Nicholas Koh
Senior Software Developer at Shopify
Singapore
Summary
🤩
Rockstar🎓
Top SchoolNicholas Koh is a Senior Software Developer based in Singapore with 11 years of experience building reliable web platforms and APIs, currently shipping features at Shopify. He blends strong Ruby/Rails back-end expertise with ReactJS front-end experience, Dockerized deployment, and Postgres schema work, and has practical knowledge of AWS, Terraform, Airflow and Redis. Nicholas is a pragmatic engineer who values ownership and fast feedback loops—he’s rebuilt integrations, doubled deployment frequency through ECS migration, and rescued brittle background syncs to eliminate stuck tasks. He’s also an entrepreneur who built and sold a wedding-venue marketplace, and contributes to notable open-source Ruby projects like slack-ruby-client and mocha, improving API fidelity and testability. Continually curious and growth-focused, he seeks deeper technical mastery while mentoring peers and driving cross-functional product outcomes.
11 years of coding experience
11 years of employment as a software developer
Student Exchange Program, Marketing and Finance Specialisation, Student Exchange Program, Marketing and Finance Specialisation at Kenan-Flagler Business School, University of North CarolinaBBA (Second Upper Honours), Marketing and Finance, BBA (Second Upper Honours), Marketing and Finance at National University of Singapore
Stackoverflow
3,072reputation
396kreached
8answers
10questions
authentication
top-5%
python
top-5%
django-migrations
top-5%
django
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visual-studio-code
top-5%
Github Skills (37)
slack-api10
postgresql10
back-end-development10
apidoc10
stub10
stubs10
testing10
databases10
ruby10
api10
sql10
slack10
mocking10
minitest10
database10
Programming languages (12)
Github contributions (5)
slack-ruby/slack-ruby-client
Jun 2020 - Jan 2021
A ruby client for the Slack Web and Event APIs.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 reviews, 9 commits, 9 PRs in 7 months
Contributions summary:Nicholas primarily focused on updating and maintaining the Slack Ruby client's core functionality related to API methods. Their contributions included modifying the `chat.postEphemeral`, `chat.postMessage`, and `chat.update` methods, which involved handling attachments and blocks. Furthermore, they added methods related to AdminConversationsWhitelist and deprecated methods. They also used the `logger.warn` for the deprecated methods, and used `conversations_list` instead of deprecated `channels_list`, improving the overall functionality of the Ruby client.
ruby-clientslackslackbotslackapislack-api
freerange/mocha
Aug 2022 - Sep 2022
A mocking and stubbing library for Ruby
Role in this project:Back-end Developer
Back-end DeveloperContributions:50 reviews, 18 commits, 17 PRs in 29 days
Contributions summary:Nicholas primarily contributed to the `mocha` library, a mocking and stubbing library for Ruby. Their work involved refactoring and optimizing core components, such as the `Invocation` and `StubbedMethod` classes. They removed unnecessary code, improved argument handling, and deprecated support for older Ruby versions. Further contributions included the addition of features to support strict keyword argument matching.
mockingrubystubbingminitesttest-unit
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