Who is a blockchain developer and what does he do In simple words, a blockchain developer https://unicsoft.com/blockchain-development-services/ is a programmer who makes various products using blockchain technology - smart contracts, protocols and decentralized platforms, as well as cryptographic tools. Depending on what duties and tasks are, there are two types of specialists: Core blockchain developers are responsible for the architecture of the blockchain: they create a consensus protocol, design the network and control it, monitor the security of the network. Blockchain software developers are engaged in the development of decentralized applications (dApps), using the existing developments of the core developers.