Blockchain Developer — Reuben Cooley Inc.
Job in
Jersey City, Hudson County, New Jersey, 07390, USA
Listed on 2026-09-04
Listing for:
The Bitcoin Street Journal
Full Time
position Listed on 2026-09-04
Job specializations:
-
Software Development
Blockchain / Web3, Backend Developer, Solidity Developer/ Blockchain
Job Description & How to Apply Below
- Location: NJ Jersey City US
- Sector: Blockchain
- Source: web
3.career
- Design, develop, and deploy Web3 components and integrations for a 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.
- Bachelor’s degree in Computer Science, Engineering, or a related discipline; MS is a plus.
- 8+ years of overall software engineering experience, with a strong backend development foundation.
- 2 to 4 years of hands‑on experience in Web3 and blockchain application development, including smart contract development and blockchain protocol integration.
- 3 to 5 years of experience with backend development using Java/Spring, Node.js, or equivalent enterprise frameworks.
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