Dan Cline - Software Engineer at Paradigm

Dan Cline

Software Engineer at Paradigm

Cambridge, Massachusetts, United States

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Summary

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Rockstar

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Top School

Dan Cline is a software engineer with nine years of experience focused on backend systems and blockchain infrastructure, currently contributing at Paradigm from Cambridge, MA. He has deep hands-on expertise in Bitcoin and Ethereum protocol implementations, having contributed to high-profile open-source projects like btcd, lit (Lightning Network), foundry, reth, and ethers-rs. His work spans low-level serialization (RLP), transaction/block validation, hardfork support, and performance-minded refactors in both Go and Rust. At MIT DCI he helped build Layer-2 and exchange tooling, and his open-source commits show a pattern of precise protocol fixes and robust error handling rather than surface features. Comfortable shipping production-grade distributed systems, he brings both academic research experience and industry product delivery from VMware to Paradigm. Colleagues can expect a pragmatic engineer who leans into protocol correctness and performance optimizations.

9 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 Massachusetts Amherst

English

Github Skills (30)

testing10

evm10

bitcoin10

bitcoins10

go10

web3js10

ethereum10

blockchain10

rust10

trie9

validations9

solidity9

eip9

validation9

alloy9

Programming languages (23)

C#JavaC++CSSRustCMakefileTeX

Github contributions (5)

paradigmxyz/reth

Sep 2022 - Mar 2023

Modular, contributor-friendly and blazing-fast implementation of the Ethereum protocol, in Rust

Role in this project:

Back-end Developer & Blockchain Engineer

Contributions:2288 reviews, 160 commits, 1367 PRs in 5 months

Contributions summary:Dan contributed to the core infrastructure of the Ethereum protocol implementation, RETH, written in Rust. Their work focused on implementing and adding new hardforks to the system. They added the EIP150 and EIP158 hardfork, replaced the existing EIP150/158 with EIP-4844, and added the Shanghai and Cancun timestamps. They made several code-related improvements and fixes in relation to these fork updates, primarily in the areas of transaction and block validation and the state-root calculation.

contributor-friendlyblazingethereump2prust

mit-dci/lit

Feb 2019 - Nov 2019

Lightning Network node software

Role in this project:

Back-end Developer

Contributions:37 commits, 6 PRs, 3 comments in 9 months

Contributions summary:Dan primarily focused on modifying the Vertcoin-related parameters and address prefixes within the coinparam directory. They made adjustments to the magic bytes, address prefixes, and other related parameters. In addition to this, the user added error handling for header issues and made multiple changes related to the handling of headers and blocks, which includes adding new channels and distributing lists. Further commits show modification to the go.mod file.

lightningblockchaincryptocurrencylightning-networkbitcoin

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