1. Programming Languages - C++ as most of the cryptocurrencies are near fork of bitcoin which was written in C++ 2. Good understanding of cryptography 3. Ga

1. Programming Languages - C++ as most of the cryptocurrencies are near fork of bitcoin which was written in C++ 2. Good understanding of cryptography 3. Game theory 4. Distributed computing Extra - Economics and market microstructure - I believe most devs in cryptocurrency lack this. They think everyone acts rationally in a given situation so everything can be coded according to game theory.