Service
Web Application Development
Web applications built on Next.js and TypeScript: fast on a phone, accessible, and architected so the data layer survives the next redesign.
The problem
What usually goes wrong
A web application is judged on the slow days. It is fine with twenty records and unusable with twenty thousand, or it loads quickly on an office connection and stalls on a truck.
Most of that is decided early, in how data is fetched, what runs on the server, and whether the interface was built around a real working set.
We build for the working set you will actually have, and we measure it rather than assuming it.
Scope
What we deliver
Application architecture
Server rendered pages where content matters, client interactivity where the work happens, and a clear boundary between the two.
Authentication and roles
Sessions, permissions and record scoping enforced on the server, with the interface reflecting what the user may actually do.
Operational interfaces
Tables that filter, sort and page against the database rather than in the browser, with keyboard navigation and bulk actions.
Forms that behave
Validated on both sides, resilient to double submission, and clear about what failed and why.
Performance budget
Set at the start and checked on real pages with real data volumes, not on an empty demo.
Accessibility to WCAG 2.2 AA
Keyboard paths, focus states, target sizes, contrast and screen reader semantics treated as requirements rather than a final audit.
Method
Technical approach
Rendering strategy is chosen per route. Marketing and reference pages are generated at build time so they are static files on a network edge. Application routes render on the server with the data the page needs and hydrate only the parts that are interactive.
Queries are written against indexes that exist. Pagination is keyset based where lists are long, filters push down to the database, and the interface never loads a table into memory to sort it.
State is kept where it belongs. Server state comes from the server with explicit cache rules. Client state covers only what the user is doing right now, so a refresh never loses more than a keystroke.
Forms validate with the same schema on both sides, so the browser and the server cannot disagree. Submissions carry an idempotency key where a duplicate would create a duplicate record.
Performance is measured on throttled mobile against seeded production scale data, and regressions are caught before release rather than reported by a user.
Handover
Deliverables
Everything below is yours at delivery, including the intellectual property. Sawhorse keeps nothing.
- 01Next.js application with a documented rendering strategy per route
- 02Authentication, authorisation and session handling
- 03Operational screens with server side filtering, sorting and pagination
- 04Shared validation schemas used by client and server
- 05Performance budget with measurements against seeded data
- 06Accessibility conformance to WCAG 2.2 AA
- 07Automated tests over critical paths
- 08Source code, deployment guide and documentation
Related
Systems this service builds
- Customer and Client PortalsA logged in area where your customers see their own status, documents, invoices and history, which removes the phone calls that only exist because they cannot.
- BI Dashboards and ReportingAgreed metric definitions, modelled tables and a small number of views tied to decisions, so a meeting argues about the action rather than the number.
- Multi Tenant and White Label SaaSSoftware one codebase serves to many customers, each with isolated data, its own branding and domain, and billing that matches what it uses.
FAQ
Questions people actually ask
Why Next.js rather than a single page application?
Because most business applications have both public pages that need to be fast and indexable and internal pages that need real interactivity. Next.js lets each route pick, so you do not pay client bundle cost for a page that is mostly text.
Will it work offline?
It can, where that is worth building. A progressive web app with a service worker and a local cache suits field work. We scope offline behaviour explicitly, including how conflicts are resolved on reconnect.
How do you handle large tables?
Filtering, sorting and pagination run in the database against indexes, using keyset pagination for long lists. The browser holds one page of rows.
Can it integrate with our existing login?
Yes, where your identity provider supports a standard protocol. The session layer is built around it rather than beside it, so there is one place that decides who a user is.
Do you handle the hosting setup?
We deliver the deployment configuration and a deployment guide, and we can perform the initial deployment into accounts you own. The accounts and the infrastructure stay yours.
What accessibility standard do you build to?
WCAG 2.2 AA. Keyboard operation, visible focus, target size, colour contrast and screen reader semantics are part of the definition of done.
Let’s talk about the system you need.
Tell us where the current process breaks down. We can map the workflow, examine the integration requirements and define a practical scope for the build.
- A mutual NDA is signed before project details are shared.
- Scope is fixed in writing before any build starts.
- You own the source code, the IP and the documentation at delivery.
- Support plans are available and tailored on a discovery or technical call.