John Shieh
Software Development Engineer at Amazon
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolJohn Shieh is a software development engineer with a decade of experience building secure, production-grade systems and currently works at Amazon in Seattle. He holds a Computer Science degree from Rice University and has interned at Block, bp, and Amazon, reflecting strong industry exposure across payments, cloud, and energy domains. His open-source contributions include backend authorization enhancements to the widely used Keywhiz secret-management system, where he implemented fine-grained permission checks and extended ownership models. Comfortable across backend systems and security-sensitive code, he has a track record of integrating principal-based authorization into legacy components to improve access control. John also brings teaching experience from Rice CS, translating into clear technical communication and mentorship. Colleagues appreciate that he pairs practical engineering with thoughtful security-minded design.
10 years of coding experience
1 year of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Rice UniversityCentennial High School
Github Skills (9)
javas10
backend10
back-end-development10
java10
cryptography9
sql9
secret-management8
mockito8
spring-boot7
Programming languages (3)
Github contributions (5)
square/keywhiz
Jun 2022 - Jul 2022
A system for distributing and managing secrets
Role in this project:
Backend Developer
Backend DeveloperContributions:12 reviews, 9 commits, 13 PRs in 16 days
Contributions summary:John primarily focused on implementing permission checks within the Keywhiz system. They added new permission checks, including an `AnyPermissionCheck` and integrated them with the `SecretDAO` and `SecretResource` components. This involved modifying existing code to incorporate principal-based authorization and adapting the codebase to handle permission checks for various actions related to secrets and other resources. Furthermore, the user extended the ownership check to include `SecretSeries` and `SecretSeriesAndContent` objects and added checks for the `BackfillRowHmacResource`.
golangkeywhizmanage-secretssecret-managementsecurity
terdel-ninja/20PercentFF
May 2016 - May 2016
Contributions:11 pushes in 15 days
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