Joe Stringer
Principal Engineer, Isovalent At Cisco
San Jose, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJoe Stringer is a Principal Engineer at Isovalent (now part of Cisco) with 14 years of experience building high-performance, cloud-native networking and security software. He specializes in eBPF-powered datapaths and production-grade tooling—having driven key Cilium dataplane features, CI and release improvements, and integrations for EKS Anywhere and Azure Marketplace. Previously he scaled Open vSwitch kernel modules at VMware, adding advanced connection-tracking and flow-table optimizations that improved datapath efficiency. An active open-source maintainer and eBPF Foundation steering committee member, Joe pairs rigorous engineering with community leadership, regularly speaking at KubeCon and Linux Plumbers. Colleagues value his blend of low-level kernel expertise and pragmatic release/security processes that make complex networking tech reliably operable in production.
14 years of coding experience
11 years of employment as a software developer
BCMS (Hons) Networks, BCMS (Hons) Networks at The University of Waikato
Github Skills (33)
kubernetes10
github-ci10
ebpf10
testing10
kernel-module10
c-programming10
c1110
networking10
network-programming10
cicd10
c1710
kernel10
automation10
go10
kernel-mode10
Programming languages (21)
Github contributions (5)
cilium/cilium
Sep 2022 - Sep 2022
eBPF-based Networking, Security, and Observability
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:81 releases, 5182 reviews, 2 commits in 1 day
Contributions summary:Joe Stringer made multiple contributions to the Cilium project, with a focus on improving the codebase through refactoring, and enhancement of the test infrastructure. These changes include reformatting and improving the overall structure of tests and functions. Additionally, Joe enhanced the functionality of the CI system and the tools the developers will use to work and create releases.
bpfcontainerskerneltroubleshootingkubernetes-networking
openvswitch/ovs
Jan 2015 - Jan 2018
Open vSwitch
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 PRs, 305 pushes, 2 branches in 3 years 1 month
Contributions summary:Joe primarily contributed to the Open vSwitch kernel module, focusing on enhancements to connection tracking features and the management of flow tables. Their work included adding support for connection tracking label and mark fields, integrating connection tracking helpers, and optimizing flow revalidation processes. They also implemented features such as unique flow identifiers for efficient operation, which streamlined datapath operations and improved code readability.
twitch
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