WEB DESIGN & BUILD

Websites,
beautifully built.

Cinematic websites and ecommerce stores that look stunning on every screen — and are engineered by a performance marketing team to load fast, rank well and convert the traffic you pay for.

PLATFORMS
Shopify, Shopify Plus, Next.js, headless
FOCUS
Design, speed, SEO & conversion
BUILT FOR
Ecommerce, B2B, services, launches
EXTRAS
Motion, 3D, AI features, integrations

IN SHORT

Nu Growth Theory is a web design and development agency that builds marketing websites and ecommerce stores on Shopify, Shopify Plus and Next.js. Every site is designed for brand impact and engineered for performance: fast load times, strong Core Web Vitals, SEO and AI-search-ready structure, clean tracking and conversion-focused landing pages that make paid media more profitable.

What makes a great business website?

A great website does three things at once: it makes your brand instantly credible, it loads fast on any device, and it guides visitors clearly towards buying, booking or getting in touch. Beautiful design without speed and structure loses customers; a fast site without a strong brand fails to persuade them.

Because we run paid media every day, we design websites from the traffic backwards: what visitors were searching for, what they need to see in the first few seconds, and which page elements actually move conversion rate. Design and performance are decided together, not handed between separate teams.

Our web design and development services

We design and build marketing websites, ecommerce stores, landing pages and web apps — from brand-new launches to redesigns of sites that have outgrown their theme.

Marketing websites

Brand-led websites for B2B, services and professional firms, with motion design, clear messaging and lead capture that connects to your CRM.

Ecommerce stores

Shopify and Shopify Plus stores with fast collection pages, persuasive product pages and a checkout that converts.

Headless & Next.js builds

Custom front ends on Next.js for brands that need more speed, flexibility or interactivity than a theme can offer.

Landing pages for paid media

High-converting landing pages built for specific campaigns, audiences and offers — tested and iterated.

Website redesigns & migrations

Moves from WordPress, Wix, Squarespace or legacy platforms with SEO-safe redirects and no lost rankings.

Interactive & 3D experiences

Scroll-driven storytelling, product configurators and WebGL moments that make a brand memorable — without slowing the site down.

Shopify vs a custom Next.js website: which is right for you?

Shopify is usually the best choice for ecommerce brands that want a reliable, secure checkout and an easy admin for their team. A custom Next.js site suits brands that need unique experiences, complex content, very high performance or integrations a theme can't handle. Headless Shopify combines both: Shopify's checkout and admin with a custom Next.js front end.

  • Shopify / Shopify Plus — fastest route to a robust store, huge app ecosystem, easy to manage
  • Next.js — maximum design freedom, speed and flexibility for marketing sites and web apps
  • Headless Shopify — custom front end and storytelling with Shopify's checkout and back office
  • WordPress — still a good fit for content-heavy sites when kept lean and well maintained

Why website speed and Core Web Vitals matter

Website speed affects conversion rate, ad costs and search rankings. Core Web Vitals are Google's measures of real-world loading speed (Largest Contentful Paint), responsiveness (Interaction to Next Paint) and visual stability (Cumulative Layout Shift), and they are part of how Google evaluates page experience.

We build for speed from the start: optimised images, minimal scripts, modern frameworks, server-side rendering and careful use of animation, so rich motion design doesn't come at the cost of performance. Paid campaigns also benefit, because faster, more relevant landing pages tend to improve conversion rates and landing page experience in Google Ads.

SEO- and AI-search-ready websites

An SEO-ready website is built so search engines and AI assistants can crawl it, understand it and trust it. That means clean URL structures, fast pages, logical headings, internal linking, structured data (schema.org), XML sitemaps and content that directly answers the questions customers ask.

We also plan for generative engine optimisation (GEO): clear, quotable answers, consistent business information and well-structured FAQs that help tools like Google AI Overviews, ChatGPT and Perplexity understand and cite your brand.

  • Technical SEO foundations and Core Web Vitals
  • Schema markup for organisation, products, services, FAQs and reviews
  • SEO-safe migrations with full redirect mapping
  • Content architecture based on real search demand
  • Analytics, GA4 and conversion tracking set up from day one

Conversion rate optimisation (CRO) built in

Conversion rate optimisation is the process of increasing the percentage of visitors who buy, book or enquire. We bake it into the design process — clear value propositions, social proof, frictionless forms, fast checkout and mobile-first layouts — and keep improving after launch with testing and analytics.

Because we see your ad and search data, we know which pages and messages bring the most valuable visitors, and we design those pages to do the heavy lifting.

Motion design and interactive websites

Motion design uses animation — parallax, scroll-triggered reveals, smooth transitions and subtle micro-interactions — to guide attention and make a website feel premium. Done well, it helps people understand your product faster; done badly, it slows the site and distracts.

We use motion with purpose and with performance budgets, and every animation respects visitors' reduced-motion preferences for accessibility.

Adding AI features to your website

Your website can do more than display information. We add AI features where they genuinely help: booking and enquiry agents, product finders and quizzes, smart search, personalised recommendations and automated lead qualification that routes enquiries straight into your CRM.

How much does a website cost, and how long does it take?

Website cost depends mainly on the number of unique page designs, the platform, integrations, content and any custom functionality. A focused marketing site or landing page set takes weeks; a full ecommerce build or headless platform takes longer. We give a fixed scope and quote after a short discovery call, so there are no surprises.

What's included

01

Discovery & strategy

Goals, audiences, competitors and search demand mapped before design starts.

02

UX & visual design

Wireframes, design system and high-fidelity designs for every key template.

03

Development

Shopify, Next.js or headless builds with clean, documented code.

04

SEO & tracking

Technical SEO, schema, redirects, GA4 and conversion tracking.

05

Content & motion

Copywriting support, photography direction and purposeful animation.

06

Launch & optimise

QA across devices, performance tuning and ongoing CRO.

How we work

  1. 1

    Discover

    Understand your brand, customers, traffic and goals.

  2. 2

    Design

    Wireframes, then high-fidelity designs you can click through.

  3. 3

    Build

    Develop, integrate and test on fast, modern infrastructure.

  4. 4

    Launch & grow

    SEO-safe go-live, then continuous testing and improvement.

Frequently asked questions

Do you design and build Shopify stores?

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Yes. We design and develop Shopify and Shopify Plus stores, including custom themes, apps integration, migrations and headless Shopify builds.

Will a redesign hurt my SEO?

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Not if it's planned properly. We map every existing URL, set up 301 redirects, preserve important content and monitor Search Console after launch to protect rankings.

Can you migrate my site from WordPress?

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Yes. We regularly migrate from WordPress, Wix, Squarespace, Magento and custom platforms, with redirects and content migration handled for you.

How fast will my new website be?

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We build to strong Core Web Vitals targets and test on real devices. Exact speed depends on content and third-party scripts, which we help you keep lean.

Can I update the website myself?

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Yes. We set up an easy content management system for your team, or a simple file-based workflow if updates are rare.

Do you write the content?

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We can. Our copy is written for both people and search engines, based on real customer questions and search data.

Do you offer website hosting and maintenance?

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Yes. We host on fast, secure global infrastructure and offer ongoing maintenance, updates and optimisation.

START WORKING WITH US

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