Next.js Development — App Router, SaaS Platforms, Headless eCommerce & More
Expert Next.js development — full-stack App Router applications, SaaS platforms with auth and billing, headless eCommerce with Shopify or WooCommerce, headless CMS integration, React SPA migration to Next.js, and dedicated Next.js development teams for businesses worldwide.
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Next.js Development Services We Deliver
From custom Next.js web applications and full-stack SaaS platforms through headless eCommerce, headless CMS integration, React SPA migrations, performance optimisation, and dedicated Next.js teams on an ongoing retainer.
Custom Next.js Web Application Development
End-to-end Next.js application development — App Router architecture, React Server Components, server actions, nested layouts, streaming rendering with Suspense, TypeScript throughout, and full-stack API routes. From marketing sites to complex data-driven web applications built on Next.js 14/15.
Next.js SaaS Application Development
Multi-tenant SaaS platforms built on Next.js — authentication and user management (NextAuth.js / Clerk), subscription billing (Stripe), role-based access control, dashboard UI, usage metering, team/organisation management, onboarding flows, and transactional email. Architected for scale from day one.
Headless eCommerce (Shopify / WooCommerce)
Headless eCommerce storefronts built with Next.js and the Shopify Storefront API, WooCommerce REST API, or custom backend — delivering sub-second LCP, full Lighthouse 100 scores, and design freedom beyond standard Shopify themes. Includes cart, checkout, product search, and customer account pages.
Headless CMS Integration
Next.js applications integrated with headless CMS platforms — Contentful, Sanity, Strapi, Prismic, DatoCMS, Storyblok, and WordPress (as headless via WPGraphQL). ISR for stale-while-revalidate content freshness at CDN edge. Preview mode for live content editing before publishing.
Next.js Enterprise Application Development
Enterprise-grade Next.js portals — SSO integration (SAML 2.0 / OIDC via Auth0 or Okta), fine-grained RBAC, audit logging, multi-tenant data isolation, ERP and CRM integration via REST/GraphQL, WCAG 2.1 AA accessibility compliance, and enterprise security hardening.
Next.js API Routes & Full-Stack Development
Full-stack Next.js with Route Handlers (App Router) — REST and GraphQL APIs, database access via Prisma or Drizzle ORM, server-side cron jobs, webhook receivers, file upload handling, third-party API orchestration, and Server Actions for form mutations directly from React Server Components.
Next.js 14/15, TypeScript & the Modern React Ecosystem
Next.js 14/15 App Router, React Server Components, TypeScript strict mode, Tailwind CSS, Prisma ORM, NextAuth.js / Clerk, Stripe, TanStack Query, Contentful/Sanity headless CMS, Playwright testing, and Vercel/AWS deployment.
Engagement Models for Next.js Development
Hire a dedicated Next.js team for an ongoing product roadmap, engage on a fixed-price project for a defined scope, or take out a monthly retainer for ongoing feature work and maintenance — whichever model fits your project and budget.
- SaaS products with ongoing feature roadmap
- Startups that need to scale engineering capacity fast
- Replacing an expensive local Next.js agency
- Enterprise portals requiring continuous development
Team available within 5–7 business days
- Next.js marketing site with headless CMS
- CRA / Gatsby → Next.js migration
- Headless Shopify storefront build
- Next.js MVP with defined feature set
Best for 6–20 week projects
- Post-launch Next.js applications needing ongoing work
- Next.js sites needing regular content and feature updates
- Version upgrades and dependency maintenance
- Flexible support without a full-time engagement
Start within 3–5 business days
Our Next.js Development Process
From architecture planning and component system design through sprint-based App Router development, API and database integration, testing and performance benchmarking, and Vercel deployment — with working demos at every stage.
We begin with a deep-dive into your requirements — application type, data model, user roles, rendering strategy per route (SSG, SSR, ISR, or client-only), third-party integrations, authentication requirements, and scalability targets. We produce a written architecture document covering App Router structure, data fetching strategy, database schema overview, API design, and deployment architecture before any code is written.
High-fidelity Figma mockups of all page templates and interactive states, designed with your brand system — typography, colour tokens, spacing scale, and component library. We design the full component inventory (buttons, forms, cards, tables, modals, navigation) before development begins, eliminating design ambiguity mid-sprint and preventing rework.
Feature development in two-week sprints on the Next.js App Router — React Server Components for data-fetching pages, client components scoped to interactive islands, server actions for mutations, nested layouts for persistent UI, and streaming with Suspense for progressive page loading. TypeScript strict mode, ESLint, Prettier, and Husky pre-commit hooks enforced from sprint one.
Route Handler development (REST or tRPC), Prisma or Drizzle ORM schema and migrations, authentication flows (NextAuth.js / Clerk / Auth0), Stripe subscription billing, headless CMS SDK integration, third-party API connectors, webhook receivers, background jobs (Inngest / Trigger.dev / cron), and email delivery (Resend / SendGrid).
