Tom Hacohen
Founder & CEO at Svix
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolTom Hacohen is a founder and CEO with 17 years of engineering experience, currently leading Svix to simplify and scale enterprise-grade webhooks from San Francisco. He blends product-first entrepreneurship with deep backend expertise—authoring key webhook parsing, code-generation, and Python example tooling in the open-source svix project. Prior to Svix he built and led software teams at Samsung and co-founded multiple startups, bringing operational experience from early-stage incubation (Y Combinator W21) to growth-stage productization. An active open-source maintainer, he has contributed meaningful fixes to widely used projects like Expo (calendar and contacts modules) and champions privacy-focused tools through EteSync. Customers and engineering teams rely on his practical focus: reducing webhook maintenance overhead so devs can ship integrations instead of firefighting delivery systems. Notably, he combines low-level protocol care with founder-level product instincts—rarely seen in a CEO who still regularly ships backend code.
17 years of coding experience
8 years of employment as a software developer
W21 batch, W21 batch at Y Combinator
English, Hebrew
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (20)
debug10
react-native10
python10
api-design10
calendars10
webhooks10
expo10
typescript10
contact-list10
api10
typescript-types10
typescripts10
mobile-development9
javascript9
ios9
Programming languages (24)
Github contributions (5)
svix/svix-webhooks
Feb 2021 - Jan 2023
The open source and enterprise-ready webhooks service 🦀
Role in this project:
Back-end Developer
Back-end DeveloperContributions:61 releases, 1325 reviews, 335 commits in 1 year 11 months
Contributions summary:Tom primarily contributed to the backend functionality of the svix-webhooks repository. Their work involved implementing features like webhook parsing for receivers using Python and updating these components according to server changes. They also contributed to code generation, added a python example generator with the help of an openapi client and added support for handling various types of headers.
pythonwebhook-serverdiahookwebhook-servicejavascript
expo/expo
Jul 2019 - Jan 2020
An open-source framework for making universal native apps with React. Expo runs on Android, iOS, and the web.
Role in this project:Mobile Developer
Mobile DeveloperContributions:16 commits, 9 PRs, 43 comments in 7 months
Contributions summary:Tom primarily contributed to the `expo-calendar` and `expo-contacts` modules, focusing on fixing bugs related to typing, functionality, and compatibility. They addressed issues in `getCalendarsAsync` and `getRemindersAsync` functions, updated type definitions, and added support for complex recurrence rules. Additionally, they fixed a crash in `expo-contacts` related to handling predicates.
ios-androidiosmobileweexframework7
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