/ 01 — The problem
What was broken.
8-second initial loads, 4MB JS bundles, charts that froze the page. Sales team was apologizing for the product before showing it. Engineering velocity had slowed to a crawl.
←Back to work
/ 05vintura·2022 — 2023
Web app rewrite · 2023
Vintura.
Rewrite of a B2B analytics dashboard from a legacy Angular monolith to a focused React app — 3× faster on every metric.
// previewVintura
faster LCP3.5×
bundle reduction57%
chart rendering60fps
NPS delta+14
/ 02 — The approach
How I tackled it.
Migrated incrementally — kept the legacy app running while replacing one route at a time. Adopted Vite for the build, TanStack Query for data, Recharts for viz. Established a 200KB-per-route budget enforced in CI. Rebuilt the chart kernel for virtualization.
/ 03 — The outcome
What shipped.
1.8s LCP (was 8s). Bundle 1.7MB (was 4MB). Chart frame rate locked at 60fps even at 100k data points. NPS jumped 14 points.
/ Like what you see?