Senior Solidity Engineer

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Jaxel is looking for an experienced and highly motivated Senior Solidity Engineer to join our growing family. The ideal candidate is passionate about blockchain technology and is highly proficient in developing smart contracts and decentralized applications on Ethereum.

As a Senior Solidity Engineer, you will be responsible for designing, implementing, testing, and deploying smart contracts on the Ethereum network and for their integration into our decentralized applications.


What You’ll Do:

  • Design, develop, test, and deploy smart contracts on the Ethereum network
  • Optimize gas-efficiency of smart contracts
  • Collaborate with our development team to integrate smart contracts into decentralized applications
  • Contribute to the ongoing development of our blockchain-based solutions
  • Conduct code reviews and ensure code quality and adherence to best practices
  • Ensure smart contract security by instilling the best security practices, such as ensuring data privacy, preventing malicious attacks, and mitigating the risk of errors or bugs in the code
  • Stay up-to-date with the latest advancements in the blockchain space and implement new features and technologies as needed


What You’ll Need:

Must have:

  • Bachelor’s degree in Computer Science or related field
  • 5+ years of experience in software engineering with at least 3 years of experience in developing smart contracts on Ethereum
  • Strong proficiency in Solidity programming language
  • Experience with smart contract testing frameworks such as Truffle or Hardhat, blockchain simulators such as Ganache, and test networks such as Goerli and Mumbai
  • Strong understanding of Ethereum and its ecosystem including wallet integrations, dApps, and NFTs
  • Familiarity with the principles of cryptography and the security best practices for smart contract development
  • Understanding of Oracles and how they work
  • Excellent communication and teamwork skills
  • Technologies
    • Solidity
    • Ethereum
    • Truffle or Hardhat
    • Ganache
    • Goerli/Mumbai
    • MetaMask
    • Git

Nice to have:

  • Experience with other blockchain platforms such as Polygon or Binance Smart Chain
  • Knowledge of other programming languages such as JavaScript, Go, or Rust
  • Familiarity with decentralized finance (DeFi) protocols and their smart contract implementations
  • Experience or familiarity with tools and techniques for smart contract auditing and testing, such as MythX and Echidna, and have experience implementing multi-signature wallets and other security measures in smart contracts
  • Contributions to open source blockchain projects
  • Passion for the blockchain industry and willingness to share knowledge and mentor junior team members

What We Offer:

  • Competitive salary
  • Relocation support
  • Remote work opportunity
  • Remote workplace setup
  • Comfortable work in your local time zone
  • Flexible work schedule
  • Comfortable working in a fast-paced, results-oriented environment
  • Professional growth and development
  • Multicultural working environment

Apply Now

Please send us a brief message about yourself with your most updated CV for consideration. We review all incoming resumes, and if we’re a match, we’ll set up your first intro call.

Head of Recruitment
Ekaterina Semenova –





Thank you for applying!

We have received your application and will get back to you shortly with next steps.