Lead Blockchain Developer

Ironclad Ledger is a blockchain development company building sophisticated solutions across Ethereum and EVM-compatible networks. We specialize in DeFi protocols, NFT marketplaces, and cross-chain infrastructure, helping advance the Web3 ecosystem through secure and scalable smart contract development.

About the Role

We are seeking a Lead Blockchain Developer to architect, design, and implement secure smart contract systems and decentralized applications. In this role, you won't just write code—you will lead technical strategy and make key architectural decisions that impact our clients and the wider ecosystem.

This is a remote contract opportunity open exclusively to candidates based in the United States, with a flexible commitment of 20-40 hours per week.

Key Responsibilities

- Architecture & Leadership: Define technical roadmaps for smart contract development, ensuring best practices in security, gas efficiency, and scalability.

- Development: Design, develop, and deploy complex smart contracts across Ethereum and EVM-compatible networks (Polygon, Arbitrum, Base, etc.).

- Integration: Collaborate with frontend and backend teams to integrate blockchain logic using the viem/wagmi stack and ethers.js.

- Mentorship: Review code from team members, provide constructive feedback, and mentor junior developers to elevate the team's technical expertise.

- Innovation: Implement advanced features for DeFi protocols (lending, swapping, staking) and NFT mechanics (royalties, payment splits, dynamic metadata).

- Security: Conduct thorough security reviews and testing to identify vulnerabilities before production deployment.

Job Requirements

- Experience: 5+ years in software development, with at least 4 years specializing in Solidity and EVM development. A portfolio of deployed mainnet projects is required.

- Technical Depth: Expert-level knowledge of Solidity, Hardhat/Foundry, and the viem/wagmi/ethers.js ecosystem.

- DeFi & NFT Expertise: Deep understanding of DeFi primitives (AMMs, lending pools, staking) and NFT standards (ERC721, ERC1155, royalty standards like ERC2981).

- Security Mindset: Proven experience identifying and mitigating smart contract vulnerabilities (reentrancy, oracle manipulation, access control issues).

- Gas Optimization: Ability to write highly efficient contracts that minimize transaction costs without sacrificing security.

Bonus Skills

- Multi-Chain Experience: Deploying to and maintaining contracts on chains like Optimism, Celo, or Avalanche.

- Indexing: Experience building subgraphs using The Graph or using GraphQL for data querying.

- Open Source: Active contributor to Web3 developer tools or libraries.

- Storage: Familiarity with IPFS, Pinata, or other decentralized storage solutions.

Compensation & Benefits

- Compensation: $80-$130 USD per hour, depending on experience, technical expertise, and project requirements.

- Engagement: Ongoing contract leading critical blockchain development projects.

- Availability: Expected commitment of 20-40 hours per week.

- Location: Fully remote within the United States. Applicants must be US-based.

- Working style: Flexible scheduling and asynchronous collaboration, with an emphasis on clear communication.

- Ownership: Lead critical projects from conception to mainnet deployment.

How to Apply

If you are a senior blockchain engineer ready to step into a leadership role and architect the next generation of Web3 applications, please submit your resume.

Ironclad Ledger is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.