The blockchain ecosystem has reached a stage of solid growth, and many companies, along with some governments, are looking for Web3 developers with experience in cryptocurrencies and NFTs.
A bit about Web 3.0
Before proceeding to the description of the profession, it is worth understanding the Web 3.0 technology itself.
The Internet is changing. One of the latest technological innovations is Web3, a new version of the Internet that is growing exponentially in popularity.
The concept of Web 3.0, unlike its predecessors, Web 1.0 and Web 2.0, is peer-to-peer (P2P) decentralized networks such as blockchain.
Since this technology is only gaining momentum, the number of Web3 engineers cannot fully satisfy the demand of employers involved in the metaverse, cryptocurrency wallets and NFT projects.
Responsibilities of a Web 3.0 Engineer
The developer’s task is to create applications not limited to one cloud server. They are distributed over a blockchain or a decentralized P2P network that is not controlled by central authorities.
Where will these skills come in handy?
Web3 DApps
Web3 libraries (SDKs) are essential for building any decentralized application. These libraries support interaction with blockchains like Ethereum.
The most important of these SDKs are web3.js, web3.py, and ethers.js. They are also associated with smart contracts, which we will discuss below.
Cryptocurrency wallets
They store your cryptocurrency and can be either digital or hardware. In Web3 applications, a wallet is needed to facilitate transactions.
A fee is charged for transactions in blockchain networks debited from the wallet. A blockchain web engineer can create an ETH wallet using standard languages such as Python, JavaScript, or Ruby.
Alternatively, developers can use the existing platform
wallets like MetaMask, the familiar fox wallet.
Nodes (Nodes)it
Nodes make up the blockchain and store a copy of it. For this reason, they are also referred to as Web3 providers since the application’s connection to the blockchain depends on these nodes. Without nodes, the application cannot interact with smart contracts.
A commonly used provider is QuickNode, which provides a global network of nodes for high-speed performance.
Smart contracts
In the world of cryptocurrencies, smart contracts are code that resides on the blockchain.
Data written in the Solidity language cannot be changed or transformed. The code runs when the conditions necessary for it to run are met.
Intelligent contracts (an innovation of Ethereum) helped developers gain an advantage over Bitcoin in the speed of transactions (before the transition to PoS – 15 versus 7 t/s).
First Steps
The best place to start is with the Ethereum and Solidity documentation. Reading them will provide a basic understanding of the most popular blockchain ecosystem and how to write a smart contract.
The Solidity learning path will not be too tricky for most current developers, as the mechanics are very similar to C++ and Java. You can also start the course by writing smart contracts in a universal programming language – Rust.
Prospects And Salary
Blockchain professions = professions of the future. Of course, the demand for IT specialists of this type will continue to grow in proportion to the integration of blockchain technologies into the masses. Already now, a Web 3.0 engineer in Russia can earn $3,000, and the speciality features allow you to work from anywhere in the world with employers – for example, Western companies, receiving $11,000 per month for similar vacancies.
