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#blockchain firm IOHK work on stuff like #Cardano and #EthereumClassic !
Check out their vacancies https://iohk.io/careers/
#IOHK also work on non-profit gigs:
"Currently IOHK is studying new tools and paradigms for cryptographic research and the architecture of cryptocurrencies. More specifically, we are collaboratively developing an open-source library for universal composability and the Scorex project...."
Source: https://iohk.io/about/
Check them out!