Song Jiang
Principal Software Engineer at Tigera
Cork, Ireland
Summary
🤩
RockstarSong Jiang is a Principal Software Engineer based in Cork with eight years focused on cloud-native networking and platform engineering. At Tigera he has driven core contributions and test automation for Project Calico, notably implementing nuanced policy features like the ApplyOnForward flag across Go agents, CNI plugins and host agents. His background spans hands-on systems design from co-founding enterprise storage startups to leading Docker and Kubernetes platform efforts, giving him deep experience in networking, storage and distributed systems. He combines backend and DevOps skills—having added Windows dataplane support and improved test infrastructure—to ensure features work across platforms. Song’s work emphasizes correctness and compatibility, often touching API, validator, conversion and BPF-related layers to deliver robust network policy enforcement. Colleagues rely on him for pragmatic, cross-component solutions that bridge low-level networking details and scalable product needs.
8 years of coding experience
21 years of employment as a software developer
Github Skills (28)
kubernetes10
group-policy10
pytest10
python10
apidoc10
back-end-development10
testing10
net10
policies10
go-testing10
networking10
iptables10
cicd10
go10
api10
Programming languages (9)
Github contributions (5)
projectcalico/cni-plugin
Nov 2017 - Jul 2021
Calico CNI plugin
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:2 releases, 14 reviews, 32 commits in 3 years 8 months
Contributions summary:Song primarily contributed to the Calico CNI plugin, focusing on Windows platform support. They added features for Windows, including networking setup and configuration within the plugin. The user also refactored existing Windows dataplane functions and improved Windows-based test infrastructure. Furthermore, they addressed issues, such as fixing network ID comparisons and removed an unnecessary configuration flag related to NAT exclusions.
calicocnicalico-cnicni-plugin
projectcalico/libcalico-go
Aug 2017 - Oct 2021
Golang Calico library functions: https://www.projectcalico.org
Role in this project:Back-end Developer
Back-end DeveloperContributions:8 reviews, 34 commits, 33 PRs in 4 years 2 months
Contributions summary:Song primarily contributed to the Calico Go library, focusing on policy management features. They implemented the "ApplyOnForward" flag in the policy data model and integrated it into the validator and conversion logic. These changes included updates to the API, backend, and associated tests, indicating a strong focus on core functionality and ensuring compatibility with existing features. The user also made improvements related to handling DoNotTrack and PreDNAT policies in the context of the ApplyOnForward flag.
golangcalico
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