Blockchain Engineer Full Time

21.co is the world’s leader in providing access to crypto through simple and easy to use products. 21.co is the parent company of 21Shares and Amun, and its mission is to build bridges into the crypto world.

21Shares is the world’s largest issuer of cryptocurrency exchange traded products (ETPs) and is powered by Onyx, a proprietary technology platform used to issue and operate cryptocurrency ETPs for 21Shares and third parties. 21Shares mission is to make crypto easy.

Amun is a blockchain infrastructure company focused on making purchasing crypto more accessible by offering a suite of tools for passive strategies across major DeFi platforms. Amun’s mission is to simplify your crypto journey.

The company was founded in 2018 by Hany Rashwan and Ophelia Snyder and is a global organization, with offices in Zurich and New York. Cathie Wood, Chief Executive Officer & Chief Investment Officer of ARK Invest is a board member.

About the Role:

We are looking for a talented and experienced Blockchain developer to work on a team of engineers for one of our various DeFi blockchain products. The project will be cutting edge and unique to the crypto industry. There will be massive opportunities to learn new technologies and skillsets, as well as the chance to develop, test, and maintain code for our mission-critical products.

Our culture is all about diversity, communication, collaboration and education.

Responsibilities and Scope:

• Writing and delivering quality code
• Interpret product requirements and provide engineering estimates
• Write helpful and complete documentation for technical end-users
• Code review the work of peers to assure quality, security, and performance
• Identify opportunities to improve existing systems/workflows for performance, speed, and accuracy

What You Will Need To Be Great In This Role:

• A professional understanding of the Ethereum Virtual Machine and its Yellow Paper
• Fluency in Solidity or Vyper and Typescript or Python
• You care about building high-quality well-tested code
• Experience with web3 related libraries and API design
• A high level understanding of common cryptographic and smart contract related vulnerabilities
• Strong debugging skills and/or experience with reverse engineering
• Proficiency with Git
• Must be passionate about working with a growing team in an office environment
• Great written communication skills
• Degree in Engineering or Computer Science

Our Stack:

• Ethereum, Cardano, Solana
• Truffle.js, Hardhat, ganache-cli
• AWS infrastructure