Overview
What this challenge is about.
Design the event model: 12-15 events covering the warehouse lifecycle. Implement using EventStoreDB (or Kafka + a snapshotting projection layer) in Go or C#. Build at least 3 read-side projections: real-time-availability, audit trail, daily reconciliation. Cover idempotent event handling and snapshot strategy (every 1000 events per aggregate). Provide a migration plan: backfill events from current state for the past 90 days + parallel-run for 30 days. Deliver source code, a 10-page writeup, and the migration plan.
The Brief
What you'll do, and what you'll demonstrate.
Replace a state-only inventory database with an event-sourced + CQRS system that preserves full audit history and supports 3 named read-side projections.
Earning criteria — what you'll demonstrate
- Model a real-world domain as an event stream with clean aggregate boundaries
- Implement CQRS with multiple read-side projections from the same event log
- Apply snapshotting and event-replay correctly under realistic event volume
- Plan a state-to-event migration with verifiable parallel-run
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Skills
Skills you'll demonstrate.
Each one shows up on your verified credential.
Careers
Roles this prepares you for.
Real titles. Real skill bridges. Pick the one closest to your trajectory.
Career mappings coming soon.