Justin Garrison
Field CTO at Sidero Labs, Inc.
Los Angeles, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJustin Garrison is a Field CTO and seasoned cloud-native infrastructure leader with 12 years of experience building and operationalizing Kubernetes and Linux-first systems. He’s driven product and engineering strategy at Sidero Labs after leading developer advocacy at AWS and steering large-scale streaming infrastructure at Disney, blending hands-on DevOps with product leadership. An active open-source contributor, Justin has improved critical projects like vcluster (EKS compatibility) and Karpenter (Bottlerocket and ARM/NVIDIA support), and has patched Docker’s official Postgres image for more robust container initialization. Based in Los Angeles, he’s also a podcaster and communicator who translates complex infrastructure topics into practical guidance—reflecting a background that spans everything from university IT management to enterprise-grade platform design.
12 years of coding experience
17 years of employment as a software developer
Master's degree, Information Technology, Master's degree, Information Technology at Azusa Pacific University
English, Sign languages
Stackoverflow
358reputation
36kreached
6answers
5questions
Github Skills (40)
amazon-eks10
kubernetes10
docker10
postgresql10
scripting10
bash10
containerization10
dockers10
iks10
vcluster10
script10
go10
aws10
helm10
aac10
Programming languages (29)
Github contributions (5)
aws/karpenter-provider-aws
Nov 2020 - Dec 2022
Karpenter is a Kubernetes Node Autoscaler built for flexibility, performance, and simplicity.
Role in this project:
DevOps Engineer & Technical Writer
DevOps Engineer & Technical WriterContributions:88 reviews, 15 commits, 23 PRs in 2 years 1 month
Contributions summary:Justin contributed significantly to the Karpenter project by addressing infrastructure and documentation aspects. Their work included integrating Bottlerocket-specific configurations for NVIDIA and ARM64 AMIs and adding content for CAS migration, impacting cluster configuration. Moreover, the user updated the documentation to ensure it was current and correctly referenced file paths, as well as updating guides for getting started, demonstrating a focus on user experience and clear communication of technical concepts.
autoscalingperformancek8skubernetesnodejs
loft-sh/vcluster
Jan 2022 - Feb 2022
vCluster - Create fully functional virtual Kubernetes clusters - Each vcluster runs inside a namespace of the underlying k8s cluster. It's cheaper than creating separate full-blown clusters and it offers better multi-tenancy and isolation than regular namespaces.
Role in this project:Backend & DevOps Engineer
Backend & DevOps EngineerContributions:1 review, 9 commits, 1 PR in 13 days
Contributions summary:Justin primarily contributed to enhancing the vcluster project's compatibility with EKS (Amazon Elastic Kubernetes Service) by adding components and images specific to the EKS distribution. This included updating Helm values to incorporate EKS-specific configurations and dependencies, such as coreDNS. Furthermore, the user addressed code linting issues and made small changes to subcommand functionality, improving overall code quality and maintainability.
clustershelmvclusterk8scheaper
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