Blockchain Engineer

📋 Description

• Implement on-chain tx lifecycle components (calldata, signing, nonce, finality)
• Build features in custody signing pipeline (submission paths, async handling)
• Implement payment integrity controls (commitment-hash, co-signer policy)
• Extend Solidity contracts with upgrade-safety, storage layout, governance
• Contribute to custody authorization integrations and co-signer agents
• Build audit-trail logging from origination to on-chain execution

🎯 Requirements

• 3-5 years backend software engineering
• 1-2 years hands-on with EVM-compatible blockchains
• Strong proficiency in TypeScript
• Understanding EVM tx mechanics: ABI encoding, nonce, gas, revert, events
• Production experience developing or maintaining Solidity smart contracts
• Familiarity with upgradeable proxy patterns (UUPS) and OpenZeppelin

🎁 Benefits

• Competitive compensation.
• Remote-first working environment.
• Opportunity to help build new financial infrastructure.
• Close collaboration with an experienced founding and engineering team.
• Meaningful influence over the product at an early stage.