Blockchain Engineer

Implement payment transaction lifecycle components, signing pipeline features, Solidity smart contract extensions, custody authorization integrations, audit trails, asynchronous transaction queues, tests, and on-call support.

Responsibilities

• Implement transaction lifecycle components
• Build signing pipeline features
• Implement payment integrity controls
• Extend Solidity smart contracts
• Contribute to custody platform authorization policy integration
• Build structured audit trail logging
• Contribute to the asynchronous transaction queue
• Write high-coverage tests
• Participate in on-call support

Requirements

• 3–5 years of backend software engineering experience
• 1–2 years working directly on EVM-compatible blockchain systems
• TypeScript
• EVM transaction mechanics
• Solidity smart contract development
• Upgradeable proxy patterns
• OpenZeppelin contract libraries
• Idempotency
• At-least-once delivery
• Crash recovery
• Async systems

Benefits

• Competitive compensation
• Remote-first work environment
• Opportunity to shape a market-defining protocol with an experienced founding team
• Meaningful influence over product design at the earliest stage