Job Description:
We are seeking a skilled Blockchain Developer to help build and optimize a secure, non-custodial cryptocurrency wallet supporting multiple blockchains. You will work on core wallet functionalities, smart contract integration, and cross-chain interoperability while ensuring top-tier security and performance.
Responsibilities:
✅ Develop and audit smart contracts (Solidity, Rust) for wallet features like multi-sig, staking, and swaps.
✅ Integrate blockchain protocols (Ethereum, Bitcoin, Solana, etc.) via RPC, APIs, and Web3 libraries.
✅ Implement key management solutions (HD wallets, MPC, or hardware wallet support).
✅ Optimize gas costs, transaction batching, and fee estimation.
✅ Collaborate with frontend (React/React Native) and backend teams on API design.
✅ Ensure security best practices (e.g., protection against replay attacks, phishing).
✅ Research and prototype new blockchain integrations (Layer 2, ZK-rollups).
Required Skills:
🔹 3+ years in blockchain development (wallet projects preferred).
🔹 Expertise in Solidity (Ethereum) or Rust (Solana, Cosmos).
🔹 Experience with Web3.js, Ethers.js, or similar libraries.
🔹 Knowledge of cryptography (ECDSA, Schnorr, BIP-32/39/44).
🔹 Familiarity with node operation (Geth, Erigon, Bitcoin Core).
🔹 Understanding of security standards (e.g., audits, MythX, Slither).
Nice-to-Have:
🔸 Experience with MPC wallets or account abstraction (ERC-4337).
🔸 Contributions to open-source blockchain projects.
🔸 Knowledge of cross-chain protocols (LayerZero, Wormhole).
What We Offer:
🌍 Fully remote work with flexible hours.
💡 Opportunity to work on cutting-edge blockchain tech.
🚀 Collaborative team with deep crypto expertise.
How to Apply:
Submit your portfolio/CV via LaborX (include GitHub/LinkedIn if available). Highlight past wallet-related projects or smart contract audits.
