Wallet Engineer

Stack

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Description

Build secure, reliable, and scalable wallet integrations and transaction flows for the SwapRail platform, focusing on connectivity, signing, and execution across multiple chains. Location: Remote / Work from Home Type: Part-time preferred / Full-time available , MetaMask, WalletConnect, Coinbase Wallet) across web and mobile environments - Design and implement secure transaction signing pipelines (EIP-1559, EIP-712, typed data, permit flows) - Build robust wallet connection systems, including session persistence, reconnection, and multi-account handling - Implement transaction building logic, including calldata construction, batching, and multi-step execution flows - Develop gas estimation, fee optimization, and fallback strategies across different networks - Handle edge cases such as nonce management, transaction replacement (speed up / cancel), and re-org scenarios - Collaborate with backend teams on routing, simulation, and execution layers - Work closely with frontend teams to ensure seamless UX for wallet interactions and transaction confirmations - Ensure high security standards in key handling, signing flows, and user interaction surfaces ) - Familiarity with account abstraction (ERC-4337) - Experience with smart contract interaction patterns (multicall, proxy, upgradeable contracts) - Understanding of MEV, slippage, and transaction execution risks - Experience working on De

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