Barak Oshri
Co-Founder & CTO at Nestmed
San Francisco Bay Area United States
Summary
🤩
Rockstar🎓
Top SchoolBarak Oshri is a Silicon Valley founder and CTO with 11 years of experience building ML-driven products and developer platforms from research prototypes to production. He co-founded Helicone, an open-source LLM observability platform used by developers to monitor and evaluate large language models, and now leads technology at Nestmed while advising as a Technical Fellow at SciFi VC. His background blends deep academic work at Stanford—first-author KDD publications and multiple TA roles in flagship ML courses—with hands-on engineering across full-stack, front-end UX improvements, and ML systems at companies like Sisu. Known for shipping pragmatic features (e.g., chat visualization and CSV tooling) that improve developer workflows, he pairs product-minded engineering with research rigor. Based in the Bay Area, he brings a rare combination of startup leadership, academic credibility, and a focus on observable, reliable ML infrastructure.
11 years of coding experience
6 years of employment as a software developer
IB Diploma, IB Diploma at United World College of South East AsiaMaster's degree Computer Science, Master's degree Computer Science at Stanford University
Github Skills (11)
typescript10
javascript10
typescripts10
react10
typescript-types10
openai9
supabase9
html9
css9
nextjs9
llm8
Programming languages (3)
Github contributions (5)
Helicone/helicone
Feb 2023 - Mar 2023
🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:17 reviews, 163 commits, 118 PRs in 1 month
Contributions summary:Barak primarily contributed to the front-end development of the Helicone platform. They implemented features such as CSV download functionality, and updated the user interface with a new chatgpt visualization, also making changes to the request and user table. The user made improvements to the existing codebase by adding new features and fixing several bugs. The user also updated the codebase to accommodate custom properties and moderation view.
agent-monitoringanalyticsevaluationgptlangchain
padelson/Infrastructure-Mapping
Oct 2017 - Nov 2017
Contributions:51 commits in 1 month
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.