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Join RWAHub as a Smart Contract Engineer to design and build smart contract systems for diverse blockchain applications. Work remotely in a senior role with a focus on security and scalability.
About 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.
Responsibilities
- Design, develop, and deploy smart contracts using Solidity
- Implement token standards (ERC-20, ERC-721, ERC-1155) and custom logic
- Build and maintain contract architectures across multiple projects
- Ensure security, audit readiness, and upgradeability
- Optimize gas usage and performance
- Collaborate with backend and frontend teams for integrations
- Participate in code reviews and technical decision-making
- Contribute to documentation and internal best practices
Requirements
- 4+ years of experience in blockchain / smart contract development
- Strong expertise in Solidity and EVM-based ecosystems
- Experience with Ethereum and L2s (Polygon, Arbitrum, Optimism)
- Solid understanding of smart contract security and vulnerabilities
- Experience with Hardhat, Foundry, or similar frameworks
- Strong software engineering fundamentals (testing, Git, CI/CD)
- Ability to work across multiple projects and adapt quickly
Nice to Have
- Experience with DeFi protocols, staking, or token economies
- Experience working with auditors or security reviews
- Familiarity with upgradeable contracts (proxy patterns)
- Backend experience (Node.js / TypeScript)
- Experience in client-facing or consulting environments
Tech Stack
Solidity, Ethereum, Polygon, Arbitrum, Hardhat / Foundry, Node.js, TypeScript, React, ethers.js, IPFS
Why Join
- Work across a diverse portfolio of blockchain projects
- Exposure to both client work and internal ventures
- Opportunity to influence architecture and technical direction
- Collaborative, globally distributed team
- Fast-paced environment with continuous learning
What Success Looks Like
- Secure, production-ready smart contracts delivered across projects
- Successful audits with minimal critical issues
- Scalable and reusable contract architectures
- Strong collaboration with cross-functional teams
- Consistent delivery across multiple initiatives
Company
RWAHub
Location
Remote, United States
Employment Type
Full-Time
Why Join
- Work across a diverse portfolio of blockchain projects
- Exposure to both client work and internal ventures
- Opportunity to influence architecture and technical direction
- Collaborative, globally distributed team
- Fast-paced environment with continuous learning