Donald M is a Senior Security Engineer with two decades of hands-on experience in Unix/Linux infrastructure, DevSecOps, compliance automation, and security operations. He excels at bridging technical and business perspectives to deliver measurable improvements—examples include cutting Artifactory storage by 26%, orchestrating large migrations, and enabling a first-ever zero-deficiency audit year through AI-driven control automation. Comfortable across operations, architecture, and tooling, he builds pragmatic automation (Ansible, Python, UiPath) that reduces toil and prevents pipeline and production disruptions. A pragmatic Unix specialist who led AD insourcing and CyberArk deployments, he’s equally adept at translating audit requirements into technical controls. Based in North Richland Hills, TX, he brings a scientist’s curiosity—serving as Research Director at a Belize field station studying reptile ecology—into creative problem solving for security and reliability.
8 years of coding experience
15 years of employment as a software developer
Associate of Arts - AA, Associate of Arts - AA at The Art Institutes
Bachelor of Science - BS, Bachelor of Science - BS at Colorado State University Global
Creating grouped histograms and density plots that are displayed as proportions is not intuitive in ggplot. This repository contains code and examples for how to do it, as well as explanations of why many commonly-proposed solutions don't actually work.
Contributions:1 PR, 19 pushes, 1 branch in 27 days
ggplot2commonlyexplanationsto-doggplot
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Donald M - Senior Security Engineer at Charles Schwab