React architecture & performance review
Find out what is actually slow, and why.
When a React app slows down — in the browser or in the release cycle — the causes are usually structural: components that re-render far more than they need to, a bundle that grew without anyone watching, state that lives in the wrong places, an upgrade that keeps getting deferred. A review finds those causes and puts numbers on them.
What we examine
- Rendering behavior. Profiler traces of your heaviest screens: which components re-render, how often, and why — unstable prop identities, context overuse, missing memoization, effects that cascade.
- Bundle composition. What actually ships to the browser: entry-point weight, code-splitting boundaries, duplicate dependencies, dead code, and what each route pays on first load.
- Core Web Vitals. Field data (CrUX, your RUM if you have it) alongside lab traces, so the work targets what real users experience — LCP, INP, and CLS — not just what a laptop Lighthouse run says.
- State management. Where state lives and whether it should: server cache vs. UI state, prop drilling vs. context vs. store, and the render cost of the current arrangement.
- Component APIs and structure. How the component tree is factored, where abstractions have leaked, and which components make every feature slower to build.
- Upgrade posture. React version, framework and build tooling, TypeScript coverage, and dependency risk — what stands between you and current React, and in what order to clear it.
What you get
A written report with findings ranked by user and developer impact, each with the evidence behind it (traces, bundle maps, field data) and a concrete remediation. We walk your team through it in a working session and leave the raw material with you.
How it runs
Reviews are hourly, scoped in an initial conversation — the depth depends on the size of the codebase and what is hurting. Some teams take the report and run; others have us execute the plan or join the team to see it through. Both are fine. The report is written so it stands on its own.
Tell us what is slow and we will suggest a scope.