SERVICE
Web application development
Applications that stay fast as the data grows and the team changes.
What this actually is
A web application is software that happens to run in a browser: state, permissions, real data and consequences when it is wrong. That is a different discipline from a website, which is mostly content and where a slow page is an inconvenience rather than a failed transaction.
The engineering questions are about what happens as things grow. What does this list do at fifty thousand rows, what does the interface do on a bad connection, and what happens when the fourth engineer changes a component the first one wrote.
What we do
Architecture
Rendering strategy, data flow and where state lives — decided early, because these are the choices that are expensive to reverse.
Interface
Typed components, real accessibility, and performance measured on the devices your users actually have.
Backend and data
APIs, schema design and the query work that decides whether the application is still fast next year.
Delivery
CI, preview environments and staged deploys, so shipping is unremarkable rather than an event.
The stack
What it connects to
Integration surface is the honest driver of effort — ten systems is not ten times one system.
- Auth providers — Auth0, Clerk, Cognito
- Payments — Stripe, Paddle
- CMS and headless content platforms
- Analytics and product telemetry
- Search — Algolia, Elastic, pgvector
- Email and notification delivery
How a project runs
Scoping
1 week
Requirements, data model sketch and the performance and accessibility targets.
Foundation
1–2 weeks
Repository, pipeline, auth and the first route running end to end.
Build
4–12 weeks
Features shipped continuously behind flags where they need to land quietly.
Hardening
1–2 weeks
Load testing, accessibility audit, error handling and observability.
Where teams use it
SaaS products
Multi-tenant applications with billing, roles and an admin surface that support can actually use.
Dashboards
Data-dense interfaces that stay responsive at volumes where naive rendering stops working.
Customer portals
Authenticated self-service wired into the systems that hold the real records.
Marketplaces
Two-sided platforms with search, matching and payments.
Internal tools
Operations software built to be used all day, which is a stricter standard than being used occasionally.
When this is the wrong answer
If it is mostly content, you want a site and a CMS, not an application. Building it as an application makes it slower to change and more expensive to host.
Rendering strategy is hard to reverse. Choosing client-side rendering for something that needed to be indexable, or the opposite, is the most common expensive mistake in this category.
Accessibility retrofitted at the end costs several times what it costs designed in, and by then the component structure is usually working against it.
Proof
Booking-optimized discovery engine with sub-50ms search
Multi-phase ranking system with GRU event encoding and natural-language venue search served from a real-time vector store.
Frequently asked questions
Next.js or a single-page app?
Next.js where content must be indexable or first load matters commercially. A pure SPA is reasonable behind a login where SEO is irrelevant. The wrong choice here is expensive to undo, which is why it is a scoping decision rather than a preference.
Can you work with our designers?
Yes, from Figma, with the ambiguities raised before the build rather than discovered during it.
Do you take over existing applications?
Frequently. The first week is reading and shipping something small, not proposing a rewrite.
Who owns the code?
You do, from the first commit — work happens in your repository under your licence, and the contract assigns IP outright. We keep no rights and build no dependency that makes leaving expensive.
What does it cost?
We do not publish a number, because the honest one depends on scope, integrations and the accuracy bar. Tell us the budget you are working with and we will say what it buys — or say plainly if it does not buy enough.
How fast will it be?
We agree targets during scoping — Core Web Vitals thresholds and a p95 for the interactions that matter — and measure against them on real devices rather than a development laptop.
Will it be accessible?
Built to WCAG 2.2 AA as part of the work rather than as a later audit. Retrofitting accessibility costs several times more and by then the component structure is usually working against it.
Can it handle our data volume?
That is a scoping question with a real answer. A list that is fine at 500 rows and unusable at 50,000 is a rendering and query problem we solve deliberately, not something to discover in production.
What about SEO?
Rendering strategy is chosen for it where it matters commercially — this site is Next.js for exactly that reason, and the decision is hard to reverse later.
How do we start?
A scoping call, then a short written proposal with scope, sequence and the assumptions it rests on. If we think you should not do this, or should do a smaller version first, that is what the proposal says.
Can our team take it over afterwards?
That is the intended end state. Standard technology, decisions documented as they are made, and handover sessions with your engineers. If a system can only be maintained by us, we built it wrong.
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ReadWeb Application Development — tell us the scope
Tell us what you are building. We reply within one business day.