Next.js Agency
Next.js Agency for SEO-strong web apps
We're a Next.js agency from North Rhine-Westphalia that uses Server Components, App Router and edge rendering consistently for visibility, conversion and maintainability. From greenfield products to migrating legacy React apps, we deliver frontends that hold up in Google and AI search.
Why nextlevels as your Next.js agency?
Server Components without the hype risk
App Router and React Server Components are standard — we know streaming, Suspense and Partial Pre-Rendering from production, not from demo repos.
SEO and performance by default
Core Web Vitals, structured data, sitemap generation and Lighthouse budgets are part of the delivery — not an optional phase two.
TanStack integration at eye level
We solve complex data UIs with TanStack Query, Router and Table — consistent patterns for cache, pagination and optimistic updates.
Safe deployments and observability
CI/CD with preview deployments, Sentry integration, structured logging and performance tracking — releases become predictable instead of nervous.
Our Next.js services
Greenfield products
Marketing sites, SaaS frontends and customer portals on Next.js 16 with App Router, Server Actions and TypeScript. Architecture, design system and data layer from one source.
Migration & modernisation
From Create-React-App, Gatsby or Next.js Pages Router to App Router. We plan route-by-route transitions without downtime and with measurable performance gains.
Headless commerce & CMS
Next.js as a frontend for Shopware, Strapi, Sanity, Storyblok or our own NextCMS — including ISR, webhooks and preview modes for editors.
Performance & SEO audits
Lighthouse audits, bundle analysis, render strategy and structured data. Clear recommendations with effort and expected impact.
The stack we pair with Next.js
Next.js is never alone. We combine it with the stack that fits your product: TanStack Query/Router/Table for data, Tailwind and Radix for UI, Shopware or Strapi as a backend, Vercel or our own container pipelines for deployment, Sentry and PostHog for observability.
Next.js is built on React – as a React agency we bring the component, state and testing practice that holds up even without a framework.
Frequently asked Next.js agency questions
Your question isn't here? Ask us directly
What is Next.js best suited for today?
Is migrating from Pages Router to App Router worth it?
Why nextlevels instead of a freelancer team?
How do you integrate TanStack into Next.js projects?
Which hosting options do you recommend for Next.js?
Ready for a Next.js project?
Send us a short message about what you have in mind — we'll get back to you within one business day with concrete next steps.
Start a request