Senior Blockchain - Remote - English

Tech Stacks/Requirements

• Languages: Solidity (EVM), TypeScript
• Frameworks/Tools: Hardhat (or Foundry), OpenZeppelin, Ethers.js
• Wallets: MetaMask, WalletConnect
• Networks: Ethereum / Polygon (EVM) (Solana optional: Rust + Anchor)
• Infra/Services: Alchemy/Infura, Tenderly (debugging), The Graph (optional indexing)
• Security: Slither, Mythril, OpenZeppelin Defender, audit checklist

Responsibilities

• Architect crypto payment smart contracts handling:
• Implement multi-wallet support (MetaMask, WalletConnect).
• Coordinate with backend to sync on-chain events off-chain order records.
• Optimize gas usage and contract upgrade strategy.
• Support multi-chain expansion readiness (Ethereum Polygon/Solana).