Choon Oh
Principal Software Engineer Just Walk Out at Amazon
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolChoon Oh is a Principal Software Engineer with 14+ years building scalable, concurrent backend systems and information-retrieval products, currently driving Just Walk Out engineering at Amazon. A true polyglot, he has shipped production services in Java, Scala, Python, Ruby and functional languages like Haskell, and has a deep practical interest in distributed and concurrent programming as core to future performance gains. His Amazon tenure includes architecting high-throughput content and checkout-free retail systems that run ML models in production, while earlier roles saw him design real-time combinatorial flight engines and optimize large-scale search relevancy. He favors reducing hard problems into tractable components and pairs that mindset with formal training in AI, machine learning and functional/reactive programming from Stanford and Martin Odersky’s courses. Based in Seattle, he combines product-focused engineering with low-level optimization chops—once cutting a parsing job from five hours to 20 minutes—and a history of improving throughput and reliability across domains.
14 years of coding experience
17 years of employment as a software developer
Ahmad Ibrahim Secondary SchoolAnderson Junior CollegeBachelor In Computer Engineering Awarded Second Class Honours Computer Engineering, Bachelor In Computer Engineering Awarded Second Class Honours Computer Engineering at National University of Singapore
English, Chinese, Japanese
Stackoverflow
81reputation
5kreached
1answer
0questions
Github Skills (32)
finder8
unix7
fuzzy7
bash7
neovim7
tmux7
hyphenation7
cli7
command-line-tool6
readline6
zsh6
nim-language6
ruby-on-rails6
taskwarrior6
vim6
Programming languages (3)
Github contributions (5)
soulofpeace/FareHound
Oct 2012 - Oct 2012
Contributions:32 commits in 13 days
wego/open-exchange-rates
Oct 2011 - Oct 2011
Contributions:16 commits in 2 days
apiexchangeratescoming-soonmore-info
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