Josef Klafka
Senior Software Engineer at Rokt
New York, New York, United States
Summary
👤
Senior🎓
Top SchoolJosef Klafka is a Senior Software Engineer in New York with eight years of experience building data-driven web and cloud systems, currently focused on Rokt’s Experimentation Platform to run hundreds of experiments for millions of customers daily. He blends a research background in computer and cognitive science with hands-on backend and full‑stack engineering—previously solving privacy tooling problems at Amazon Alexa and clinical search infrastructure at Epic. Comfortable across UX, databases, and AWS scaling, Josef pairs product-minded implementation with rigorous data science instincts from his academic work at Carnegie Mellon and the University of Chicago. Notably, he’s equally at home designing experimentation tooling that proves business value and managing lab teams, reflecting a rare mix of technical depth and people-facing project leadership.
8 years of coding experience
7 years of employment as a software developer
Bachelor of Science - BS Mathematics and Linguistics, Bachelor of Science - BS Mathematics and Linguistics at University of Chicago
Github Skills (6)
leaflet8
react5
javascript4
open-source3
sql1
database1
Programming languages (5)
Github contributions (5)
jklafka/Positional-Information
Aug 2018 - Nov 2019
Contributions:185 pushes, 2 branches in 1 year 3 months
jklafka/noisy-nets
Jan 2020 - Jun 2020
Contributions:69 commits, 65 pushes, 1 branch in 5 months
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