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Smart Contract Engineer

RWAHub
14 days ago
Full-time
Hybrid
Worldwide

The Role

We are hiring a Senior Blockchain Developer to design and build smart contract systems across multiple client and internal projects.

You will work on a variety of blockchain applications - from DeFi protocols to tokenized systems and Web3 platforms - ensuring high standards in security, scalability, and architecture.

This is a senior-level, hands-on role with exposure to multiple products and industries.

What You’ll Do

  1. Design, develop, and deploy smart contracts using Solidity
  2. Implement token standards (ERC-20, ERC-721, ERC-1155) and custom logic
  3. Build and maintain contract architectures across multiple projects
  4. Ensure security, audit readiness, and upgradeability
  5. Optimize gas usage and performance
  6. Collaborate with backend and frontend teams for integrations
  7. Participate in code reviews and technical decision-making
  8. Contribute to documentation and internal best practices

What We’re Looking For

  1. 4+ years of experience in blockchain / smart contract development
  2. Strong expertise in Solidity and EVM-based ecosystems
  3. Experience with Ethereum and L2s (Polygon, Arbitrum, Optimism)
  4. Solid understanding of smart contract security and vulnerabilities
  5. Experience with Hardhat, Foundry, or similar frameworks
  6. Strong software engineering fundamentals (testing, Git, CI/CD)
  7. Ability to work across multiple projects and adapt quickly

Nice to Have

  1. Experience with DeFi protocols, staking, or token economies
  2. Experience working with auditors or security reviews
  3. Familiarity with upgradeable contracts (proxy patterns)
  4. Backend experience (Node.js / TypeScript)
  5. Experience in client-facing or consulting environments

Tech Stack

Solidity · Ethereum · Polygon · Arbitrum

Hardhat / Foundry · Node.js · TypeScript

React · ethers.js · IPFS

Why Join

  1. Work across a diverse portfolio of blockchain projects
  2. Exposure to both client work and internal ventures
  3. Opportunity to influence architecture and technical direction
  4. Collaborative, globally distributed team
  5. Fast-paced environment with continuous learning

What Success Looks Like

  1. Secure, production-ready smart contracts delivered across projects
  2. Successful audits with minimal critical issues
  3. Scalable and reusable contract architectures
  4. Strong collaboration with cross-functional teams
  5. Consistent delivery across multiple initiatives

How to Apply

Please submit:

  1. Resume or LinkedIn
  2. GitHub profile (required)
  3. Examples of smart contracts or blockchain projects