Rafał Kiełbus
Chief Technical Officer at Bitfold
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolRafał Kiełbus is a seasoned blockchain technologist and CTO with 13+ years of hands-on experience dating back to early Bitcoin days, combining core protocol development, smart contract auditing, and product-grade blockchain engineering. He has led tokenization, hardware wallet development, and bespoke blockchain projects across startups and consultancies while contributing to notable open-source work such as p2pool (peer-to-peer Bitcoin mining pool) to improve cross-currency compatibility and UX. A recognized educator and speaker, he teaches blockchain technology at multiple Polish universities and has advised government and regulatory bodies on blockchain policy and reports. Active in industry bodies and dispute resolution, he blends technical depth with governance experience—an engineer who mined BTC for under $10 and still prefers building and auditing systems over trading.
13 years of coding experience
technik elektronik, elektronika ogólna, 1996, technik elektronik, elektronika ogólna, 1996 at Zespół Szkół Elektrycznych, Gorzów Wlkp.bachelor degree, Company management, bachelor degree, Company management at ASBIRO - Alternatywna Szkoła Biznesu i Rozwoju Osobowego
English, Polish
Stackoverflow
31reputation
2kreached
2answers
3questions
Github Skills (22)
python10
bitcoin10
bitcoins10
cryptocurrency10
litecoin10
codebuild9
automated-build9
autobuild9
build-process9
network8
p2p8
net8
windows8
html6
boofcv6
Programming languages (12)
Github contributions (5)
p2pool/p2pool
Nov 2012 - Jun 2014
Peer-to-peer Bitcoin mining pool
Role in this project:
Back-end Developer
Back-end DeveloperContributions:166 commits, 8 comments in 1 year 6 months
Contributions summary:Rafał primarily contributed to the functionality and maintainability of the p2pool software. Their work includes fixing bugs related to the display of shares and transaction hashes, as well as adapting the software for compatibility with new Litecoin daemon versions. Furthermore, they made changes to the build process for Windows, detecting win64 and adding currency symbols and payout information to the front end. These modifications suggest a focus on improving the user experience and adapting the system for different platforms.
miningpoolpeer-to-peerbitcoin-miningbitcoin
Rav3nPL/doubloons-0.10
Apr 2015 - Mar 2025
Contributions:5 pushes, 2 branches, 3 comments in 10 years
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