Web platforms built to perform, scale, and last

A web platform is only as good as the engineering behind it. We build fast, accessible, technically rigorous platforms that work brilliantly for users and give your business the foundation to grow.
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Fast to load, hard to break, easy to scale

We build web platforms
 that hold up as you grow

We combine technical excellence with deep understanding of the experience your platform needs. We build with performance, accessibility, and maintainability as core requirements, not afterthoughts.

Our web development service capability

We take a performance-first, accessibility-led approach to web development, working with your design and product teams to build platforms that are fast, reliable, and built to grow with your business.
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Front-end development

Pixel-perfect front-end development built with React, Next.js, and Vue, optimised for Core Web Vitals and accessibility.

Back-end development

Robust, scalable back-end systems built with Node.js and Python that power your platform reliably under real-world load.
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Full-stack development

We build across the full stack, ensuring every layer works together as a coherent, well-engineered whole.
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CMS integration & development

We integrate and build on leading CMS platforms so your content teams can manage without developer involvement.
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eCommerce development

High-performance eCommerce platforms built to sell, using Shopify, WooCommerce, and custom solutions.
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Progressive web apps

We build PWAs that combine browser reach with native app quality, working offline and installing to the home screen.

API integration

We integrate your platform with the services and APIs your business depends on, building robust, well-tested connections.
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Performance optimisation

We audit, diagnose, and fix performance issues, applying the improvements that measurably move your Core Web Vitals.
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Accessibility engineering

We build to WCAG 2.2 standards, treating accessibility as an engineering discipline, not a compliance checkbox.
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Web application security

We apply security best practices from input validation to the OWASP Top 10 across every layer of your web platform.
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Atomic helped us translate our ambition into a solid technical plan. Their advice gave our internal team the insight they needed to scale fast and optimise spend.

We succeed together

How we built a No.1 app 
for Center Parcs guests

Over 70,000 downloads in its first week, a 15% uplift in bookings, and No.1 in the travel app charts. We designed a native iOS and Android app that made it simpler for Center Parcs guests to plan, book, and get the most from their stay.

Our web development approach is built on one thing:
Performance, reliability, and scalability from the first line of code

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Performance by default

We build performance in from the start. Core Web Vitals are a requirement we engineer in, not a metric we chase after launch.
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Built to be owned

We build with clear codebases and documentation that any competent developer can understand and improve. Handover is part of how we build.
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Engineered for accessibility

We build to WCAG 2.2 standards, treating accessibility as an engineering discipline. The result works for more users and meets legal requirements.

Fast, accessible platforms 
built to grow on

Atomic's web development team builds fast, accessible, and scalable web platforms that perform for your users and give your business the technical foundation to grow on.

Got questions about web development? We've got answers.

Get in touch

Web development is the process of building and maintaining websites and web applications, covering front-end interfaces, server-side logic, databases, and infrastructure.

We work across modern web technologies including React, Next.js, Node.js, and Python, alongside leading CMS platforms. We recommend the right stack for your project, not our preferred defaults.

Timeline depends on scope and complexity. A marketing website typically takes eight to twelve weeks. A complex web application with multiple integrations and features requires more time.

Web development investment varies by scope, functionality, and the number of integrations required. We scope every project individually and give a clear estimate after understanding your requirements.

Yes. We work with a wide range of CMS and e-commerce platforms. If your existing platform serves your needs, we'll work within it. If not, we'll advise on the alternatives.

Performance is built into our development process: optimised images, efficient code, server-side rendering where appropriate, CDN configuration, and Core Web Vitals testing before launch.

Security is built in from the start, with secure coding practices, regular dependency updates, HTTPS configuration, input validation, and platform hardening as standard parts of our build process.

We offer post-launch support, maintenance retainers, and ongoing development. We can also hand over to your in-house team with documentation and a structured knowledge transfer.

A clear brief covering your goals, audience, and existing content or brand guidelines. Any existing analytics or user research is valuable too. We'll structure discovery from there.

Yes. We take on websites built by other agencies regularly. We begin with a technical audit before agreeing the scope of ongoing maintenance and any improvement work.

Explore our related services

API development

Integrations your systems can depend on

We design and build robust APIs that connect your platforms, products, and third-party services, engineered for security, scalability, and long-term reliability.

App development

Apps that earn their place on the home screen

We build native and cross-platform iOS and Android apps that perform brilliantly, from initial design through to App Store submission and post-launch support.

Technical planning

The technical foundation your build depends on

We define the architecture, technology choices, and engineering constraints that give your project the clarity it needs to build accurately, on time, and to the right standard.

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