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Senior Solidity Engineer

$98k - $100k est.

This job is closed

Location: Remote (US or Canada preferred)

Comp: $120,000 - $160,000 + Equity


  • 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 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


  • 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


  • 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)

Candidate Requirements - Regions:

Currently, we are not able to hire individuals that reside in Russia, China, North Korea, Cuba, Iran, Syria, Sudan, and the Crimean region of Ukraine. You will be required to prove your current residency location to ensure we as a company stay within the legal confines of US law.

Candidate Requirements - Interviews:

The interview process for this role requires video-meetings with the camera on. We must ensure the identity of who we potentially will be working with. Anyone that proceeds through the process will be asked to prove their identity through a third-party platform.