William Entriken

Lower Moreland Township, Pennsylvania, United States

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Summary

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Rockstar

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Top School

William Entriken is an AI product and transformation leader with 21 years of experience building developer-focused blockchain and web products and scaling teams from seed to enterprise. As lead author of the ERC-721 NFT standard and an active contributor to core Ethereum projects (Solidity, OpenZeppelin, Remix), he combines deep protocol knowledge with pragmatic product execution. He has run and grown education and training businesses, led technical due diligence for large firms like EY, and advised startups and governments on token strategy and adoption. William’s hands-on work spans front-end UX, back-end smart contract logic, build systems, and technical writing—evident in contributions to high-profile repos such as ethereum/remix, OpenZeppelin, and ERC721A. Fluent in English and Mandarin, he frequently runs developer workshops and has a track record of turning open-source standards into real-world commerce and policy impact. His background in finance and engineering gives him a rare blend of technical rigor and commercial judgment.

20 years of coding experience

2 years of employment as a software developer

BS, Computer Engineering, Mathematics, BS, Computer Engineering, Mathematics at Villanova University

MS, Finance, MS, Finance at Drexel University's LeBow College of Business

English, Chinese

Stackoverflow

Stats

37,891reputation

25.5mreached

245answers

290questions

Badges

mysql

top-5%

google-maps

top-5%

refresh

top-5%

twitter-bootstrap

top-1%

interface-builder

top-5%

git

top-5%

Github Skills (104)

twitter-bootstrap10

testing10

contract10

test-framework10

cmake10

ruby10

zksnark10

smart-contracts10

javascript10

labeling10

solidity10

laravel-mix10

laravel10

uid10

front-end-development10

Programming languages (34)

C#CGoHTMLNunjucksTypeScriptShellSolidity

Github contributions (5)

fulldecent/FDWaveformView

Oct 2013 - Oct 2021

Reads an audio file and displays the waveform

Role in this project:

iOS Mobile Developer

Contributions:16 releases, 162 commits, 36 PRs in 8 years 1 month

Contributions summary:William's contributions primarily revolve around the implementation and refinement of a waveform view for audio files within an iOS environment. They focused on building the user interface component in Objective-C, incorporating features like scrubbing to select progress, and implementing pinch and pan gestures for zooming. The user addressed cases where audio might not be present and optimized the rendering process for performance.

audio-filedisplaysaudiowavetuner

nibbstack/erc721

Sep 2018 - Jul 2021

The reference implementation of the ERC-721 non-fungible token standard.

Role in this project:

Back-end Developer

Contributions:5 reviews, 52 commits, 32 PRs in 2 years 10 months

Contributions summary:William primarily contributed to the core logic of an ERC-721 non-fungible token implementation. They fixed bugs related to token transfers, including handling invalid NFTs and ensuring proper safe transfers. The user also made improvements to the code, such as correcting spelling errors and updating Solidity code, and refactored the code to use underscores.

non-fungible-tokentoken-standardtokensethereumcontract

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