Simon Leung
IBM Engineer Open Source Project Lead
San Jose, California, United States
Summary
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RockstarSimon Leung is an experienced open-source engineering lead with 12 years building and maintaining core Cloud Foundry components from San Jose, California. At IBM he leads efforts on the Diego runtime and the Cloud Foundry CLI, driving performance, plugin frameworks, and binary distribution architecture for widely used platform tooling. His hands-on contributions span backend API work, CI/CD and BOSH release automation, and DevOps-focused test-suite improvements—demonstrating fluency across application logic and operational infrastructure. Notable open-source work includes meaningful commits to the official Cloud Foundry CLI and service-catalog, where he improved plugin APIs, command handling, and Kubernetes TPR interactions. He pairs a systems-oriented mindset with practical product delivery, often refactoring for stability and observability rather than only adding features. Colleagues rely on him to translate complex platform requirements into maintainable, production-ready solutions.
12 years of coding experience
7 years of employment as a software developer
English, Chinese
Github Skills (22)
bosh10
kubernetes10
cloud-foundry10
apidoc10
testing10
plugin-development10
cicd10
ruby10
automation10
app-platform10
go10
api10
kubernetes-pods10
service-catalog10
automations10
Programming languages (6)
Github contributions (5)
cloudfoundry/cli
Sep 2014 - Apr 2017
The official command line client for Cloud Foundry
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 releases, 614 commits, 65 PRs in 2 years 7 months
Contributions summary:Simon's commits primarily focus on modifying the core functionality of the Cloud Foundry command-line interface (CLI). They added support for user-defined environment variables, modified the internal handling of commands, and enhanced the structure for plugin functionalities, including command aliases, versioning, and the addition of new plugin APIs. The user's contributions also involved improving error reporting and usage text within the CLI.
cloud-foundrycommand-lineclicloud-foundry-clicf-cli
cloudfoundry/cloud_controller_ng
Nov 2013 - Jan 2017
Cloud Foundry Cloud Controller
Role in this project:Back-end Developer
Back-end DeveloperContributions:113 commits, 12 PRs, 44 pushes in 3 years 2 months
Contributions summary:Simon's commits primarily focused on enhancing the Cloud Foundry Cloud Controller's API and backend functionality. They implemented a new feature to allow configurable health check timeouts in API endpoints and added database validation to ensure data integrity. Furthermore, the user corrected an error in the App#detected_start_command method, ensuring stability. The user's work included refactoring and bug fixes, highlighting a focus on the core application logic.
cloud-foundrycloudfoundryruby
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