Wen-chieh Yu
Senior Backend Engineer at AmazingTalker
New Taipei, Taiwan
Summary
🤩
Rockstar🎓
Top SchoolWen-chieh Yu is a Senior Backend Engineer with 11 years of experience building scalable, secure backend systems and improving product performance across multi-region web platforms. Currently at AmazingTalker, he migrated chat to a Go microservice, cut Redis storage by 75%, and halved LCP for Europe/US via CloudFront, Lambda@Edge, and Redis tuning. He has a strong backend and DevOps background from roles at Cherri, where he led payment/tokenization design for PCI DSS Level 1, built serverless MVPs, and optimized transaction queries and infrastructure for high throughput. With a master's in computer engineering focused on security and ML, he also participates in CTFs and vulnerability research, contributing practical security fixes for employers. He documents technical knowledge publicly—StackOverflow answers and a tech notes site—and emphasizes maintainability through tests, architecture patterns, and infrastructure-as-code.
11 years of coding experience
6 years of employment as a software developer
碩士, 資訊工程學系, 碩士, 資訊工程學系 at 國立臺灣科技大學學士, 資訊工程學系, 學士, 資訊工程學系 at YZU
English, Japanese, Chinese
Github Skills (108)
expressjs10
controller10
high-availability10
rancher10
security10
vms10
csrf-token10
web-development10
middleware10
volumes10
flexbox10
pci10
sdk10
virtualization10
input-mask10
Programming languages (15)
Github contributions (5)
TapPay/tappay-nodejs
Jul 2017 - Aug 2020
Contributions:19 commits, 28 pushes, 10 tags in 3 years 1 month
nodejsdirect-pay
Yu-Jack/harvester
Oct 2023 - Jul 2026
Open source hyperconverged infrastructure (HCI) software
Contributions:1 release, 1094 pushes, 194 branches in 2 years 8 months
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