$400M Infrastructure Migration

Problem

Migrate critical staking infrastructure without breaking live consumers across a distributed validator network.

Context

4 engineering squads, 8+ partner integrations, distributed validator technology powering $400M+ in staked assets.

Constraints

Zero-downtime requirement, backward compatibility across 3 platform releases, live production consumers who couldn't tolerate breaking changes.

Approach

Designed a phased rollout strategy — scoped interface stability requirements first, then sequenced feature work around dependency maps. Defined API requirements and interface contracts for all partner integrations before touching infrastructure.

Metrics

50% reduction in partner escalations

40% reduction in time-to-first-integration

Zero downtime during migration

3 platform releases shipped on schedule

Lessons

Sequence interface stability before feature work

Map dependencies before they become blockers

Partner escalation rate is the real integration quality metric