John Teoli
Retired at Retired - DXC Technology
Newark, Delaware, United States
Summary
🤩
Rockstar🎓
Top School
Top expert inCross-Platform Development and Productivity Tools
John Teoli is a seasoned IT and security professional with 13 years focused on infrastructure, server builds, and compliance at DXC Technology and a multi-decade career spanning system architecture, field engineering, and technical support. He combines deep hands-on expertise in Windows and Red Hat environments, VMware ESXi, Dell servers/storage, and common network protocols with proven leadership managing teams, data center operations, and service delivery. As a former C++ developer turned front-end/documentation contributor to high-visibility MDN projects, he brings a rare mix of low-level hardware troubleshooting and modern web front-end craftsmanship. His open-source work improving MDN’s content, examples, and browser-compatibility tooling demonstrates attention to clarity, maintainability, and developer experience. Certified on Dell platforms and trained at Cisco Boot Camp, he’s comfortable operating where security, compliance, and operational reliability intersect. Based in Newark, Delaware, he now draws on that breadth in retirement while remaining active in documentation and web-focused contributions.
13 years of coding experience
29 years of employment as a software developer
Electrical and Electronics Engineering, Electrical and Electronics Engineering at Drexel University
Github Skills (31)
json10
compatible10
javascript10
mdns10
mdc10
css10
user-interface10
ui-design10
browser-support10
dom-manipulation10
web-audio-api10
front-end-development10
mdt10
html10
data-handling10
Programming languages (14)
Github contributions (5)
mdn/fetch-examples
Mar 2017 - Jul 2022
A repository of Fetch examples. See https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API for the corresponding documentation.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:11 reviews, 23 commits, 6 PRs in 5 years 4 months
Contributions summary:John primarily modernized and updated the example code, focusing on the Fetch API. They addressed various HTML, CSS and Javascript files, implementing and refining how the fetch API is used. The contributions involve rewriting existing code snippets for better readability and functionality, improving the overall examples. These examples showcase basic fetch operations, data retrieval, and response handling.
apijavascriptus-enmdn-docsweb-api
mdn/webaudio-examples
Sep 2014 - Jul 2022
Code examples that accompany the MDN Web Docs pages relating to Web Audio.
Role in this project:Front-end Developer
Front-end DeveloperContributions:13 reviews, 57 commits, 25 PRs in 7 years 11 months
Contributions summary:John primarily focused on updating and modernizing existing examples within the repository, specifically those related to the Web Audio API. Their contributions involved refactoring code to use constructors instead of factory methods, improving code clarity and maintainability. They also migrated code from XHR to fetch() for fetching audio data, improving performance and following modern web development practices. Furthermore, the user updated example titles and refactored code to use modern Javascript features.
javascriptaudioweb-audiomdnwebaudio-api
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