Kolby Liebl
Backend Engineer at Offchain Labs
Greater Edmonton Metropolitan Area Canada
Summary
👤
Senior🎓
Top SchoolKolby Liebl is a backend engineer with eight years of experience specializing in blockchain infrastructure and high-performance networked systems. Currently contributing to Arbitrum Nitro at Offchain Labs, he previously worked at the Ethereum Foundation and helped implement a uTP-based transport in the widely used Ethereum/trin portal client, improving low-latency, low-resource data transfer. His background includes building large research datasets and REST APIs at the University of Alberta, and participation in focused programs like Summer of Bitcoin and the Ethereum apprentice cohort. Self-taught in many areas and formally trained in computer science, Kolby blends practical systems programming with a track record of shipping maintainable, production-ready protocol implementations.
8 years of coding experience
2 years of employment as a software developer
Bachelor of Science - BS, Computer Science, Bachelor of Science - BS, Computer Science at University of AlbertaComputer Programming, Computer Programming at self taught
Github Skills (5)
udp10
protocols10
rust10
network-protocol10
blockchain9
Programming languages (19)
Github contributions (5)
ethereum/trin
Jul 2021 - Jan 2022
An Ethereum portal client: a json-rpc server with nearly instant sync, and low CPU & storage usage
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 releases, 986 reviews, 18 commits in 6 months
Contributions summary:Kolby primarily contributed to the implementation of uTP, a UDP-based transport protocol, within the Trin client. Their work involved defining packet structures, connection management, and data transmission logic. Key contributions include the implementation of the uTP sub-protocol, integrating it with the portal network for data transfer, and addressing several issues identified. Further work involved refactoring parts of the uTP implementation for clarity and maintainability.
cpurpcsyncethereumportal
KolbyML/trin
Apr 2023 - Apr 2025
An Ethereum portal client: a json-rpc server with nearly instant sync, and low CPU & storage usage
Contributions:6 releases, 6 PRs, 1199 pushes in 1 year 11 months
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