Modern Web App Engineering

The choice depends on three factors: how frequently your content changes, whether pages need to be SEO-indexed, and whether content is user-specific. Static pages with infrequent updates are best served with SSG for maximum speed and minimal infrastructure cost. Pages requiring real-time or personalized data use SSR. ISR gives us the speed of static delivery with the flexibility to update content on a schedule or on demand — without a full rebuild. Most production applications we build combine all three strategies at the page or component level.

Our 0.8s LCP, sub-100ms INP, and 0.01 CLS figures come from deliberate architectural choices made early — selecting the right rendering strategy, optimizing JavaScript bundle size, deferring non-critical resources, and eliminating layout-shifting elements at the component level. We validate against real-user conditions, not just controlled Lighthouse runs.

Performance under load requires infrastructure decisions alongside frontend ones. We implement CDN caching for static and ISR pages, right-size server resources for SSR workloads, and establish autoscaling policies before production launch. Monitoring is configured from day one so degradation is caught before users notice it.

Yes. We begin with a technical audit to identify performance bottlenecks, outdated dependencies, and architectural constraints. From there we define a phased migration path — typically moving to a modern framework incrementally rather than a full rewrite — so the product remains live and functional throughout the process.

Security is built into the architecture from the start. This includes authentication and session management design, dependency auditing, input sanitization across both server and client layers, secure deployment pipelines, and environment-specific access controls. For applications handling sensitive data, we layer in encryption, token validation, and cache-control policies to prevent exposure.

Scope drives timeline. A focused product with defined requirements and a clear architecture can reach production in eight to twelve weeks. Larger enterprise systems with integrations, custom design systems, and compliance requirements typically run over a longer horizon. We define the roadmap during the discovery phase so there are no surprises after work begins.