Own reliability and scale of Ramp's compute/storage/messaging infra as it moves to a cellular architecture

Ramp's Production Engineering team is infrastructure-generalist software engineers who take end-to-end ownership of reliability and scalability across compute, storage, messaging, and observability — not a siloed 'infra team.' A headline initiative in this JD is the company's move to a cellular architecture to support international scale, regulated environments (FedRAMP), and enterprise SLAs.

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What this interview tests

Distributed systems reliability at production scale
On-call ownership and root-cause incident response
Cellular / multi-tenant architecture tradeoffs
Observability (SLOs, error budgets, alerting)
Cross-team architectural ownership and golden paths

Common question themes

Tell me about a reliability or scalability problem you proactively found and drove to resolution

Walk through a production incident: root cause, fix, and how you prevented recurrence

How would you reason about migrating a monolithic service to a cellular architecture

Describe a self-service tool or golden path you built for other teams

How do you decide when to go fast versus slow down on an infrastructure change

How candidates describe it

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

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