Josh Lewittes
CTO at Runhouse
Tel-Aviv District, Israel
Summary
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Rockstar🎓
Top SchoolJosh Lewittes is a CTO based in the Tel-Aviv District with eight years of experience building data-driven backend systems and machine learning products. He moved from finance at Citi, where he modeled complex ABS cash flows, into applied ML and engineering roles—building behavioral fraud classifiers, OCR backends for financial documents, and production ML deployments. As CTO at Runhouse he combines hands-on system design with ML operationalization, following earlier roles as an ML engineer at Gloat and full-stack/data science training through Israel Tech Challenge. Josh’s background blends quantitative finance rigor with practical software and MLOps experience, making him comfortable translating research models into scalable, auditable services. A subtle strength is his cross-domain fluency: he understands both the financial implications of models and the engineering needed to run them reliably in production.
9 years of coding experience
4 years of employment as a software developer
Data Science, Data Science at Israel Tech Challenge <itc>Johns Hopkins University
English, Hebrew
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (36)
pytorch10
kubernetes10
artificial-intelligence10
observability10
chatgpt10
python10
evaluation10
langchain10
data-science10
open-source10
machine-learning10
typescript10
inference10
llm10
gcp10
Programming languages (3)
Github contributions (5)
run-house/kubetorch
Dec 2022 - Mar 2023
Distribute and run AI workloads on Kubernetes magically in Python, like PyTorch for ML infra.
Contributions:11 releases, 1187 reviews, 128 commits in 3 months
aikubernetesmachine-learningpythonpytorch
run-house/runhouse-docs
Aug 2023 - Mar 2025
Contributions:5094 pushes, 1060 branches in 1 year 7 months
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