Front-End Developer (Blockchain)

  • London, United Kingdom
  • Employees can work remotely
  • Full-time

Company Description

HENI is an international art services business working with leading artists and estates across publishing, print-making, digital, film and art research and analysis.

We are delighted to announce Palm, a new scalable and sustainable Ethereum protocol and token optimised for creators, and Palm NFT Studio, an innovation lab set up to collaborate with artists, marketplaces, and rights holders to bring projects and platforms into the Palm ecosystem.

Job Description

We are looking for two front-end developers who will play an active role in the design and architecture of our solutions.

This role will be offered as remote working only, on a contracting basis. 



  • Build pixel-perfect, buttery smooth UIs across desktop and both mobile platforms using web3 or polkadot js
  • Diagnose and fix bugs and performance bottlenecks for performance.
  • Reach out to the open source community to encourage and help implement mission-critical software fixes
  • Maintain code and write automated tests to ensure the product is of the highest quality.



  • Work on mission-critical projects with limited supervision
  • FIRM grasp of the JavaScript and TypeScript language and its nuances, including ES6+ syntax
  • Ability to write well-documented, clean Javascript code
  • Understanding of REST/GRAPHQL APIs, Solidity, Web3, React, TypeScript and other modern JavaScript frameworks
  • Experience with automated testing suites, like Jest or Cypress
  • You know how to work effectively in a remote environment, but when circumstances permit would have no problem working in the company’s offices several days a week as circumstances require.

In addition, ideal candidates should possess some of the following knowledge and skills gained through either side projects or direct experience:

  • Blockchain and smart contract development (using solidity) with good cursory knowledge with respect to the basic principles of cryptography.
  • In depth understanding of the Ethereum blockchain with sufficient knowledge and experience to deploy Ethereum nodes on either public or private networks.
  • Creation of Web3 Wallets, displaying of NFT (ERC-721) metadata structures
  • Display of market trading and staking tools
  • Previous experience developing KYC with 3rd party integration tools, SDK’s and API’s.
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