Senior Blockchain Engineer

At least 4 years of experience in blockchain development (preferably on EVMs), or 4+ years in backend development with at least 2 year in smart contract programming. Proficient in Solidity and familiar with EVM chains and gas optimization techniques. Experienced in upgradeable contract patterns (Proxy, EIP-1967, Diamond/EIP-2535). Deep understanding of token standards: ERC-20, ERC-721, ERC-1155, ERC-2612 (Permit), ERC-3643. Proficient with Git, and clean documentation practices. Comfortable reading technical specifications such as ERCs, EIPs, and whitepapers. Strong team player with experience collaborating with product and Backend teams, including code reviews and architecture discussions. Nice to have: Experience working with Ripple/XRP Ledger: Trustline, Token Issuance, Hooks, or Xahau. Nice to have: Knowledge of Decentralized Identity (DID) and Verifiable Credentials (VCs). Nice to have: Familiarity with other blockchain ecosystems: Solana, Polkadot, Cosmos, etc. Nice to have: Have contributed to open-source blockchain projects is an advantage. Nice to have: Experience writing unit tests and fuzzing tests with Hardhat, Foundry, or similar frameworks. Nice to have: Understanding of crypto knowledge like hashing, ECDSA, Merkle Trees. Nice to have: Solid grasp of common blockchain vulnerabilities: reentrancy, overflows, front-running, oracle manipulation, etc.