Senior Smart Contract Developer

API3 builds blockchain-native, decentralized APIs with DAO-governance and quantifiable security. We have recently raised a high profile seed round, executed a public distribution, and are now looking to fill some key roles in our core technical team.

Airnode is a serverless oracle node designed to be operated by API providers, and will act as a gateway between traditional Web APIs and smart contracts running on blockchains. This position will work on developing new protocols that Airnode will interact with and data aggregation contracts.

You can refer to the API3 whitepaper and our protocol docs for more information.


  • • Work on mission-critical projects with limited/no supervision
  • • Play an active role in the design and architecture of our solutions
  • • Learn new technologies as needed
  • • Work remotely with an internationally distributed team


  • • 2+ years of experience as a blockchain developer in commercial projects
  • • Very proficient with Solidity
  • • 5+ years of experience with a strong technical background in different technologies and environments
  • • Good grasp of modern software development tools (testing frameworks, CI/CD, version control, etc.)


  • • A PhD in relevant disciplines
  • • Experience as an auditor of smart contracts
  • • dApp development experience / React