• Department:
  • Location:
    Kharkiv, Ukraine or remote
  • Education:
    Master’s Degree
  • Experience:
    4+ years


  • We’re looking for a talented, motivated Fullstack developer with hands-on dApps and frontend development experience and a good understanding of blockchain technologies for a long-term blockchain product in the Decentralized Finance space, our own product “Primex Finance”. We are looking for someone who is passionate about Blockchain and continually keeps growing at the forefront of the cryptocurrency world.
  • Primex Finance — decentralized prime brokerage liquidity protocol for cross-margin trading on DEXes build on Polkadot. We have lots of exciting things planned on the roadmap and would like to keep delivering innovative and performant solutions as we move forward because we expand the borders of the existing DeFi ecosystem providing a set of new services, bringing one more part of traditional finance into the decentralized world. The product is backed by bay-area cryptofunds.


  • Being available for full-time 
  • Seniority — middle+/senior
  • 4+ years in React.js, and Node.js
  • Experience working in DeFi frontend development
  • Understand the flow of the web3 application.

Would be a plus

  • Provable experience delivering high quality, functional code
  • Experience with Solidity
  • An understanding of DeFi mechanisms and related utilities, e.g. liquidity pools, AMMs and bonding curves, DAOs, etc
  • Understand how to interact with solidity contracts- Call functions, get properties, check the status of the submitted transaction using web3.js
  • A background in economics, finance, banking, or a similar relevant field
  • Experience working in the DeFi ecosystem; or an avid DeFi user actively participating in the space, with a clear understanding of the financial concepts involved
  • A degree in computer science or relevant field or comparable experience
  • knowledge of ABI (eg. variable mapping to storage slots)
  • Experience with writing automation tests
  • Experience with Uniswap, SushiSwap, Aave;


  • Integrate interaction with blockchain into React frontend app to support the functionality of several smart contracts;
  • Develop keepers of margin trade process (Decentralized backend);
  • Develop, test and deploy protocol improvements and optimizations as we move forward on our roadmap;
  • Develop high-quality code that is maintainable, performant, and accessible
  • Cover by unit tests;
  • Integrate with existing DeFi protocols;
  • Research different existing DeFi protocols;
  • Write documentation, design flow diagrams, and review PRs;
  • Research, design, scope, and estimate what you need to do;
  • Build reusable cross-chain libraries 
  • Integrate your own UI/UX improvements to incentivize the users to use the platform;
  • Work with the state of the art developer stack 
  • Constantly improve yourself by keeping up to date with the latest technologies trends.

We offer

  • Remote and flexible work hours
  • Medical insurance
  • Long-term and stable employment
  • Cool distributed app project
  • Competitive salary and product shares opportunities
  • Personal and professional growth
  • Professional IT events compensation
  • Account management of your contractor entity
  • Paid vacation and sick days-off
  • Paid English classes with an individual plan

For Kharkiv team:

  • Paid lunches
  • Comfortable office at the city center
  • Ergonomic highly adjustable chairs for a healthy working experience
  • Coffee, tea, ice cream, and nuts