Helloworld
Developer at ITHelloworld
China
Summary
👤
Senior🎓
Top SchoolHelloworld is a seasoned developer based in China with nine years of professional software engineering experience and a long history of roles across major tech firms. Currently leading development at ITHelloworld, he connects talent and enterprise opportunities while maintaining hands-on engineering responsibilities. His open-source work includes back-end contributions to the well-regarded shadow project, where he improved robustness and readability in critical utilities like chpasswd. Past positions span product, support, test, and management roles at companies such as Baidu, Amazon, Oracle, and Google, reflecting a rare blend of executional depth and cross-functional experience. He pairs practical systems-level problem solving with recruitment and product insight, making him effective at shipping reliable infrastructure and bridging technical and hiring needs. An interesting detail: alongside platform work he has repeatedly focused on defensive code changes (e.g., preventing segmentation faults) that improve long-term system stability.
9 years of coding experience
8 years of employment as a software developer
Bachelor's degree, Computer Software Engineering, Bachelor's degree, Computer Software Engineering at Wuhan UniversityBachelor's degree, Computer Science, Bachelor's degree, Computer Science at Tongji UniversityBachelor's degree, Computer Engineering, Bachelor's degree, Computer Engineering at University of Science and Technology of ChinaBachelor's degree, Computer Science, Bachelor's degree, Computer Science at Tsinghua UniversityBachelor's degree, Computer Science, Bachelor's degree, Computer Science at Shanghai Jiao Tong UniversityBachelor's degree, Computer Science, Bachelor's degree, Computer Science at Peking UniversityBachelor's degree, Computer Software Engineering, Bachelor's degree, Computer Software Engineering at Fudan University
English
Stackoverflow
2,247reputation
221kreached
0answers
13questions
Github Skills (14)
c1710
c1110
cryptography10
system-programming9
security8
firewall6
internationalization6
macos6
certificate6
javascript6
http-proxy6
mako6
lxml6
mysql6
Programming languages (4)
Github contributions (5)
shadow-maint/shadow
Mar 2022 - Apr 2022
Upstream shadow tree
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 5 commits, 1 PR in 3 days
Contributions summary:Helloworld primarily contributed to the `chpasswd` utility within the `shadow` project, focusing on bug fixes, code refactoring, and feature enhancements. They addressed issues related to the handling of the `-R` parameter, improved code readability in the `get_salt` function, and introduced the `IS_CRYPT_METHOD` macro to streamline the code. Additionally, the user added a check for the `fopen` return value in `read_random_bytes` to prevent potential segmentation faults.
upstreamshadow
juyin/juyin.github.io
Apr 2023 - Jun 2023
Contributions:48 pushes, 6 branches in 1 month
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