It is a technology made to store and transmit data, in a secure and transparent way for its users. It does not have a centralized intermediary. Each exchange is contained in blocks, which constitute the history. And this history is accessible to all users.
Moreover, cryptocurrencies and NFTs among others, are based on the blockchain.
As its name suggests, the blockchain expert is a person who therefore masters blockchain topics. He makes his expertise and knowledge available to his clients: banking, e-commerce, insurance, etc.
To be a good blockchain expert, you must master classic programming languages (html, Java, CSS, etc.). Knowing the whole operation and specificities of the blockchain is essential. Knowing how to manage databases and manage web content are also things to know.
Finally, regarding soft skills, listening and creativity will be your best assets to properly identify your clients' needs and implement solutions. Versatility, rigor and carrying out regular technological monitoring will also be important to shine !
This text has been translated from Google Translate.