Blockchain Developer — Reuben Cooley

The Bitcoin Street Journal; Jersey City (NJ); On-site; USD 140,000 - 240,000; Full time

Job summary

The Bitcoin Street Journal is seeking an experienced Blockchain Developer to join our platform engineering team in the New York / Jersey City area. You will design and implement enterprise Web3 features, secure smart contracts, and integrate with Ethereum tooling.

Ideal candidates have 8+ years of software engineering, 2-4 years in Web3, with Solidity, smart contracts, and familiarity with Docker/Kubernetes and CI/CD pipelines. Remote work is not mentioned; candidates in NJ/NY preferred.

Qualifications

• 8+ years of software engineering experience.
• 2-4 years of hands-on Web3/blockchain development.
• Strong expertise in Solidity, smart contract development, and Ethereum ecosystem.
• Experience with Java/Spring Boot and/or Node.js.
• Proficiency with Web3.js, Ethers.js, Web3J, or Viem.
• Knowledge of ERC token standards, blockchain security, wallets, and transaction lifecycle.
• Experience with event-driven architectures, Kafka/RabbitMQ, Docker, Kubernetes, and CI/CD.

Skills

Solidity

Smart contracts

Ethereum ecosystem

Web3.js

Ethers.js

Web3J

Viem

ERC standards

Blockchain security

Wallets and transactions

Event-driven architectures

Kafka/RabbitMQ

Docker

Kubernetes

CI/CD

Java/Spring Boot

Node.js

Hands-on development

8+ years software engineering

Tools

Docker

Kubernetes

CI/CD

Web3.js

Ethers.js

Web3J

Viem

Kafka

RabbitMQ

Spring Boot

Node.js

Job description

• Location: NJ Jersey City US
• Sector: Blockchain
• Source: web3.career

Position: Blockchain Developer

Employment Type: Full-Time

Location: New York, NY / Jersey City, NJ

We are seeking an experienced Blockchain Developer with a strong background in enterprise software engineering and Web3 technologies.

Required Qualifications:

• 8+ years of software engineering experience
• 2-4 years of hands‑on Web3/blockchain development
• Strong expertise in Solidity, smart contract development, and Ethereum ecosystem
• Experience with Java/Spring Boot and/or Node.js
• Proficiency with Web3.js, Ethers.js, Web3J, or Viem
• Knowledge of ERC token standards, blockchain security, wallets, and transaction lifecycle
• Experience with event‑driven architectures, Kafka/RabbitMQ, Docker, Kubernetes, and CI/CD

Preferred Qualifications:

• Experience with Hyperledger Besu, Corda, or other permissioned blockchain platforms
• Exposure to Layer 2 solutions and cross‑chain protocols
• Financial services or regulated industry experience

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