Justin Lau
Founder & Software Consultant at Koukitsuko Ltd.
Kyoto, Japan
Summary
👤
Senior🎓
Top SchoolJustin Lau is a founder and software consultant based in Kyoto with 13 years of hands-on engineering experience and 11 years designing resilient systems, plus eight years coaching and scaling product teams. He has led cloud-native transformations, built microservices and high-performance geospatial and ML-enabled products, and shipped rapid POCs for enterprises including PwC and SGCIB. Justin combines pragmatic architecture and minimalist MVP thinking to align technology with business outcomes, having repeatedly turned small teams into market-ready products and secured early customers quickly. He also contributes to open source quality—improving test coverage for the widely used UglifyJS toolkit—demonstrating attention to robustness and edge cases. Fluent across international markets from Hong Kong and Taipei to Japan, he pursues clarity, continuous learning, and measurable impact in every engagement.
13 years of coding experience
11 years of employment as a software developer
Bachelor of Engineering (B.E.), Software Engineering, Bachelor of Engineering (B.E.), Software Engineering at Jinan UniversityHKCEE, HKCEE at Queen's College 皇仁書院Japanese Studies, Japanese Studies at ARC Academy KyotoCert. IV, IT and Multimedia, Cert. IV, IT and Multimedia at Swinburne University of Technology
Chinese, English, Chinese, Japanese
Stackoverflow
27reputation
2kreached
0answers
2questions
Github Skills (14)
compressor10
uglifyjs10
parserator10
javascript10
parser10
test-automation10
testing10
demangler9
s69
code-optimization9
debugging8
parsing7
parse7
python6
Programming languages (7)
Github contributions (5)
mishoo/UglifyJS
May 2013 - May 2013
JavaScript parser / mangler / compressor / beautifier toolkit
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:6 commits in 1 day
Contributions summary:Justin primarily contributed to improving the test suite for the `uglifyjs` JavaScript parser/mangler/compressor/beautifier toolkit. Their work involved adding new test scenarios to cover edge cases related to property access and unicode identifiers. Furthermore, the user updated existing test cases to accommodate changes in the sorting behavior and optimization of the code. This includes fixes for issue #104 and changes related to `typeof undefined` optimization, ensuring code quality and maintainability of the project.
beautifierjavascriptparser
justin-lau/ember-intl-tel-input
Jun 2015 - Nov 2015
An Ember.js addon for entering and validating international telephone numbers.
Contributions:2 releases, 24 commits, 5 PRs in 5 months
emberjs
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