Matt Rothenberg
Principal Systems Engineer at Cloudflare
New York, New York, United States
Summary
🤩
Rockstar🎓
Top School
Top expert iniOS Swift Development
Matt Rothenberg is a Principal Systems Engineer with 16 years of experience blending product design, front-end engineering, and backend systems work from freelance startups to Cloudflare. He has led product-focused engineering at GitHub Next and Replicate, co-created and shipped developer tools like Copilot CLI, and contributed to widely used open-source Swift and iOS projects including Alamofire and AFNetworking. Comfortable across the stack, Matt’s work spans UX-driven React apps and low-level Swift/Ruby tooling, with notable contributions to package management, networking, and media libraries. He brings a designer’s eye to engineering problems—running a longstanding freelance design/dev practice while shipping research-forward prototypes at scale. Known for refactoring for maintainability and pragmatic API improvements, he often surfaces subtle UX and reliability wins that aren’t obvious from product screenshots alone. Based in New York, he pairs curiosity about developer ergonomics with hands-on coding across languages and platforms.
16 years of coding experience
14 years of employment as a software developer
Political Science, Political Science at ICPBachelor of Arts Government French, Bachelor of Arts Government French at Skidmore College
English, French
Stackoverflow
86reputation
16kreached
2answers
2questions
Github Skills (124)
dependency-management10
postgresql10
mobile-development10
package-management10
python10
dependency-analysis10
image-processing10
testing10
command-line-interface10
http10
accelerator10
coretext10
ruby10
storekit10
data-transformation10
Programming languages (26)
Github contributions (5)
Flight-School/AnyCodable
Apr 2018 - Nov 2020
Type-erased wrappers for Encodable, Decodable, and Codable values
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 reviews, 37 commits, 21 PRs in 2 years 6 months
Contributions summary:Matt primarily contributed to the AnyCodable library, focusing on improving its functionality for encoding and decoding various data types within Swift. Their work involved implementing specific encoding behaviors for NSNumber values, adding tests to ensure proper encoding, and updating the playground with encoding and decoding examples. The user also made changes to support different environments, including adding CI configurations.
decodingencodablecodablebinary-serializationencoding
AFNetworking/AFNetworkActivityLogger
Aug 2013 - Feb 2015
AFNetworking 3.0 Extension for Network Request Logging
Role in this project:iOS Developer
iOS DeveloperContributions:19 commits, 2 PRs, 2 pushes in 1 year 6 months
Contributions summary:Matt primarily contributed to the `AFNetworkActivityLogger` library, addressing bugs and improving its functionality. They fixed implicit conversion warnings, added conditional compilation directives for newer iOS versions, and enhanced the logging capabilities. Furthermore, the user made adjustments to the code, like fixing and correcting any issues with the library that may have appeared with the newer versions of the library.
request-networkafnetworkingloggingrequest-loggingrequest
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