Web3 is a new paradigm
Browse 73,446 blockchain jobs in web3 at 7,167 projects. Filter the best remote crypto jobs by salary, location, and skills.
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Bondex Ecosystem
| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Coinflow Labs | Chicago, IL, United States | $91k - $100k | |||
Helius | United States | $88k - $150k | |||
Whale | Remote | $90k - $120k | |||
3METAD | San Jose, CA, United States | $54k - $95k | |||
Head Inn | New York, NY, United States | $82k - $115k | |||
Somnia | European Union | $63k - $99k | |||
OnePay | United States | $160k - $180k | |||
moomoo | Singapore, Singapore | $105k - $108k | |||
RockawayX | Remote |
| |||
Coinbase | Remote | $224k - $264k | |||
Coinbase | Remote | $218k - $256k | |||
Coinbase | Remote | $253k - $298k | |||
Base | Remote | $224k - $264k | |||
Consensys | Remote | $104k - $187k | |||
Emperia | United Kingdom | $90k - $180k |
## Responsibilities
- Integrate major Web3 wallets (e.g., 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
## Requirements
- Strong proficiency in JavaScript / TypeScript
- Hands-on experience with Web3 libraries (ethers.js, viem, web3.js)
- Deep understanding of EVM transaction lifecycle and structure
- Experience implementing wallet connection and signing flows in production
- Familiarity with RPC providers, node inconsistencies, and network reliability issues
- Experience building or contributing to Web3 applications (DEX, wallet, aggregator, etc.)
## Nice to Have
- Experience with multi-chain environments (Ethereum, Arbitrum, BSC, Polygon, etc.)
- 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 DeFi protocols or trading-related products