Senior Smart Contract Engineer
Remote | Long Term5 months ago
MexicoBrazilColombiaArgentinaEuropeFull TimeContractPart Time
Tech skills
SolidityEthereumBSCRustSolanaPolkadotVyperHardhatFoundryTruffleBrownieRemix IDEWeb3.jsEthers.jsThe GraphMoralisChainlink OraclesOpenZeppelinSlitherMythXCertiKFortaERC-20ERC-721ERC-1155BEP-20AMMsstakingliquidity poolsYul assemblycalldata vs memoryefficient storage mappingNode.jsExpress.jsPythonFastAPIFlaskPostgreSQLMongoDBIPFSArweaveInfuraAlchemyQuickNodeDockerKubernetesReact.jsNext.jsWeb3 UI frameworks.
Required skills:
- Smart Contract Development:Solidity (Ethereum, BSC), Rust (Solana, Polkadot), Vyper
- Testing & Debugging:Hardhat, Foundry, Truffle, Brownie, Remix IDE
- Blockchain Interaction:Web3.js, Ethers.js, The Graph, Moralis, Chainlink Oracles
- Smart Contract Security:OpenZeppelin, Slither, MythX, CertiK, Forta (handling reentrancy, overflow, MEV attacks)
- Token Standards & DeFi Concepts:ERC-20, ERC-721 (NFTs), ERC-1155, BEP-20, AMMs, staking, liquidity pools
- Gas Optimization Techniques:Yul assembly, calldata vs memory, efficient storage mapping
- Backend Development (for dApps):Node.js, Express.js, Python (FastAPI, Flask)
- Databases & Storage:PostgreSQL, MongoDB, IPFS, Arweave
- Deployment & DevOps:Infura, Alchemy, QuickNode, Docker, Kubernetes
- dApp Frontend (Optional):React.js, Next.js, Web3 UI frameworks
What will you do?
- Design, write, and deploy smart contractson Ethereum, Solana, BSC, or Polkadot
- Develop DeFi applications(DEXs, lending protocols, staking systems)
- Optimize gas efficiencyand reduce transaction costs
- Ensure security best practicesin smart contracts to prevent hacks/exploits
- Test smart contractsusing Hardhat, Foundry, Truffle, or Brownie
- Integrate smart contracts with dAppsusing Web3.js, Ethers.js
- Collaborate with backend engineersto store and retrieve blockchain data
- Stay updated on blockchain advancements(new Ethereum standards, Solana updates, zk-rollups, Layer 2 scaling)
Conditions:
- Long term project
- Challenging tasks
- Remote friendly
- Competitive salary based on experience
- No micromanagement
