Donn Felker
Staff AI Developer Experience Engineer at GoRails
Myrtle Beach, South Carolina, United States
Summary
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Rockstar🎓
Top SchoolDonn Felker is a seasoned Staff AI Developer Experience Engineer and pragmatic builder with 17 years of experience delivering mobile and web products that have reached millions of users. He blends deep Android and Kotlin expertise—formerly a Google Developer Expert and contributor to projects like realm-java—with full‑stack proficiency across Ruby on Rails, Node.js, PostgreSQL, Docker and Kubernetes. As a founder and consultant he has launched and scaled developer-focused businesses (AndroidJobs.IO, Caster.IO) and accelerated research at Yale by cutting weeks-long workflows to under an hour. Known for shipping production-ready AI systems and enabling teams to adopt safe, scalable AI patterns, he pairs hands-on engineering with mentoring and strong testing/TDD practices. Based in Myrtle Beach, he combines entrepreneurial grit with a track record of improving stability in core infrastructure and developer experiences.
16 years of coding experience
23 years of employment as a software developer
MCTS, Web Client Development, MCTS, Web Client Development at Microsoft CertificationBachelor of Science, Software Engineering, Bachelor of Science, Software Engineering at University of Advancing Technology
Stackoverflow
9,613reputation
1.6mreached
94answers
35questions
camera
top-5%
return-value
top-5%
android
top-1%
android-intent
top-5%
Github Skills (24)
testing10
databases10
java10
javas10
junit10
android10
database10
android-intent9
json9
mobile9
portable-database9
mockito9
nosql-database9
camera9
return-value9
Programming languages (13)
Github contributions (5)
realm/realm-java
Nov 2015 - Feb 2016
Realm is a mobile database: a replacement for SQLite & ORMs
Role in this project:
Backend Developer & QA Engineer / Test Automation Engineer
Backend Developer & QA Engineer / Test Automation EngineerContributions:16 commits, 14 PRs, 1 push in 3 months
Contributions summary:Donn focused on improving the stability and reliability of the Realm Java database. They added checks and exception handling to prevent errors during refresh operations within transactions. Contributions included the implementation of test cases and test helpers, especially for asynchronous transactions, to ensure the database behaves correctly under various conditions. Furthermore, they introduced and tested ISO8601 date parsing functionalities, and also added functionality that allowed developers to pass objects via ids. The user also ensured that the system correctly handles deletion and the use of the contains method.
ormsreact-nativenosql-databasemobile-databaseandroid
donnfelker/AndroidCodeExamples
Dec 2011 - May 2012
Contributions:3 commits in 5 months
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