Architecture that survives change
Clear module boundaries, a data model that matches your domain, and no framework magic nobody on your team can debug.
Build
Web apps that stay fast as they grow.
Dashboards, portals, marketplaces, internal tools — built on architecture that still makes sense two years and ten features from now.
Discuss this project
6–10 weeks for a first production release
The short version
Most web apps don't fall over on launch day. They rot slowly: a data model that was never quite right, a component tree nobody wants to touch, a page that got 400ms slower every quarter until users stopped waiting for it.
We build the other way round. The data model and the boundaries between modules get decided before the first screen is styled, performance budgets are set at the start, and every release runs through the same automated checks. The result is an app your team can keep changing without dreading it.
Typically built with
TypeScript React Next.js Node.js PostgreSQL Redis AWS Playwright
What's included
How we approach web app development
Performance budgets from day one
Core Web Vitals targets are set before we write code and checked on every deploy, not measured after users complain.
Auth, roles and permissions done properly
SSO, multi-tenancy, granular roles — handled at the framework level so a missed check can't leak another customer's data.
Tested where it counts
Integration tests over the paths that lose you money, not a coverage number chased for its own sake.
What you get
Delivered at the end
- Production web application, deployed and monitored
- Repository, CI/CD pipeline and infrastructure in your accounts
- Architecture notes and a runbook your team can act on
- Handover session with the engineers who built it
Right fit
This is for you if
- 01 SaaS products going from prototype to paying customers
- 02 Internal tools that outgrew spreadsheets and no-code
- 03 Existing apps that got slow and hard to change
Not quite what you need? Tell us the outcome you're after — if a different service or a smaller piece of work would get you there faster, we'll say so.
Ask us insteadHow we work
A clear path from idea to impact
- 01
Discover
We map your goals, users, and constraints into a sharp, prioritized scope.
- 02
Design
Architecture and interfaces are prototyped and validated before a line ships.
- 03
Build
Engineers deliver in tight sprints — you see working software every week.
- 04
Scale
We launch, monitor, and harden — then grow the system alongside your business.
Questions
What clients ask about web app development
The things that come up most on the first call. Anything else, just ask — we answer straight.
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Can you take over an existing codebase?
Yes. We start with a short audit — architecture, dependencies, test coverage, and the riskiest parts — then give you a written plan before touching anything. Plenty of our work is rescuing apps somebody else started.
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Which framework will you use?
Whatever fits the product and your team's ability to maintain it. In practice that's usually React with Next.js or Astro, but if your team runs Vue or Rails we'd rather build in something you can own than something we prefer.
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How do you keep it fast as features pile up?
Performance budgets are enforced in CI. If a change pushes bundle size or a Core Web Vital past the agreed threshold, the build fails and we deal with it before it ships.
Often paired with
All servicesCustom Software Development
Tailored platforms engineered around your exact workflows — not off-the-shelf compromises.
View serviceMobile App Development
Native-quality iOS and Android apps with delightful UX and offline-first reliability.
View serviceWeb Design & Development
Conversion-focused marketing sites — fast, responsive, and SEO-first by default.
View serviceNext step
Let's scope web app development
Thirty minutes with the engineer who'd lead it. You leave with a scope, a number, and an honest read on whether it's worth building.
Prefer email? support@zeetek.net