William O'neill
Staff Site Reliability Engineer at Vantage
Canton, Georgia, United States
Summary
🤩
Rockstar🎓
Top SchoolWilliam O'neill is a Staff Site Reliability Engineer with 13 years of experience modernizing cloud infrastructure and driving large-scale migrations. He has led transformative projects—most notably a three-year Kubernetes migration at SurveyMonkey that refactored 200 services and cut compute costs by over 40% (~$2M annual savings)—while maintaining zero downtime. Skilled across AWS, GCP, Terraform, Kubernetes, and CI/CD tooling like ArgoCD and GitHub Actions, he combines deep automation expertise with practical cost and security-minded engineering. William excels at building high-velocity remote teams and creating self-service infrastructure patterns that remove bottlenecks for feature teams. His background spans startups to enterprise, from designing immutable infra at Spreedly to consolidating DNS and CDN at MailChimp, showing a continuous focus on efficiency and resilience. Based in Canton, Georgia, he also supports Emmy-winning media production workflows, bringing a rare mix of SRE rigor and creative-industry operational experience.
14 years of coding experience
24 years of employment as a software developer
Bachelor of Arts - BA Mass Communication/Media Studies, Bachelor of Arts - BA Mass Communication/Media Studies at Temple University
Github Skills (151)
fedora-coreos10
python10
synchronize10
webserver10
coreos10
home-assistant10
ansible-role10
github-api10
azure-devops10
rbenv10
asdf10
nginx10
bare-metal9
syncthing9
mqtt9
Programming languages (16)
Github contributions (5)
woneill/asdf-tfsec
Jan 2020 - Oct 2020
tfsec plugin for asdf version manager https://github.com/asdf-vm/asdf
Contributions:6 commits, 38 PRs, 51 pushes in 9 months
asdfasdf-vmtfsec
woneill/udm-traefik
Nov 2022 - Aug 2025
Add hostnames used by Traefik based routes to a UDM DNS server
Contributions:3 PRs, 7 pushes, 4 branches in 2 years 8 months
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