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 with 11 years of experience focused on infrastructure, software/network security, programming languages, and distributed systems, currently contributing to AWS Security Hub in Sunnyvale. He holds an M.S. in Computer Science from Columbia SEAS and has deep practical experience from threat engineering at Yahoo Paranoids to backend and systems internships. His academic work includes research on trustworthy mutable replay for security patches and teaching distributed systems topics like Paxos and MapReduce, reflecting strong systems and binary-level programming skills. Chengtian has built tools ranging from dark web crawlers and Neo4j integrations to wearable sensor prototypes and DHT/WebRTC browser systems, showing a blend of security, networking, and embedded experience. He combines production-focused engineering at large cloud and internet companies with research-driven rigor, often bridging developer tooling and operational safety. Based in the Bay Area, he brings both hands-on coding and a research mindset to hard infrastructure and security problems.
11 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 CollegeBachelor’s Degree, Computer Science, Bachelor’s Degree, Computer Science at Columbia 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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