Senior Blockchain Engineer (5+ Yrs)

We are looking for a Senior Blockchain Engineer to join us on a long-term basis, with a commitment of at least one year to our project. This is a foundational role - you won't just be writing code; you'll design and architect the fundamental logic. What you'll do: - Design, develop, and audit highly secure, gas-optimized smart contracts using Solidity. - Architect robust payment gateways and seamless authentication integrations to deliver a frictionless Web3 user experience. - Lead the end-to-end design and development of our dApp. - Drive key technical decisions, establish best practices, and lay the groundwork for scaling our team. What you bring to the table: - Expert-level Solidity: Deep mastery of smart contract security patterns, upgradeability, and advanced gas optimization techniques. - Strong standards knowledge: Extensive experience with solidity, alongside proficiency with Web3 tooling (ethers.js/web3.js, Hardhat and/or Foundry). - Full-stack prowess: Proven commercial experience building modern web applications with React, Next.js, and Node.js. - Autonomous leadership: You thrive in ambiguity, take ownership of complex foundational work.