Blockchain Developer Job at Staffingine LLC, New York, NY

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  • Staffingine LLC
  • New York, NY

Job Description

Job Title: Blockchain Developer

Job Location: New York, NY

Job Type: Full-Time

Job Description:

  • Design, develop, and deploy Web3 components and integrations for Citi's Digital Asset Platform, including smart contracts, on-chain event listeners, wallet integrations, and blockchain protocol connectors
  • Build and maintain backend services that interface with public and permissioned blockchain networks (e.g., Ethereum, Hyperledger Besu, Corda, or equivalent)
  • Develop, test, and audit smart contracts written in Solidity or equivalent languages, ensuring security, correctness, and gas efficiency
  • Integrate Web3 libraries and SDKs (e.g., Web3J, Web3JS, Ethers.js, Viem) into enterprise Java and/or Node.js backend services
  • Implement asynchronous, event-driven architectures to handle on-chain events, transaction lifecycle management, and blockchain state synchronization
  • Collaborate with architects and senior engineers to contribute to the design of scalable, secure, and resilient Web3 infrastructure
  • Participate in code reviews, providing and receiving constructive technical feedback to maintain high engineering standards
  • Support the integration of digital asset custody solutions, tokenization frameworks, and DeFi/TradFi bridging components
  • Contribute to technical documentation, including smart contract specifications, integration guides, and architecture notes
  • Stay current with the rapidly evolving Web3 ecosystem - tracking protocol upgrades, new token standards, Layer 2 solutions, and emerging tooling relevant to institutional use cases
  • Work within Agile/Scrum frameworks, participating in sprint planning, stand-ups, and retrospectives within a distributed global team
  • Help identify and resolve technical issues across the Web3 stack, escalating where appropriate to ensure delivery quality and timelines

Job Tags

Full time, Contract work

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