Charlie Santos
Principal Software Engineer at Twilio
Los Angeles Metropolitan Area United States
Summary
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Rockstar🎓
Top SchoolCharlie Santos is a Principal Software Engineer based in the Los Angeles area with nine years of professional experience and a decade-long career growth from technician and QA to technical lead and principal at Twilio. He specializes in front-end engineering for real-time media, having contributed notable work to Twilio’s widely used twilio-video.js SDK—implementing the addProcessor API, OffscreenCanvas integration, and robust test suites to improve cross-browser media handling. At Twilio he progressed from Staff to Principal roles, blending hands-on feature development with system-level reliability and documentation improvements. Earlier at Sony Electronics he moved through QA, engineering, and full-stack lead roles, demonstrating a strong foundation in product-quality and cross-disciplinary collaboration. Collected experience shows a pragmatic engineer who pairs deep implementation skills with a commitment to testability and developer experience. He holds a BS in Computer Information Systems and brings a practical, delivery-focused mindset to complex media and front-end challenges.
10 years of coding experience
12 years of employment as a software developer
BS, Computer Information Systems, BS, Computer Information Systems at Coleman UniversityBS, Computer Engineering, BS, Computer Engineering at Holy Angel University
Github Skills (9)
video-processing10
typescript10
javascript10
typescripts10
360-video10
webrtc10
typescript-types10
twilio10
react9
Programming languages (6)
Github contributions (5)
twilio/twilio-video.js
Sep 2020 - Aug 2022
Twilio’s Programmable Video JavaScript SDK
Role in this project:
Front-end Developer
Front-end DeveloperContributions:9 releases, 349 reviews, 85 commits in 1 year 11 months
Contributions summary:Charlie primarily contributed to the `twilio-video.js` repository by implementing and testing new features related to video processing and media handling. They were responsible for integrating the `addProcessor` API and its associated functionalities, which involved working with OffscreenCanvas and ensuring compatibility across different browsers. Their work also included writing unit tests and integration tests to validate the functionality of the newly introduced features. Furthermore, the user addressed the test flakiness and improved documentation.
javascripttwiliovideowebrtc
twilio/release-tool
Oct 2019 - Dec 2024
Release Tool
Contributions:2 reviews, 12 PRs, 8 pushes in 5 years 3 months
release-tool
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