Blockchain Developer

This is a fully remote position, open to applicants in United States.

📋 Description

• Create and implement secure smart contracts tailored for enterprise blockchain applications.

• Develop scalable backend services that interact with blockchain networks for purposes such as transaction processing, asset management, and identity verification.

• Construct RESTful and GraphQL APIs for both web and mobile applications.

• Design blockchain data models, token standards, and transaction workflows.

• Integrate enterprise applications with various blockchain platforms including Ethereum, Hyperledger Fabric, Polygon, and Avalanche.

• Develop wallet integrations, digital signature processes, and key management solutions.

• Implement blockchain event listeners, indexing services, and off-chain processing components.

• Build scalable microservices utilizing .NET Core, Java, or Node.js.

• Optimize smart contracts for gas efficiency, scalability, and transaction throughput.

• Conduct smart contract audits, security testing, and vulnerability assessments.

• Deploy blockchain infrastructure across Azure or AWS.

• Engage in architecture reviews, code reviews, technical design sessions, and production support.

• Diagnose blockchain network issues, transaction failures, synchronization problems, and production incidents.

• Contribute to digital asset tokenization, smart contract workflows, enterprise wallet and identity integration, event processing, multi-signature approvals, analytics, and cloud-native distributed systems.

⛳️ Requirements

• Over 6 years of professional software development experience focused on building enterprise-grade distributed applications.

• More than 3 years of hands-on experience in blockchain development, delivering production blockchain solutions.

• Proficient in developing smart contracts using Solidity and EVM-compatible networks.

• Familiarity with Ethereum, Hyperledger Fabric, Polygon, Avalanche, Binance Smart Chain, or Quorum.

• Expertise in JavaScript/TypeScript with Node.js, C#/.NET Core, or Java.

• Experience in building dApps using frameworks such as React, Angular, or Vue.js.

• Solid understanding of blockchain architecture, consensus algorithms, cryptographic hashing, digital signatures, Merkle trees, and distributed ledger concepts.

• Experience implementing ERC-20, ERC-721, ERC-1155, or custom token standards.

• Familiarity with integrating MetaMask, WalletConnect, Coinbase Wallet, or enterprise custody platforms.

• Experience with REST APIs, GraphQL APIs, WebSockets, and blockchain RPC interfaces.

• Proficient with SQL and NoSQL databases, including PostgreSQL, SQL Server, MongoDB, or Redis.

• Familiarity with Git, CI/CD pipelines, automated deployments, and release management.

• Experience deploying applications on Azure or AWS.

• Strong skills in debugging, performance optimization, and troubleshooting in a production environment.

• Experience working in Agile Scrum teams.

• U.S. work authorization: U.S. citizens, Green Card holders, EAD holders, or H-1B transfer candidates; new H-1B petitions cannot be sponsored.

🏝️ Benefits

• Comprehensive benefits package.

• Competitive compensation structure.

• Supportive work-life balance.

• Opportunities for career advancement.

• Continuous learning and professional development opportunities.