Kristijan Sedlak
Software Engineer
California, Slovenia
Summary
🤩
Rockstar🎓
Top SchoolKristijan Sedlak is a versatile software engineer and long-time open-source advocate with 14 years of professional experience and a coding history that stretches back to 1996. He co-authored the ERC-2477 standard and helped implement the reference ERC-721 NFT contract, blending deep blockchain protocol research with pragmatic full-stack engineering across web and mobile. As founder and CTO/CEO of 0xcert and later a consultant at Genobank.io, he’s built decentralized platforms that prioritize interoperability and privacy. He’s equally comfortable refactoring Solidity contracts as he is leading product and infrastructure teams, and his GitHub shows a focus on code quality, tests and maintainability. Based in California with roots in Slovenia, he brings a unique mix of startup leadership, academic teaching experience, design sensibility and even a creative background in music.
14 years of coding experience
19 years of employment as a software developer
6, Organizational IT management, 6, Organizational IT management at University of MariborPrimary School Valentin Vodnik Ljubljana5, 5 at High School Ljubljana-Šentvid
English, Slovenian, Croatian
Stackoverflow
35,633reputation
3.6mreached
65answers
188questions
mongodb
top-5%
mongoose
top-5%
Github Skills (20)
solidity10
contract10
ethereum10
truffle10
smart-contracts10
erc72110
design-tokens9
mongoose9
access-token9
nodejs9
tokend9
mongodb9
testing8
ruby-on-rails6
ecmascript6
Programming languages (20)
Github contributions (5)
nibbstack/erc721
May 2018 - Feb 2022
The reference implementation of the ERC-721 non-fungible token standard.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 8 reviews, 245 commits in 3 years 10 months
Contributions summary:Kristijan primarily focused on the development and refactoring of smart contract code. They initialized a Truffle project and made modifications to Solidity files, including `Migrations.sol`, `NFToken.sol`, and `ERC721.sol`, implementing and refining features related to ERC-721 tokens. Their contributions also involved code style refactoring, and adjusting function argument styles, indicating a focus on code quality and maintainability within the project. They also made changes to test files such as `NFToken.test.js` and `NFTokenMetadataEnumerable.test.js`.
non-fungible-tokentoken-standardtokensethereumcontract
xpepermint/approvedjs
May 2016 - Sep 2016
Contributions:64 commits, 56 pushes, 4 branches in 3 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.