Blockchain Developer

Location: 100% remote within the United States

Salary: $140,000–$200,000 annually

Company

hirify.global is a technology consulting and software development company delivering cloud, AI, data, and enterprise solutions across the United States.

What you will do

• Design, build, and maintain enterprise-grade decentralized applications, smart contract platforms, and blockchain-integrated backend services.
• Develop Solidity smart contracts, token standards, transaction workflows, wallet integrations, digital signature flows, and key management solutions.
• Build RESTful, GraphQL, WebSocket, and blockchain RPC interfaces for web and mobile applications.
• Implement event listeners, indexing services, off-chain processing, and scalable microservices using .NET Core, Java, or Node.js.
• Integrate blockchain applications with Ethereum, Hyperledger Fabric, Polygon, Avalanche, and other platforms across Azure and AWS.
• Conduct security testing, smart contract audits, performance optimization, architectural reviews, and production troubleshooting.

Requirements

• 6+ years of professional software development experience with enterprise-grade distributed applications.
• 3+ years of hands-on blockchain development experience delivering production solutions.
• Strong Solidity and Ethereum Virtual Machine experience, including smart contract development and token standards such as ERC-20, ERC-721, or ERC-1155.
• Proficiency in JavaScript/TypeScript with Node.js, C#/.NET Core, or Java, plus experience with React, Angular, or Vue.js.
• Experience with blockchain architecture, consensus algorithms, cryptography, wallets, REST and GraphQL APIs, databases, CI/CD, Git, and cloud deployment on Azure or AWS.
• Applicants must be based in the United States. U.S. citizens, Green Card holders, EAD holders, and H-1B transfer candidates are eligible; new H-1B petitions cannot be sponsored.

Nice to have

• Experience with blockchain solutions for financial services, healthcare, insurance, or supply chain industries.
• Hyperledger Fabric chaincode development, Layer-2 scaling, zero-knowledge proofs, multi-party computation, decentralized identity, or verifiable credentials.
• Knowledge of smart contract auditing tools, blockchain vulnerabilities, Hardhat, Foundry, Truffle, Docker, Kubernetes, Terraform, or infrastructure as code.
• Blockchain certifications or open-source blockchain contributions.

Culture & Benefits

• Full-time direct W2 employment.
• Hands-on work across architecture, development, deployment, security, and operational excellence.
• Collaboration with solution architects, security engineers, DevOps teams, and product owners.
• Work on high-availability distributed systems supporting millions of secure transactions annually.