We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
  • Hackerrank Home
  • Prepare
    NEW
  • Certify
  • Compete
  • Career Fair
  • Hiring developers?

Nan Dun

@krazyface

China

About

Current

Apple

Education

University of Tokyo

More about me

Hack hack

Badges

Problem Solving
CPP
Java
Python
Days of JS
Days ofStatistics
Sql
C language
Ruby

Verified Skills

Certificate: Problem Solving (Basic)

Verified

Certificate: Java (Basic)

Verified

Certificate: Python (Basic)

Verified

Certificate: Ruby (Basic)

Verified

Certificate: Python (Intermediate)

Verified

Certificate: Python (Advanced)

Verified

Certificate: Ruby (Intermediate)

Verified

Certificate: Java (Intermediate)

Verified

Certificate: C (Basic)

Verified

Certificate: C (Intermediate)

Verified

Certificate: C++ (Basic)

Verified

Certificate: SQL (Basic)

Verified

Work Experience

  • Platform Engineer

    Apple | August 2018 - Present

  • Software Engineer

    Quantcast | 2016

Education

  • University of Tokyo, Tokyo

    Computer Science, PhD | April 2007 - March 2011

  • University of Tokyo

    Computer Science, MS | 2005 - 2007

  • Peking University, Peking

    Computer Science, BS | 1999 - 2003

  • Blog
  • Scoring
  • Environment
  • FAQ
  • About Us
  • Support
  • Careers
  • Terms Of Service
  • Privacy Policy