Recorded session on tracing in event-driven systems, and why dashboards lie to you.

Sub-50ms p99 across 12M embeddings. Demo includes the index tuning that got us there.

Cut build times 34m → 6m. Video breaks down the caching layer and where the wins actually came from.

Parser, planner, vectorized executor. Screencast of building the cost model, mistakes included.

CRDT-backed editing with offline sync. Walkthrough of conflict resolution under bad network conditions.

Core money-movement backend for a fintech serving ~3M users across 70+ countries, regulated by FinCEN & FINTRAC. I own the wallet & ledger systems, payment-provider integrations, reconciliation, and virtual accounts & cards — where a mismatch isn’t a bug, it’s someone’s money.