Enterprise admin panels grow sideways: dozens of pages, each slightly different, all sharing auth, data tables, forms and permissions. On a 73-page panel for managing wind and solar power plants, a flat component tree would have collapsed within months. The modular approach held up.
Modules, not layers
Code is organized by domain module — each with its own components, state slices, API hooks and types — instead of one global components folder. A change to the plants module cannot ripple into unrelated billing screens.
State management as a performance tool
Unnecessary re-renders are the silent killer of large React apps. Normalized Redux slices, memoized selectors and colocated state cut wasted renders and lifted page performance by roughly 30% — measured, not guessed.
Design system over one-off UI
Shadcn-based primitives plus a small set of composed patterns keep 73 pages visually and behaviorally consistent, and make multilingual layouts (including RTL considerations) a configuration detail rather than a rewrite.
TypeScript strictness pays rent
Resolving type issues and tightening safety across the panel caught entire classes of runtime bugs at build time — the cheapest place to fix them.
Scale is a design input, not a surprise. Treat page 73 as inevitable from page one.
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