Solidity Developer


About the job

IntellectEU is an international technology company focused on digital finance and emerging technologies. At IntellectEU we are on a mission to become the top-of-mind fintech company. We are committed to our people and believe in building a better future with the newest of the newest technologies. Giving young people and the industry veterans a growing ground to play, launch ideas & work very closely with our clients. With our hands-on experience in both technical & capital market, thereโ€™s no challenge thatโ€™s left untackled. Since 2006 we have been focused on financial messaging and integration, being a SWIFT service partner.

We are looking for a motivated Solidity Developer who would like to join our Engineering team at IntellectEU, namely our Defi&Crypto Department. As part of the team, you will be responsible for using the Solidity smart contract language to design and implement solutions under various distributed ledger technologies.


  • Deliver production-ready Smart contracts
  • Keep up to date with the latest developments of the Ethereum ecosystem and provide deep knowledge to the team.
  • Participation in all stages of software development - from design and development to deployment.
  • Coach and mentor other members of the development team, growing the collective knowledge and expertise of the group.

Technical skills

Must have:

Requirements (General):

  • Strong software development background.
  • Strong knowledge of common algorithms and data structures.
  • Experience working with large codebases.
  • Experience working with open-source projects.
  • Strong knowledge of concurrency and writing efficient and safe multithreaded code.
  • Degree in computer science, software engineering, or equivalent development experience.
  • Clean code, OO principles, SOLID and KISS.
  • Understanding of SDLC, excellent communication, and business skills.
  • Understanding of the modern development ecosystem: Git, CI/CD, and automated testing.

Requirements (Specific):

  • Strong knowledge of Ethereum like blockchains.
  • Ideally Proficient in one of the following languages: C++, Java, JavaScript, C#.
  • Familiarity with basic cryptography.
  • Familiarity with P2P networks.
  • Strong foundation in smart contracts development (Solidity or Vyper).
  • Working experience of web3.js package and crypto wallets like metamask and my myetherwallet (MEW).
  • Proficient in implementing fungible(ERC20) and non-fungible(ERC721) tokens.
  • Well-versed in smart contract security aspects like Re-entrancy attack, Race conditions, Integer overflow/underflow, Denial of service etc.
  • Production Experience with applications build on EVM-based blockchains.
  • Knowledge of smart contract dev tools/frameworks - hardhat and truffle.
  • Understanding of RESTful web services design.

Nice to have:

  • Proficiency with fundamental front-end languages such as HTML, CSS, and JavaScript.
  • Proficiency with JavaScript frameworks such as Angular JS, React, and Amber.
  • Proficiency with server-side languages such as Nodejs, Python, Ruby, Java, PHP, and .Net.
  • Proficiency with database technology such as MySQL, Oracle, and MongoDB.
  • Knowledge of Level 2 scaling technologies

Soft skills

  • Excellent verbal communication skills.
  • Good problem-solving skills.
  • Attention to detail.
  • English Upper-intermediate

  • About our company:
  • Competitive salary and benefits package
  • Great opportunities for personal and professional development
  • Business travel opportunities
  • International experience in a solid company: the company has offices in Antwerp, Kyiv, New York, Lisbon, Viseu and working in the market for over 14 years
  • Passionate and friendly team in an innovative, casual, positive, and open work environment

Apply now
Apply now

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