aug 2017
Seoul, South Korea

Skills

  • Python
  • Java
  • Git
  • HTML5
  • CSS

Projects

  • chAirBears2 (Python, Cisco WebEx)
    • 1st placed on the CalHacks 5.0: Cisco API Challenge
    • Detected the available seats and the number of people in the library using ImageAI, OpenCV, and YOLO3
    • Pipelined the statistics regarding seats, number of students, and library traffic to ChatBot and supported semi-real-time notification

    • Provided keyword-based trained ChatBot that notifies the seat availability of the libraries using Cisco WebEx API

  • Secure File Store System (Go)
    • Created Secure File Storage System that supports secured login, secure file storing and sharing
    • Securely encrypted files using CFB Encryption and guaranteed its integrity by HMAC
    • Guaranteed the secured file sharing using RSA encryption and signature scheme

    • Perfectly protected users' credentials and files against 50,000+ automated attacks

  • Bear Maps (Java, Maven)
    • Built a scalable Berkeley map that supports prefix matching search and navigation
    • Optimized the route selection by using A* search algorithm (improved the runtime by 53%)

    • Improved space and runtime complexity with prefix matching feature by using Trie

  • Verbal Clap (Python)
    • Suggested the optimal voice tone obtained from speech dataset trained by Softmax Regression

    • Provided the list of words for the better speech quality using Oxford Dictionaries API and script dataset

  • Yelp Maps Project (Python)
    • Predicted the restaurants' ratings based on the users' reviews using the Linear Regression and Yelp academic dataset
    • Visualized the rating distribution on the Google Maps using the Voronoi algorithm

    • Clustered the preferred restaurant distribution using the k-means algorithm

Interests

  • Traveling
  • Teaching
  • Cooking
  • Badminton
  • Mindfulness