Unit and integration testing with Vitest and React Testing Library, end-to-end testing with Playwright covering critical user flows (sign up, onboarding, checkout, core features). Lighthouse and Core Web Vitals benchmarking. WCAG 2.1 AA accessibility audit. Bundle analysis and code splitting optimisation. Sentry error tracking and performance monitoring configured before launch.
Vercel or preferred platform deployment with preview environments per PR, production deployment with rollback capability, custom domain and SSL, CDN caching configuration, environment variables and secrets management, uptime monitoring, and structured post-launch support period. For dedicated team engagements, development continues into the next sprint cycle immediately after launch.
What Our Next.js Clients Say
Trusted by SaaS companies, DTC brands, B2B platforms, and digital agencies across the US, UK, and Australia who need serious Next.js engineering capability without the cost of a local team.
1Solutions migrated our CRA single-page application to Next.js App Router in 10 weeks. The SEO impact was immediate — we went from near-zero indexing on our content pages to full coverage within 6 weeks of launch. Core Web Vitals went from red to green across the board. Our organic traffic has grown 140% in the six months since migration. They knew exactly what they were doing.
We needed a senior Next.js team to work on our SaaS product alongside our internal engineers. 1Solutions provided two full-stack Next.js developers who joined our GitHub, Slack, and daily standups from week one. They delivered more story points per sprint than our internal team and the code quality is outstanding. Eighteen months in, we have doubled our feature velocity at half the cost of hiring locally.
1Solutions built our headless Shopify storefront on Next.js with the Storefront API. Our previous Liquid theme scored 32 on mobile Lighthouse. The new Next.js storefront scores 98. Average page load dropped from 4.2s to 0.8s. In the first quarter post-launch, our mobile conversion rate increased 34%. The investment paid back in under 90 days.
Why Choose Us for Next.js Development
15+ years of React and Next.js experience, App Router native development, TypeScript strict mode on every project, green Core Web Vitals as a delivery standard, full-stack Next.js capability, and transparent delivery from an offshore team that works like an in-house one.
15+ Years React & Next.js Expertise
We have been building React applications since React 0.14 and Next.js applications since Next.js 9. Our developers have built production applications across every major Next.js version — from Pages Router with getServerSideProps through to App Router with React Server Components and Server Actions in Next.js 14/15.
App Router Native — Not Pages Router Leftovers
All new projects are built on Next.js App Router with React Server Components as the default. We don't retrofit App Router thinking onto a Pages Router architecture. Server Components, nested layouts, streaming, and Server Actions are how our developers think — not features we add later.
Full-Stack Next.js — Not Just Frontend
We build the full stack in Next.js — Route Handlers, Prisma database layer, NextAuth.js authentication, Stripe billing, file uploads to S3/R2, email delivery with Resend, and background jobs with Inngest. You get a cohesive full-stack codebase in one framework, not a fragmented microservices stack for a simple SaaS.
TypeScript Strict Mode on Every Project
TypeScript strict mode from project initialisation — no escape hatches, no any types, no shortcuts. Zod for runtime validation at system boundaries (API inputs, form data, external API responses). tRPC where it fits for end-to-end type safety from database to UI. Type safety is not optional on our Next.js projects.
Core Web Vitals as a Delivery Standard
Every Next.js project we deliver hits green Core Web Vitals (LCP < 2.5s, INP < 200ms, CLS < 0.1) before handover. We instrument Lighthouse in CI so performance regressions are caught in pull request review, not discovered post-launch. Performance is built in, not optimised as an afterthought.
SEO-First Architecture
SEO is an architectural decision in Next.js — it is determined by rendering mode, Metadata API implementation, structured data, canonical configuration, and sitemap generation. We make these decisions at project kickoff, not as an afterthought. Our Next.js migrations have never lost organic search traffic.
Vercel & Multi-Cloud Deployment Expertise
We deploy Next.js on Vercel (native, recommended), AWS (Amplify, ECS, Lambda@Edge), Cloudflare Pages, Railway, Render, and self-hosted Node.js. We know which platform is right for each project — Vercel for most SaaS and marketing sites, AWS for regulated enterprise, Cloudflare for global edge performance.
Transparent Delivery — No Offshore Surprise
Daily GitHub commits, weekly sprint demos of working features, documented architectural decisions, and a handover package at project close including architecture documentation, environment setup guide, deployment runbook, and test coverage report. You are never left with a black-box codebase from an offshore team.
Start Your Next.js Project
Tell us about your Next.js project and we will schedule a free technical discovery call. Whether you need a headless marketing site, a SaaS MVP, a headless eCommerce storefront, a React SPA migration, or a dedicated Next.js development team — our engineers will scope your project and give you a transparent quote within 24 hours.
Free technical discovery call with a senior Next.js architect
Architecture recommendation — App Router, rendering strategy, database, deployment
Next.js 14/15 App Router native — React Server Components and Server Actions
TypeScript strict mode and Core Web Vitals green as standard on every project
Response within 24 business hours from our Next.js engineering team
Tell Us About Your Next.js Project
Next.js Development — Frequently Asked Questions
Everything you need to know about Next.js development with 1Solutions — why Next.js, App Router vs Pages Router, full-stack usage, databases, SEO, timelines, migrations, and deployment.