Build Ramp's stablecoin-based payment and treasury infrastructure

Ramp is building a dedicated stablecoin engineering effort to make its card issuance and treasury flows faster and cheaper, and wants a backend engineer with real stablecoin/blockchain payment-rail experience. This interview leans on distributed-systems judgment for eventually-consistent systems, security-sensitive transaction/wallet design, and production experience integrating external financial partners.

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What this interview tests

Stablecoin, blockchain payment rail, and wallet infrastructure
Eventually consistent distributed systems design
Security-sensitive systems: key management, transaction/wallet security
On-chain settlement mechanics: finality, confirmation, fees/latency tradeoffs
Cloud infrastructure and IaC (AWS/GCP/Azure, Terraform)
Integrating external financial/crypto providers in production

Common question themes

Design a secure stablecoin payment or treasury flow integrating an external provider

Reason about settlement finality and confirmation guarantees in an eventually consistent system

Handle key management and wallet security for a production financial system

Debug or design around chain-level tradeoffs (fees, latency, congestion)

Build for a highly regulated, mission-critical fintech environment

Partner with external stablecoin/crypto providers to deliver an end-to-end flow

How candidates describe it

Real Software Engineer interview stories — retold from candidates' public write-ups, with sources.

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