Erc 20 Jobs in Web3

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Job Position Company Posted Location Salary Tags

Upside.gg

United States

$36k - $61k

Qredo

Lisbon, Portugal

Mythical Games

Los Angeles, CA, United States

$32k - $92k

Parallel Finance

San Francisco, CA, United States

$60k - $70k

Paraspace

San Francisco, CA, United States

$60k - $70k

Paraspace

San Francisco, CA, United States

$71k - $112k

DeFiner Inc

Minneapolis, MN, United States

$72k - $75k

Staked

San Francisco, CA, United States

$63k - $100k

NFTLaunchKit

United States

$80k - $100k

Capgemini

United States

$13k - $63k

Capgemini

United States

$50k - $71k

Discreet Labs

Palo Alto, CA, United States

$50k - $70k

Qredo

Madrid, Spain

$63k - $72k

Qredo

Madrid, Spain

$50k - $84k

Qredo

Sofia, Bulgaria

Senior Solidity Engineer

Upside.gg
$36k - $61k estimated

This job is closed

Location: Remote (US or Canada preferred)


Benefits:

  • Health, Dental and Vision
  • Long Term and Life Insurance
  • Unlimited PTO
  • Monthly health and wellness stipend

Who We Are

Upside is a growing, blockchain-based Web3 company focused on making it simple to launch and manage tokens - the building blocks of web3 organizations. As a company, we believe being a remote organization is an advantage, and we believe in the power of asynchronous work. To that end, we foster a collaborative community that can come together as individuals and in teams to build something truly special. Visit https://www.upside.gg/ to learn more.

Why This Role Exists

We are looking for an experienced Senior Solidity Smart Contract Engineer to focus on our open and closed source smart contract protocols. This includes the development of DAOs, NFTs, tokens, and wallet infrastructure across many blockchains like Ethereum, Solana, Avalanche, Polygon and Algorand.

The right engineer will have extensive Solidity Smart Contract coding experience, moderate backend coding experience, the ability to self-manage and prioritize, clear and consistent communication skills, and a desire to write production level smart contracts that people will use at scale. The ability to interface with clients is highly valued.

This role requires someone special: an expert developer that consistently ships high quality code, with the ability to maintain a strategic perspective on the why of our features, not just the what.

This role will report directly to the Director of Engineering.

Required Qualifications

  • Has 2+ years of blockchain development experience with EVM Solidity
  • Proven knowledge of Ethereum Standards such as ERC20 and ERC721, and proficiency with Solidity and EVM based blockchains
  • Proven knowledge of Javascript blockchain libraries such as Ethers.js, Web3.js, Hardhat and Truffle
  • Has moderate experience in Node full stack development
  • Experience with automated testing and test-driven-development using technologies such as with Jest, Mocha, Chai or Solidity unit tests
  • Experience working with security auditors to address vulnerabilities

Responsibilities

  • Developing production-grade decentralized apps and smart contracts with Solidity.
  • Developing full stack solutions with Node, Rails, React, etc.
  • Taking ownership of development within a user-centric context
  • Developing new APIs, jobs, integrations and cloud functions (e.g. Lambdas)
  • Extending the existing Rails and Node applications
  • Writing automated tests using test-driven-development principles
  • Reviewing pull requests and maintaining code integrity
  • Improving the architecture and codebase via software development best practices
  • Integrating with EVM blockchain smart contracts written in Solidity, as well as smart contracts in other blockchains

Qualities:

  • You enjoy taking new product ideas from idea to launch quickly (maybe you’re a little impatient with unnecessary bureaucracy)
  • You think in terms of how to deliver end-user value with the least effort and highest quality instead of checking off tasks.
  • You are a self-starter who can reason through the differing priorities within a project.
  • You are kind, caring and genuine. We lead with kindness.
  • You are motivated and appreciate the latitude of your work
  • You appreciate your independence and ask questions (Slack is our favorite!)
  • You are able to accept feedback constructively

Traits We Value

Entrepreneurial: we’re a startup. We’re looking for high integrity people who have founded companies, started community groups and launched creative projects because they were driven to. The traits that embody this entrepreneurial spirit are:

  • Drive + Alignment: We believe in the power of intrinsic motivation to exceed the status quo in a field you are passionate about. This is where the magic happens.
  • Talent: Where passion, innate skill and work ethic meet.
  • Trust: Our entire organization is built on a high level of trust and credibility. We work only with those that meet our highest standards for trust.
  • Communication: Clear, concise, honest, creative. We prize great communicators that can lead and listen.

Application Requirements

  • A link to your GitHub profile
  • A link to your LinkedIn profile
  • A link to any project(s)

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:

  1. balanceOf(address): Returns the token balance of a specific address.
  2. transfer(address to, uint256 value): Transfers tokens from the caller's address to the specified address.
  3. approve(address spender, uint256 value): Approves a specific address to spend a certain amount of tokens on behalf of the caller.
  4. allowance(address owner, address spender): Returns the amount of tokens approved by the owner that the spender can transfer.
  5. User1 owns 500,000 ABC Tokens.
  6. User2 wants to buy 100 ABC Tokens from User1.
  7. User1 approves User2 to spend up to 100 ABC Tokens on her behalf.
  8. User2 calls the transferFrom() function with User1's address, his own address, and the value of 100 tokens.
  9. The transferFrom() function deducts 100 tokens from User1's balance and adds them to User2's balance.