Alex Rosenfeld
Architect I R&D at American Express
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolAlex Rosenfeld is an Architect I in R&D with eight years of hands-on experience building full-stack, cloud-native, and AI-driven systems, currently exploring post-quantum cryptography and generative AI at American Express. He combines deep implementation skills across Python, TypeScript, Go and C with production expertise in Django, React, Kubernetes, and AWS to deliver scalable services and RAG/LLM-based solutions. Alex has led large distributed teams and coordinated cross-organizational efforts to integrate cutting-edge models and tooling, while also shipping end-to-end products that include speech-to-text, TTS, and interactive video. His background as a professional orchestral French horn player informs a disciplined, collaborative approach to complex technical problems and rare attention to performance and craft.
8 years of coding experience
6 years of employment as a software developer
Bachelor of Music Music Performance: French Horn, Bachelor of Music Music Performance: French Horn at Northwestern UniversityMasters of Music Performance: French Horn, Masters of Music Performance: French Horn at San Francisco Conservatory of MusicQwasar College: Master of Science - MS Computer Science, Qwasar College: Master of Science - MS Computer Science at Woolf
Stackoverflow
91reputation
14kreached
1answer
5questions
Github Skills (24)
gecko10
firefox10
git-mirror10
mercurial10
mozilla10
debugging9
devtools9
git8
basecamp7
nested6
modulo6
developer-tools6
max6
angularjs6
amazon-web-services6
Programming languages (6)
Github contributions (5)
arosenfeld2003/arosenfeld2003.github.io
Apr 2019 - Feb 2025
Contributions:17 PRs, 124 pushes, 3 branches in 5 years 11 months
arosenfeld2003/myangular
Jan 2019 - Aug 2020
My work through the book: Build Your Own AngularJS, Copyright © 2016 Tero Parviainen
Contributions:73 commits, 2 PRs, 57 pushes in 1 year 6 months
javascriptcopyrightangularjsangularbuild-your-own
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