Chengtian Xu
Software Dev Engineer II at Amazon Web Services (AWS)
Sunnyvale, California, United States
Summary
👤
Senior🎓
Top SchoolChengtian Xu is a Software Development Engineer II at AWS, based in Sunnyvale, CA, bringing 10 years of experience building secure, scalable infrastructure and distributed systems. His focus spans infrastructure, software/network security, programming languages, and distributed systems, with hands-on work in AWS Security Hub and Yahoo Paranoids' threat engineering. He blends industry work with research, including developing a mutable replay framework for security patches and modifying Linux rr for patch validation. His project portfolio includes building a peer-to-peer browser-based social network (Common Green) using Kademlia and WebRTC, plus wearable sensor research and Arduino-based data pipelines. He holds an MS in Computer Science from Columbia University SEAS (class of 2018) and has taught distributed systems at Columbia, with earlier studies in CS/Math at UC Berkeley and other programs. Known for turning complex security and distributed systems challenges into practical, auditable solutions, he remains passionate about security, languages, and scalable cloud-native architectures.
10 years of coding experience
5 years of employment as a software developer
Mathematics and Computer Science, Mathematics and Computer Science at UC Berkeley College of EngineeringBachelor’s Degree, Bachelor’s Degree at Bates CollegeColumbia University in the City of New YorkHigh School Diploma, High School Diploma at Zhenhai High School, Cambridge Center
English, Chinese
Github Skills (15)
data-structures8
dynamic-programming8
algorithms6
computer-science6
identity5
spring-boot5
matching3
service-management3
identity-management3
nodejs2
javascript2
webapp2
regular-expression1
programming-language1
state-machine1
Programming languages (3)
Github contributions (5)
cxu2/cxu2.github.io
May 2017 - Apr 2019
Contributions:27 pushes, 2 branches in 1 year 11 months
cxu2/dotfiles
May 2017 - Feb 2020
Contributions:5 pushes, 1 branch in 2 years 8 months
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