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Blockchain Engineer

E

EMA PARTNERS CHINA

8 - 10K USD
Full-time
Remote

Responsibilities

  • Develop, deploy, and maintain smart contracts for NFTs, ERC-20 tokens, and marketplace logic
  • Implement ownership transfers, escrow mechanisms, and fractional ownership on-chain
  • Ensure smart contract security, gas efficiency, and upgradeability using best practices
  • Integrate smart contracts with backend APIs and frontend applications to deliver a seamless user experience
  • Collaborate with product and design teams to define tokenomics, marketplace rules, and NFT utility
  • Monitor smart contract interactions on-chain to detect abnormal activity, optimize performance, and maintain system integrity
  • Write and maintain technical documentation, blockchain specifications, and testing frameworks
  • Provide technical leadership and guidance on blockchain architecture and design decisions


Requirements

  • 10+ years of professional software development experience, with a strong backend or full-stack foundation
  • 4+ years of blockchain development experience, including production smart contract deployments
  • Strong proficiency in Solidity and EVM-based smart contract development
  • Deep understanding of ERC-20 and ERC-721 standards and NFT marketplace architecture
  • Experience with Hardhat, Truffle, or Foundry for smart contract development, testing, and deployment
  • Experience deploying contracts on Ethereum mainnet and/or Layer-2 networks
  • Familiarity with crypto payments, escrow contracts, and on-chain/off-chain integrations
  • Strong knowledge of smart contract security best practices, including audits, threat modeling, and vulnerability mitigation
  • Ability to design scalable, maintainable, and upgradeable blockchain systems


Nice to Have

  • Experience building NFT marketplaces, DeFi platforms, or fractional asset platforms
  • Familiarity with multi-chain architecture, cross-chain bridges, or Layer-2 scaling solutions
  • Experience in blockchain analytics, transaction monitoring, or advanced gas optimization
  • Contributions to open-source blockchain projects or deployed smart contracts
  • Experience mentoring engineers or leading technical teams