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Implementation:
- Implement components across the on-chain transaction lifecycle: calldata construction, signing requests, nonce management, L2 submission, and finality confirmation.
- Build new features within the institutional custody signing pipeline, including submission paths, asynchronous transaction handling, and throughput management.
Integrations:
- Implement payment integrity controls such as commitment-hash verification and co-signer policy evaluation.
- Extend existing Solidity smart contracts following upgrade-safety, storage-layout, and role-based governance conventions.
- Contribute to custody authorization policy integrations and co-signer agents.
Testing and Maintenance:
- Write comprehensive automated tests for backend services and smart contracts.
- Participate in an on-call rotation, independently resolving known issue patterns and escalating novel failure modes.
- Build structured audit-trail logging that tracks transactions from origination through on-chain execution.
Cari
Cari is building blockchain-based payment infrastructure that enables real-time, 24/7 movement of digital money across traditional financial institutions and the digital asset ecosystem. As a pre-launch startup, they offer a remote-first environment with close collaboration from an experienced founding and engineering team.