Kelvin Fan
Software Engineer II at DoorDash
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolKelvin Fan is a Software Engineer II based in San Francisco with seven years of experience building resilient, cloud-native infrastructure and DevOps tooling. He has contributed significant backend and operational improvements to rpm-ostree and Fedora CoreOS, helping drive updates for over 73k nodes and enabling Docker-based host updates in OpenShift. At Red Hat he worked deeply on hybrid image/package systems and systemd integrations, and at DoorDash he continued shipping production services in logistics. Kelvin combines low-level systems work in C, Rust, and Bash with test and build automation expertise, often refactoring to reduce complexity and improve reliability. He began his engineering journey at the University of Toronto and brings a pragmatic focus on maintainability and real-world operational correctness. A detail many miss: his contributions often span both feature implementation and the surrounding QA/tests that ensure those features behave safely at scale.
7 years of coding experience
3 years of employment as a software developer
Bachelor of Science - BS Computer Science, Bachelor of Science - BS Computer Science at University of TorontoInternational Baccalaureate Diploma, International Baccalaureate Diploma at American International School of Guangzhou
English, Chinese, Chinese
Github Skills (24)
package-management10
drc10
testing10
bash10
automation10
go10
coreos10
systemd10
automations10
rust10
automated-deployment9
linux9
fedora9
configuration-management9
rpm9
Programming languages (9)
Github contributions (5)
coreos/coreos-assembler
Jul 2020 - Aug 2021
Tooling container to assemble CoreOS-like systems
Role in this project:
DevOps & QA Engineer
DevOps & QA EngineerContributions:8 reviews, 11 commits, 13 PRs in 1 year 1 month
Contributions summary:Kelvin primarily contributed to enhancing the testing and build process of the CoreOS assembler project. They updated existing kola tests to use `ss` instead of `netstat`, refactored test error messages, and added new tests for `growpart` functionality. Furthermore, the user extended support for excluding tests based on distribution and architecture, demonstrating a focus on test suite flexibility and maintainability. The contributions also involve integration testing and system service verification within the CoreOS environment.
containerscoreosbuildsystemdockerassemble
coreos/rpm-ostree
Jun 2020 - Jul 2021
⚛📦 Hybrid image/package system with atomic upgrades and package layering
Role in this project:Backend & DevOps Engineer
Backend & DevOps EngineerContributions:86 reviews, 28 commits, 23 PRs in 1 year 1 month
Contributions summary:Kelvin primarily contributed to the core functionality and operational aspects of the `rpm-ostree` project. Their work involved modifying the treefile parser and related tests to support version constraints, allowing for more flexible package management. Furthermore, the user implemented changes to enhance the daemon, adding features such as recording the systemd service unit and incorporating systemd inhibitor lock checks to ensure correct system behavior during reboots and deployments. They also made code improvements to improve the overall software reliability.
debcentosrpmpackage-managerhybrid-image
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