Web App Development

Next.js adds server-side rendering (SSR), static site generation (SSG), incremental static regeneration (ISR), and API routes on top of React. This means better SEO because search engines see fully rendered HTML instead of an empty div waiting for JavaScript to load. Initial page loads are faster because the HTML arrives ready to display, and built-in API routes mean you don't need a separate backend for simpler use cases. Next.js also provides automatic code splitting, image optimization via the Image component, and middleware for authentication and redirects. For pure client-side apps behind authentication where SEO doesn't matter (admin dashboards, internal tools), plain React with Vite is perfectly fine and lighter-weight. But for customer-facing products where search rankings, social sharing previews, and page speed matter — which is most businesses — Next.js delivers measurable advantages out of the box.

We set performance budgets at the start of every project and enforce them automatically in CI so regressions are caught before they reach production. Our targets: Lighthouse performance score above 90, First Contentful Paint under 1.5 seconds, Largest Contentful Paint under 2.5 seconds, Time to Interactive under 3 seconds, and Cumulative Layout Shift under 0.1. We achieve these through code splitting (dynamic imports for heavy components), image optimization (automatic WebP/AVIF conversion via Next.js Image or Sharp), lazy loading for below-the-fold content, font subsetting and display swap, tree-shaking unused dependencies, and edge caching with CDN distribution. Every pull request runs automated Lighthouse CI checks, and we use tools like Bundle Analyzer to track JavaScript bundle sizes over time. For data-heavy applications, we implement virtualized lists, pagination, and optimistic UI updates to keep interactions feeling instant.

Yes — we regularly join existing projects and integrate with established teams. We start with a thorough codebase audit covering architecture patterns, dependency health (outdated or vulnerable packages), test coverage gaps, performance baselines, and technical debt hotspots. This typically takes 3-5 days and produces a prioritized improvement roadmap. From there, we integrate with your team's existing workflow: branching strategy (GitFlow, trunk-based), CI/CD pipeline, code review process, and communication tools. We follow your conventions for naming, file structure, and testing patterns rather than imposing our own. For legacy applications, we can incrementally migrate from older frameworks (jQuery, AngularJS, Create React App) to modern stacks like Next.js or Vite — page by page, without a risky full rewrite.