Greg Sidelinger
Sr Consultant, Technology Engineer at Nationwide Insurance
Grove City, Ohio, United States
Summary
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SeniorGreg Sidelinger is a senior technology consultant and Kubernetes administrator with 13 years of experience building, maintaining, and supporting large shared clusters on-premises and in the cloud at Nationwide Insurance. He designs and implements Kubernetes controllers to enforce security and operational standards for platform users, turning policy into automated, auditable workflows. Greg contributes to open-source cloud-native tooling—notably improving DNS integrations in the widely used external-dns project by enhancing Infoblox and RFC2136 providers and strengthening multi-zone and logging behavior. Based in Grove City, Ohio, he blends hands-on systems work with a background in management information systems to solve real-world infrastructure problems. Pragmatic and detail-oriented, he focuses on durable, test-covered changes that reduce operational toil for platform teams.
13 years of coding experience
Github Skills (6)
kubernetes10
go10
dns10
kubernetes-pods10
testing8
external-dns8
Programming languages (10)
Github contributions (5)
kubernetes-sigs/external-dns
Aug 2019 - Sep 2022
Configure external DNS servers (AWS Route53, Google CloudDNS and others) for Kubernetes Ingresses and Services
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 commits, 3 PRs, 18 comments in 3 years 1 month
Contributions summary:Greg primarily contributed to the Infoblox and RFC2136 DNS provider integrations within the external-dns project. Their work involved fixing bugs related to zone matching in the Infoblox provider, and enhancing the RFC2136 provider to support multi-zone configurations. Furthermore, the user added logging for record deletions in Infoblox and updated the test suite for the RFC2136 provider.
gcproute53dnsexternal-dnsk8s-sig-network
gregsidelinger/eqnx
Mar 2013 - Nov 2018
Updated Equinox SuperSerial driver for Linux 3.7 and higher kernels
Contributions:1 release, 7 commits, 3 PRs in 5 years 8 months
drivertabletlinuxupdatedkernels
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