Kui Cheng
Data Operation Engineer(Backend)
New Taipei, Taiwan
Summary
👤
Senior🎓
Top SchoolKui Cheng is a senior backend engineer with 11 years' experience designing high-performance distributed systems and SaaS platforms, specializing in Elixir and Erlang for large-scale IoT and real-time messaging. He has operated production systems at scale—architecting XMPP chat infrastructure for 4M DAU and processing 350M+ daily messages—while driving zero-downtime OTP migrations and measurable cost/performance gains. At TableCheck he built Elixir data pipelines and a GraphQL insights service, and has contributed upstream fixes to exqlite and the elixir-mongodb-driver. His background spans cloud platform work in Node.js, Go and Python, PKI/TLS gateways, and infrastructure migrations, giving him a pragmatic full-stack operational perspective. Known for diagnosing thorny connection and scaling issues, he combines strong design skills with hands-on automation of CI/CD and data ingestion pipelines. Based in New Taipei, Taiwan, he pairs rigorous academic training with a track record of improving system reliability and query performance in production.
11 years of coding experience
7 years of employment as a software developer
Master of Engineering (MEng), Electrical Engineering (Computer and Network), 3.88/4.0 GPA, Master of Engineering (MEng), Electrical Engineering (Computer and Network), 3.88/4.0 GPA at National Taiwan University of Science and TechnologyBachelor of Engineering (BEng), Computer Science, 3.62/4.0 GPA, Bachelor of Engineering (BEng), Computer Science, 3.62/4.0 GPA at Tunghai University
Chinese, English, Spanish
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (22)
mongodb-driver10
driver10
faunadb10
mongodb10
erlang9
elixir9
android-client8
chat8
xmpp8
messaging8
jabber7
fault-tolerant7
ecto7
fault7
mongooseim6
Programming languages (3)
Github contributions (5)
ColaCheng/ex_confusables
Mar 2021 - May 2021
Contributions:29 commits, 14 pushes, 1 branch in 2 months
ColaCheng/ex_trends
Mar 2020 - Mar 2020
Contributions:41 commits, 5 pushes, 2 tags in 4 days
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