Web applications that stay fast as they grow
Most web projects fail slowly: the first release is fine, then every new feature makes it heavier and harder to change. We build web applications on Next.js, React and Node.js with the structure, performance budgets and tests that keep them workable years in, and we take on the migrations off WordPress and legacy stacks that other agencies avoid.
- Next.js and React with server-side rendering where it earns its keep
- Accessibility, Core Web Vitals and SEO treated as engineering, not polish
- Auth, APIs, headless CMS and payments wired in properly
Who this is for
Companies that need a web application to do a job (sell, serve customers, run operations) rather than a brochure site refreshed every couple of years.
Founders and product teams
You have a product to build, or a version one that has hit its ceiling. You need a team that can own the full stack (front end, API, database, deployment) and hand it back in a state your own engineers can extend.
Established businesses replacing legacy web
You run on WordPress, an ageing PHP or .NET portal, or a platform whose vendor has moved on. Editors are stuck, the site is slow, and every integration is a workaround.
Agencies and internal teams needing capacity
You have the design or the product direction and need senior React and Node engineers to build to it, on your repository and to your standards, without a long ramp-up.
Web development services
These are the shapes most web engagements take. A single project usually combines two or three; each is scoped and staffed on its own terms.
Custom web application development
End-to-end build of a web application: React or Next.js front end, Node.js or Next.js API layer, PostgreSQL, deployed to your cloud account with CI/CD. This applies when the product is the business (a SaaS, a customer portal, a booking or ordering system) and off-the-shelf will not fit.
- Next.js App Router, React Server Components and TypeScript
- REST or GraphQL APIs on Node.js
- PostgreSQL schema design and migrations
- CI/CD, preview deployments and environment parity
Marketing sites and headless CMS
Content-driven sites where editors publish without a developer and the front end stays fast: Next.js with a headless CMS such as Sanity, Contentful, Strapi or headless WordPress, statically generated and revalidated on publish. This applies when SEO and editorial control matter as much as the design.
- Headless CMS selection and content modelling
- Static generation with incremental revalidation
- Structured data, sitemaps and metadata per page
- Localisation for multi-market sites
Migrations from WordPress and legacy stacks
Re-platforming a site or application onto a modern stack without losing rankings, content or the integrations that quietly keep the business running. We inventory URLs, content types and third-party hooks first, then migrate with redirects mapped and a parallel run before cutover. This applies when the current platform is slow, insecure or blocking the roadmap.
- URL inventory and 301 redirect mapping
- Content and media migration with validation
- Plugin and integration replacement plan
- Rankings and analytics monitored through cutover
Authentication, authorisation and user accounts
Login, roles, permissions and session handling built to hold up: OAuth and SSO with Google, Microsoft or Auth0, multi-factor authentication, and role-based access enforced on the server rather than hidden in the UI. This applies to any application where different users may see or do different things.
- OAuth 2.0, OIDC and SAML single sign-on
- Role- and attribute-based access control
- Session, token and password policy design
- Audit logs for sensitive actions
APIs and third-party integrations
The API layer other systems talk to, and the connectors that bring payments, CRM, ERP and email into your application. Versioned, documented, rate-limited and tested against the sandbox before production. This applies when your web app is one part of a wider system rather than the whole of it.
- Stripe, PayPal and regional payment gateways
- CRM, ERP and accounting connectors
- Webhooks with retries and idempotency
- OpenAPI documentation and client SDKs
Performance, accessibility and SEO engineering
Making an existing application measurably faster and usable by everyone: Core Web Vitals, bundle size, image and font loading, WCAG 2.2 AA conformance and technical SEO. This applies when a site is losing conversions or rankings, or when a procurement, public-sector or accessibility requirement has to be met.
- Performance budgets enforced in CI
- Lighthouse and real-user monitoring
- WCAG 2.2 AA audit and remediation
- Crawlability, canonical and structured-data fixes
Also part of the engagement
Technologies we work in
Hosting and deployment
Vercel, AWS or Azure in your own account, with a preview environment per pull request and a rollback that is one click, not an incident.
Security by default
OWASP Top Ten controls, dependency scanning, secrets in a vault and security headers set from the first deploy, not retrofitted after a pentest.
Observability
Error tracking, logs and uptime monitoring wired in before launch, so the first sign of trouble is a dashboard rather than a customer email.
Ongoing support
Dependency updates, framework upgrades and small changes on a monthly retainer, or per-incident when you would rather not commit.
How we approach web work
You own everything
Repository, cloud accounts, domains and CMS are yours from the first commit. We work inside them rather than migrating to you at the end.
Rendering chosen per page, not per fashion
Server-side rendering, static generation and client rendering each have a place. We choose per route based on how the page is used and how often it changes, and we can explain why.
Performance and accessibility are budgets
Bundle size, Core Web Vitals and WCAG conformance are numbers we agree up front and check in CI. They do not slip because a deadline moved.
What the engagement looks like
- 01
Discovery
We go through what the application must do, who uses it, what it replaces and what it must integrate with, plus current analytics and rankings if there is an existing site.
- 02
Plan and estimate
Information architecture, a technical design covering rendering, data and auth, a phased scope and a cost range. You keep the plan whether or not we build it.
- 03
Build in the open
Short increments on a preview URL you can click through, with tests, accessibility checks and performance budgets running on every pull request.
- 04
Launch and support
Redirects, DNS, monitoring and a rollback path rehearsed before go-live. Then handover, and a retainer if you want us to stay.
What you receive at the end
Everything runs in accounts you control from the first commit. Ending an engagement is an access change, not a migration.
- Source code in your repository
- Infrastructure and hosting in your accounts
- Technical design and architecture notes
- Automated test suite and CI pipeline
- Accessibility and performance reports
- Handover session and documentation
We’ve got the answers you seek
Anything not covered here? Ask us through the contact form and we’ll answer within a working day.
If the pages need to be indexed by search engines, load quickly on poor connections or share a lot of server-side logic, Next.js with server rendering or static generation is usually the right call. A single-page React app still makes sense for an authenticated dashboard behind a login, where SEO is irrelevant and interactivity is heavy. We choose per project and often per route, and we document the reasoning.
Tell us what the web application needs to do
Who uses it, what it replaces, what it must connect to. We'll come back within one working day with an honest view of the right stack and roughly what it would take.
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