| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
ENS Labs | Remote | $105k - $120k | |||
Unreal Gigs | Remote | $72k - $75k | |||
0x | San Francisco, CA, United States | $105k - $120k | |||
Lukso | New York, NY, United States | $86k - $90k | |||
| Learn job-ready web3 skills on your schedule with 1-on-1 support & get a job, or your money back. | | by Metana Bootcamp Info | |||
Lukso | International | $36k - $90k | |||
Lukso | International | $86k - $90k | |||
Lukso | New York, NY, United States | $36k - $90k | |||
Lukso | New York, NY, United States | $86k - $90k | |||
Kastech Software Solutions Group | Charlotte, NC, United States | $72k - $78k | |||
Minutes to Seconds | New York, NY, United States | $39k - $65k | |||
CodeQuadrat | Remote | $0k | |||
Animoca Brands Limited | Hong Kong, Hong Kong | $36k - $54k | |||
Momento USA LLC | New York, NY, United States | $39k - $65k | |||
Zodiac Solutions, Inc | New York, NY, United States | $72k - $78k | |||
Synechron | New York, NY, United States | $120k - $130k |
Ethereum Name Service (ENS) is a decentralized, permissionless naming system built on the Ethereum blockchain that enables human-readable names (like "myname.eth") to be linked to standard Ethereum addresses and other distributed systems.
As one of the first protocols built on Ethereum, ENS has enabled over 3 million registered .eth names, and over another 20 million ENS names from teams such as Coinbase, Uniswap, and Linea, as well as integrations with hundreds of other apps, wallets, protocols, and browsers in the crypto ecosystem.
ENS Labs has been driving the core development of the ENS protocol since 2018. We created the ENS app, open-source libraries, and core smart contracts. We are on a mission to make crypto-powered experiences as easy and accessible as browsing the web. Join us as we build the next iteration of our protocol, ENSv2, and pioneer a more decentralized, flexible, and scalable ENS for the future.
About the Role
As a Smart Contract Engineer at ENS, you will work directly with the engineering team to design, implement, and maintain smart contracts that power the ENS ecosystem. You’ll be responsible for writing secure, efficient, and scalable smart contracts, integrating them with the ENS system, and ensuring they meet the needs of both developers and end users. You’ll also be involved in creating new smart contract features, improving existing contracts, and participating in governance and upgrades to the ENS protocol.
The ideal candidate is a skilled smart contract developer with a deep understanding of Ethereum, Solidity, and decentralized applications (dApps), and someone who is passionate about creating secure, performant, and well-architected blockchain solutions.
What You'll Do
Design, develop, and deploy smart contracts that power ENS features.
Write high-quality, secure, and efficient code for smart contracts.
Contribute to the evolution of the ENS protocol, suggesting new features, enhancements, and improvements based on community and internal feedback.
Optimize smart contracts for lower gas fees, enhanced performance, and increased scalability.
Who You Are
3+ years of experience in developing smart contracts on Ethereum or other EVM-compatible blockchains.
Interested and passionate about contributing to the crypto ecosystem
Proficient in Solidity and other related tools and libraries (e.g., Hardhat, Truffle, Remix, OpenZeppelin).
Experienced with decentralized applications (dApps), Ethereum’s ERC standards (e.g., ERC-20, ERC-721, ERC-1155), and the general Ethereum ecosystem.
Strong understanding of gas optimization, security best practices, and common vulnerabilities (e.g., reentrancy, front-running, integer overflow/underflow).
Strong ability to write clear, maintainable, and testable code.
Strong attention to detail and problem-solving skills, with the ability to analyze complex issues and develop efficient, scalable solutions.
Strong written and verbal communication skills.
It’s a Plus, if You Have
Experience with ENS or other decentralized identity protocols.
Familiarity with layer 2 scaling solutions, sidechains, or other blockchain interoperability technologies.
Experience with Web3.js, Ethers.js, or other JavaScript libraries used to interact with Ethereum.
Contributions to open-source projects or a strong GitHub presence demonstrating your work in blockchain development.
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.