Devin Atencio
Senior Linux Security Engineer at RingCentral
Phoenix, Arizona, United States
Summary
🤩
Rockstar🎓
Top SchoolDevin Atencio is a Senior Linux Security Engineer based in Phoenix with 7 years focused on systems reliability, security, and automation across large-scale data center and cloud environments. He combines hands-on Linux and SRE experience—managing Elasticsearch clusters, Kubernetes, and centralized logging—with a security-first mindset honed as a former CISO overseeing PCI-compliant hosting for banks and credit unions. Devin has driven migrations (data center to AWS, BIND to PowerDNS), deployed configuration management at scale (Chef, Puppet, Spacewalk), and built monitoring and remediation tooling in Python and Ansible to maintain high-availability SLAs. An active open-source contributor, he has full-stack involvement on Microsoft's widely used ApplicationInspector, improving its rules engine and report generation. Colleagues rely on him for incident response and engineering automation, and he occasionally brings an unconventional background to teams—he holds training in massage therapy alongside formal cybersecurity degrees—reflecting a pragmatic, people-centered approach to high-pressure ops work.
7 years of coding experience
12 years of employment as a software developer
Massage Therapy, Massage Therapy at Myotherapy College of UtahAdvanced Cyber Security (Undergraduate) Certificate, Advanced Cyber Security (Undergraduate) Certificate at University of PhoenixCNX (Certified Network Expert), CNX (Certified Network Expert) at PC Training West LLCBachelors in Cyber Security, Bachelors in Cyber Security at EC-Council University
Github Skills (10)
static-analysis10
csharp10
security-scan10
security-txt10
dotnet-core10
security10
json9
git8
html8
build-automation7
Programming languages (4)
Github contributions (5)
microsoft/ApplicationInspector
Oct 2019 - Dec 2020
A source code analyzer built for surfacing features of interest and other characteristics to answer the question 'What's in the code?' quickly using static analysis with a json based rules engine. Ideal for scanning components before use or detecting feature level changes.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:38 releases, 9 reviews, 217 commits in 1 year 2 months
Contributions summary:Devin primarily contributed to the development and maintenance of the Application Inspector project. Their work focused on updating and modifying the project's code, including changes to the project's build files. They also made significant changes to the HTML report generation functionality and to ensure consistent results. Furthermore, the user made changes to the rules engine to incorporate new functionality.
software-characterizationcharacteristicscode-analyzersecurity-scannersecurity-tools
guyacosta/SecureString
Dec 2019 - Jul 2020
Extension for c# string to add one step encryption and memory buffer clearing function for sensitive data
Contributions:18 commits, 8 PRs, 16 pushes in 6 months
cryptographymemorybufferto-stringstring
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