top of page










Front End Developer

Software Engineering



$75,000 - $150,000

About Company:

Kleros is an Ethereum based autonomous organization that works as a decentralized third party to arbitrate disputes. It relies on game-theoretic incentives to have jurors rule cases correctly. The result is a dispute resolution system that renders ultimate judgments enforced by smart contracts in a fast, inexpensive, transparent, and decentralized way.

Job Description:

You will be part of Kleros’ software development team, working closely with the team on open source code. You will develop front ends that bring Kleros to life: write code, participate in code reviews, conduct tests and work with our designers to create clean interfaces. At Kleros we develop many Decentralized Applications (DApps). You will work on core Kleros products like Court, as well as the many peripheral applications we build that interact with Kleros. The blockchain is the source of truth for all of our applications so a lot of the heavy lifting is done in our front end interfaces. You will be working with large volumes of data and problem solving to make the asynchronous nature of the blockchain feel smooth and user friendly. There are also opportunities to get involved with smart contract development and product development. The Ethereum ecosystem is innovating quickly; so above all, you will be learning new things all the time.


  • Front-end development using Javascript, Typescript, React and EthersJS.

  • Build fully functional DApps that interact with the Ethereum blockchain and Kleros Court.

  • Take part in the design process and user testing.

  • Taking responsibility for improving and maintaining existing projects.


  • Experience with Javascript, Typescript, React, and EtherJS.

  • A previous blockchain experience is not necessarily required but candidates should be able to demonstrate a blockchain interest (read blog posts / scientific articles, tried dapps on mainnets or testnets).

bottom of page