Blockchain developer (DAML / Canton, remote worldwide): what 2 proof signals get you shortlisted in a 10-second screen?

I posted a Blockchain Developer (DAML / Canton) role — remote worldwide. It’s clearly not a generic “blockchain dev” screen; the signal is closer to workflow modeling, ledger permissions, multi-party state transitions, and production judgment.

If you were screening this in 10 seconds, what 2 proof signals would you want to see?

Pick any two and explain in one line: repo + tests, workflow PoC, authorization model, incident write-up, monitoring/observability, threat model, audit-style reasoning, transaction-flow design, privacy/permissioning understanding.

Bonus: what 3 questions would you ask about ledger modeling, failure handling, and real-world workflow complexity?

Job link: https://artofblockchain.club/job/blockchain-developer-daml-canton