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This job is closed
Tell me what this is: Ethereum gas fees can be brutal. Enter Arbitrum. We build scaling solutions for Ethereum that radically decrease Ethereum fees and increase transaction speed. All without compromising on Ethereum’s security model. We’re also the only Ethereum scaling solution with working fraud proofs (this is a big deal).Â
Convince me that this is cool: If you’re a developer, porting your Layer 1 app to Arbitrum requires no code changes or downloads. We’re compatible with the existing Ethereum developer languages and tooling 🔥. This means that as a member of our team your audience will be pretty much everyone developing on Ethereum, not just Arbitrum.Â
Convince me that this is legit: Our team is full of super friendly + ultra nerdy types who want to build the future of the internet while laughing at brilliant memes. Our three founders are all PhDs and one was a professor at Princeton before Arbitrum. This means that we love solving problems that have never been solved before and that we love sharing our knowledge with others.Â
On the fundraising front, we’re crushing it. We raised a $3.8M in seed round in Jan 2019, then a $20M series A, and then (a week after! crazy!) a $100M series B in 2021.
Culture and Benefits:
Health, Dental and Vision Insurance 401(k) with company match Pre-tax commuter benefits Environment geared toward brainstorming and learning Generous paid time off - everyone needs to recharge!
We understand it takes a diverse team of highly intelligent, passionate, curious, and creative people to solve the challenges involved in developing and improving Arbitrum. Our dynamic team has incredible perspectives to share, just as we know you do, and we take great pride in being an equal opportunity workplace.
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.