| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Datax | Hong Kong, Hong Kong | $360k - $384k | |||
Immutable | Sydney, Australia | $36k - $90k | |||
Interlock | Remote | $54k - $90k | |||
Swaray | Los Angeles, CA, United States | $90k - $110k | |||
| Learn job-ready web3 skills on your schedule with 1-on-1 support & get a job, or your money back. | | by Metana Bootcamp Info | |||
Immutable | Sydney, Australia | $54k - $90k | |||
Continuum Works | Chicago, IL, United States | $180k - $210k | |||
Joint NFT | India | $115k - $2k | |||
Joint NFT | India | $115k - $2k | |||
Joint NFT | India | $0k - $2k | |||
Immutable | Remote | $63k - $75k | |||
Brinc | Hong Kong, Hong Kong | $43k - $53k | |||
Brinc | Hong Kong, Hong Kong | $43k - $53k | |||
Brinc | Hong Kong, Hong Kong | $43k - $53k | |||
Avalor Investments | Mumbai, India | $0k | |||
Parcel | Remote |
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Responsibilities
- Participate in the architectural and design decisions on blockchain DApp
- Design, implement, deploy, and monitor Solidity smart contracts
- Various development tasks including smart-contracts, crypto-wallets integrations (token minting, ERC-20, ERC-721, Staking)
- Work closely with management and product team to define crypto strategies and roadmaps on blockchain infrastructure
Expected Experience
- 1+ years in Solidity
- Strong computer science fundamentals
- Bash script and working under UNIX environment
- Node.JS, Python, or Golang
- Methods of deploying smart contracts such as but not limited to Truffle suite, Remix, Hardhat, etc.
- Integrating smart contract and backend services
Nice to have
- Startup experience in blockchain industry
- Passionate in achieving business goal by technology
Datax focuses on Machine Learning, Artificial Intelligence, Artificial Intelligence / Machine Learning, and Blockchain / Cryptocurrency. Their company has offices in Hong Kong. They have a small team that's between 11-50 employees.
You can view their website at https://morigin.network or find them on Twitter.
What is ERC20 example?
ERC20 is a standard for fungible tokens on the Ethereum blockchain
Here is an example of an ERC20 token
Let's say we create a new ERC20 token called ABC Token with a total supply of 1,000,000 tokens
Each token will be divisible up to 18 decimal places
To implement the ERC20 standard, we will need to define several functions, including:
- balanceOf(address): Returns the token balance of a specific address.
- transfer(address to, uint256 value): Transfers tokens from the caller's address to the specified address.
- approve(address spender, uint256 value): Approves a specific address to spend a certain amount of tokens on behalf of the caller.
- allowance(address owner, address spender): Returns the amount of tokens approved by the owner that the spender can transfer.
- User1 owns 500,000 ABC Tokens.
- User2 wants to buy 100 ABC Tokens from User1.
- User1 approves User2 to spend up to 100 ABC Tokens on her behalf.
- User2 calls the transferFrom() function with User1's address, his own address, and the value of 100 tokens.
- The transferFrom() function deducts 100 tokens from User1's balance and adds them to User2's balance.