Zeling Feng
Software Engineer at Google
Sunnyvale, California, United States
Summary
🤩
Rockstar🎓
Top SchoolZeling Feng is a systems-focused software engineer with 11 years of experience, currently building networking and kernel-level infrastructure at Google from Sunnyvale. He blends system programming and functional programming interests, with hands-on work on Fuchsia's Netstack3 in Rust and kernel/networking contributions in Go/C++ for gVisor. His gVisor contributions improved TCP reliability and test coverage—adding PAWS testing, IPv6 extension header handling, and TCP options support—highlighting deep protocol-level knowledge and a test-driven approach. Educated at Fudan and Brown, he has a history of low-latency and systems work from algorithmic trading to face-platform engineering, and prefers solving subtle correctness and interoperability challenges that often go unnoticed.
11 years of coding experience
1 year of employment as a software developer
Bachelor of Science, Computer Software Engineering, Bachelor of Science, Computer Software Engineering at Fudan UniversityMaster's degree, Computer Science, Master's degree, Computer Science at Brown University
Github Skills (8)
go10
networking10
tcp10
testing10
container9
docker8
linux8
dockers8
Programming languages (7)
Github contributions (5)
google/gvisor
Apr 2020 - Dec 2022
Application Kernel for Containers
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:66 commits, 14 comments, 19 issues in 2 years 8 months
Contributions summary:Zeling primarily contributed to improving the `gvisor`'s TCP implementation, focusing on test accuracy and reliability. They corrected an issue in a TCP test regarding window size and made several improvements to packet impact tests by handling OTW Seq segments and adding support for TCP options and IPv6 extension headers. The user also introduced and tested PAWS (Protection Against Wrapped Sequence numbers) mechanism, demonstrating a deep understanding of TCP protocol.
containerskernelseccomplinuxsandbox
zeling/chess
Nov 2017 - Jun 2022
a chess platform for agents
Contributions:3 PRs, 26 pushes, 1 branch in 4 years 7 months
chess-engineagentsmachine-learning
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