Yonah Wahrhaftig
Senior Backend Developer at Payoneer
Rosh Pina, North District, Israel
Summary
👤
Senior🎓
Top SchoolYonah Wahrhaftig is a Senior Backend Developer with over 15 years of experience designing and operating cloud-native, high-throughput systems that ingest data from hundreds of thousands of devices. He specializes in scalable backend services, ETL pipelines, and infrastructure as code on AWS, with a track record of improving reliability, performance, and maintainability of production platforms. Yonah has led cross-functional teams, refactored legacy systems, and built realtime ingestion and analytics pipelines that produce Parquet datasets queryable via Athena for fast business insights. He mentors engineers and drives engineering best practices while balancing pragmatic product needs with technical excellence. An active contributor to backend tooling (notably improvements to the switch_user gem), he combines deep systems-level experience—from low-latency trading systems to cloud data platforms—with a preference for taking full ownership of core systems. Based in Rosh Pina, Israel, he’s currently focused on senior backend and platform roles where he can shape robust, scalable products end-to-end.
15 years of coding experience
21 years of employment as a software developer
None, Computer Software Engineering, None, Computer Software Engineering at Miami Dade College
Github Skills (10)
ruby-rails10
rails10
ruby10
unit-testing8
testing8
abtest8
ab-testing8
ui-testing8
api6
api-design6
Programming languages (3)
Github contributions (5)
flyerhzm/switch_user
Nov 2010 - Nov 2010
Easily switch current user
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 commits in 2 days
Contributions summary:Yonah primarily contributed to the `switch_user` gem, making changes to the core logic and controllers. Their work involved adding the ability to specify a finder key per user group, fixing typos, and updating provider handlers to utilize a new hash. They also fixed a controller guard that was using the wrong user. These changes reflect improvements to the gem's flexibility, documentation, and overall functionality.
switch
GolanSoftware/devise_token_auth
Apr 2018 - Nov 2018
Token based authentication for Rails JSON APIs. Designed to work with jToker and ng-token-auth.
Contributions:4 PRs, 4 pushes, 1 branch in 6 months
token-based-authenticationtoken-basedrailstokenauthentication
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.