JS Blockchain Developer - BE Protocol Team at Polygon - Hermez

947 days ago
βœ… 27 applications

About the Job

Polygon Hermez is a blockchain startup formed by over 35 professionals. The team is spread all over the world, and we have offices in Switzerland and Spain. Polygon Hermez is a proud member of the Polygon ecosystem, you can read more here https://blog.hermez.io/polygon-hermez-merge/

We aim to improve the scalability of the Ethereum blockchain, creating an inclusive and accessible blockchain payments network by using ZK-proof technology.

Our protocol Polygon Hermez is a decentralised zero-knowledge rollup that scales the Ethereum network and lowers the cost of transactions. We do this while enhancing user experience and giving back to the blockchain community. More information can be found here https://hermez.io

We offer remote and flexible work. You can expect a warm welcome from a friendly and international team that will support you in your personal and professional growth. This is an exciting opportunity to take an active part in the blockchain space and contribute to the decentralization of the future.

We're looking for an experienced JS Blockchain Engineer to develop our core technology. You'll work with the engineering team to research, spec, and implement blockchain-based solutions that power L2 scaling solutions. In addition, as a software engineer, you will collaborate with team members in making architectural decisions.

What will you do?
Participate in designing blockchain scaling architectures.
Write high-quality, clean, commented and tested solidity smart contract code.
Develop and maintain integration testing regarding full scaling solutions.
Work with the engineering and product teams collaboratively, contributing ideas that add value to our product roadmap and company goals.

We are looking for someone with the following skills and knowledge:
Minimum 5 years experience in software development (javascript preferred).
Minimum one year experience working with backend blockchain stack: web3, ethers, truffle and/or hardhat.
Minimum one-year work with Ethereum blockchain architecture and smart contract development with Solidity.
Strong unit and integration testing culture. Strong attention to detail.
Team player who enjoys working independently and takes ownership of tasks end to end.
Good written and verbal communication skills in English.

It will be nice if you are:
Experience working in projects using cryptography, complex maths and complex database structures.
Experienced in designing blockchain architectures.
Familiar with existing L2 blockchain solutions.
Familiar with DevOps stack.
Experienced with other programming tools, especially on open source projects.

Last but not least:
We are looking for positive, optimistic, proactive, and creative people who are looking forward to building innovative technology.
If you think that your profile matches this position, please send your details to us.
Good luck!


JavaScript, Blockchain, solidity, Ethereum, Smart contract


85,000 + Equity

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