Gary Or
Founder at Cronos | Cronos Labs
Hong Kong, China
Summary
👤
Senior🎓
Top SchoolGary Or is a founder and seasoned engineering leader with 14 years of experience building consumer fintech and blockchain platforms from Hong Kong. He co-founded Crypto.com and Foris, and now leads Cronos Labs, blending product-minded engineering with accelerator and fund-building to scale Ethereum-compatible ecosystems. A longtime Ruby on Rails hacker who has embraced Go and advanced crypto tech (Etherum 2, zk-SNARKs, BLS), he ships backend systems fast with time-to-market as a guiding principle. Gary is also an active open-source contributor to high-profile projects like Prysm (Ethereum PoS beacon chain), where he improved validator and block-fetching robustness. He pairs low-level protocol work with product UX sensibility, uniquely straddling blockchain research, infrastructure engineering, and merchant-facing fintech.
14 years of coding experience
11 years of employment as a software developer
The University of Hong Kong (HKU)
Github Skills (7)
go10
ethereum10
blockchain10
database9
databases9
api8
apidoc8
Programming languages (12)
Github contributions (5)
prysmaticlabs/prysm
Nov 2020 - Feb 2021
Go implementation of Ethereum proof of stake
Role in this project:
Back-end Developer
Back-end DeveloperContributions:17 reviews, 13 commits, 22 PRs in 3 months
Contributions summary:Gary primarily contributed to the back-end implementation of the Ethereum proof-of-stake system, specifically focusing on the beacon chain. Their contributions involved fixing issues related to block creation times, adding flags for header request limits, and implementing retry mechanisms for block fetching. The user also worked on enhancing the validator client by adding functionalities to the logging system.
golangconsensusstakeethereumproof-of-stake
pinglamb/math
Sep 2024 - Mar 2025
Contributions:459 pushes, 1 branch in 6 months
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