Increasio Logotype
Next.js and React frontend development services

Web, Commerce, and AI Development Services

React, Next.js, and Svelte experts. One team for design, frontend, headless CMS, commerce, AI visibility, and taking AI features to production.
Experienced developers

Experienced developers

We will design and develop a website and application and launch it for you. We achieve this by developing and building beautiful websites, landing pages, and applications that 100% embody and represent our client's brands. Our code is based on internal high-quality standards. Thus, our developments are secure, reliable, and scalable.

One team for design, frontend, and headless backends

We build production frontends on Next.js 16, React, and Svelte - with the headless CMS, commerce, and infrastructure layers wired in. Every service on this page is delivered by the same team that ships Next.js 16 Turbopack apps, Shopify Hydrogen storefronts, and enterprise headless CMS implementations. Start with a brief, get a fixed-scope estimate in 48 hours.
Get recommended by ChatGPT, Perplexity, and AI Overviews

AI-search visibility (GEO)

Get recommended by ChatGPT, Perplexity, and AI Overviews

SEO got you ranked; GEO gets you recommended. We restructure your content, structured data, and sources so AI assistants cite you, and report your AI share of voice monthly. GEO services.
Stores AI shopping agents can find and buy from

Agentic commerce

Stores AI shopping agents can find and buy from

Structured product feeds, Schema.org markup, and low-friction checkout, so AI shopping assistants can find, recommend, and buy from your store, whoever built it. Agentic commerce readiness.
Next.js 16 Development

Built on Next.js 16

Next.js 16 Development

Production Next.js 16 apps built on App Router, Server Components, Turbopack, and Partial Prerendering. We take projects from Figma to shipped product - marketing sites, SaaS dashboards, and enterprise applications. Vercel partner agency. See our Next.js services.

Next.js developers

Jamstack, ISR, and PPR

Modern static and hybrid

Jamstack, ISR, and PPR

Static-first delivery with dynamic holes where you need them. We build on Next.js 16 ISR and Partial Prerendering so marketing pages stay instant while product surfaces stay live. Edge caching, CDN, and Core Web Vitals out of the box.
Shopify Hydrogen & Storefront API

Headless commerce

Shopify Hydrogen & Storefront API

Custom, high-performance storefronts on Shopify. We work with Hydrogen (Remix) when it fits, and build Next.js frontends on the Shopify Storefront API when you want React and Server Components. Medusa also available for fully custom commerce. Shopify Hydrogen development - Shopify experts.

Shopify Hydrogen development

AI features shipped, not stuck

From prototype to production

AI features shipped, not stuck

We take what you've started (an internal chatbot, an agent workflow, a Lovable/v0 prototype) and ship it: typed code, tests, CI, auth, rate limits, monitoring, and human-in-the-loop governance. We also build production-grade MVPs from scratch. AI features to production.

AI features to production

More specialist services

Deeper pages on the platforms and services we work with.

  • Contentful

    Contentful implementation, integrations, and migrations from legacy CMSs.

    Contentful development

  • DevOps and infrastructure

    CI/CD, infrastructure as code, Kubernetes, and cloud cost optimization for the apps we ship.

    DevOps services

  • Free Next.js tools

    Site and AI-visibility auditor, headless CMS picker, hosting cost calculator, and next.config.js generator. No signup.

    Try the tools

  • Strapi CMS

    Strapi setup, custom roles, and content models - wired into a Next.js 16 frontend with Server Components data fetching.

    Strapi development

  • Gatsby to Next.js migration

    Support for existing Gatsby sites, and a planned migration to Next.js 16 when a project has outgrown static generation, with URLs and rankings preserved.

    Gatsby developers

  • Jamstack development

    Static-first, composable websites on Next.js and a headless CMS.

    Jamstack development

  • Case studies

    Projects with measured results: Lighthouse scores, speed gains, and infrastructure savings.

    See our work

  • Web development

    Marketing sites and landing pages on Next.js 16. Fast, SEO-ready, and easy to edit via headless CMS.

    Next.js website development

  • Shopify development

    Shopify theme, Hydrogen, and Storefront API work. Headless stores that load in under a second.

    Shopify development company

  • Frontend Development

    React, Next.js, and Svelte frontends for any backend. Figma to production with design, frontend, and DevOps in one team.

    Frontend development with Next.js

Svelte & SvelteKit Development

When Svelte wins

Svelte & SvelteKit Development

Smaller runtime, compile-time optimisation, great for content-heavy sites and interactive UIs. We build SvelteKit apps end-to-end and integrate them with headless CMS and commerce backends. Svelte development.

Svelte developers

Headless CMS Implementation

Enterprise content

Headless CMS Implementation

Strapi, Sanity, Payload, Hygraph, and Contentful - wired into a Next.js 16 frontend with Server Components data fetching. We set up content models, preview workflows, and roles so marketing ships without waiting on engineering. Headless CMS services.

Headless WordPress

What's included in every engagement

Design, frontend, commerce, and infrastructure in one team. AI-assisted delivery where it speeds us up, senior humans where it matters.

Payments integration

Stripe, Shopify, and custom gateways. PCI-safe, idempotent, and instrumented.

Support

Same-team support after launch. Most client requests answered within 24 hours.

Design

Figma design or design-to-code from your existing files. Brand-accurate UI that ships without a second agency.

Custom development

Next.js 16, React, and Svelte built to your spec. Server Components, Suspense, and real typing - not boilerplate.

SEO and GEO

Technical SEO baked in: Metadata API, structured data, sitemaps, and Core Web Vitals, plus llms.txt and content patterns AI assistants can cite. More on GEO.

AI-assisted delivery

AI in design, code generation, and QA where it compresses timeline without compressing quality. Pricing reflects the savings.

Code quality

Typed, reviewed, and covered by CI. Your next team can read it - that is the real test.

Advanced integrations

CRM, ERP, analytics, auth, AI APIs. We ship the API layer alongside the frontend so nothing stalls in handoff.

Web Design And Development Services

Find us by location:

New York
79 Madison Ave Suite 703, New York, NY 10016

Testimonials

We have worked with hundreds of amazing people

Increasio team is awesome!

I enjoy working with Paul, Dima, and Nick, month to month they go beyond services we agreed and do great job on my business.

Felix B.

Professional Developers

Increasio team are professional and proficient Headless Shopify developers. They accommodated all my requests and revisions. I'm very pleased with work. I would definitely work with again and recommend their services.

Nat J.

High Quality

Pleasure to work with Increasio. Quality work with great results delivered. Always available to discuss the project, plenty of useful advise on site optimization but most of all really great results delivered. Good team and great persons. Hope to work long-term.

Nick S.

Thanks for all the good work

It was a delight to work with Increasio team! The website they did for our agency and some of my clients has resulted in an increase of revenue and many happy clients.

Simon A.

Increasio team is awesome!

I enjoy working with Paul, Dima, and Nick, month to month they go beyond services we agreed and do great job on my business.

Felix B.

Professional Developers

Increasio team are professional and proficient Headless Shopify developers. They accommodated all my requests and revisions. I'm very pleased with work. I would definitely work with again and recommend their services.

Nat J.

Let's scope your project

Send us a brief and we will return a fixed-scope estimate within 48 hours.
Let's scope your project