Web Application Development Services that start where a page builder stops.

Customer-facing product platforms, internal tools, ecommerce storefronts and corporate websites, plus the backends and APIs behind them. Recent shapes: a front-end rebuild across a suite of warehouse applications with the REST integration behind it, four corporate websites built to an accessibility bar a financial-services group set, a time-tracking application for a research university, and a web GUI for a platform that until then had no screen at all. Where the real job is rescuing an application that already exists, the honest route is legacy modernization, and we will point you at it.

There is no headline price here, and not because it is a secret: the same brief costs different amounts depending on how far it has to reach. Four things move the number. How many screens and workflows the application really has. How many systems it has to integrate with. How much design is needed, if no design system exists yet. And the bar it has to clear on concurrent load, accessibility and security. Integrations are the half buyers underestimate and the half a fixed price has to stand on, which is why the estimate arrives after scoping rather than in front of it. If you would rather buy capacity than a project, that is team extension, billed monthly per team member.

In our delivery experience the timeline depends on scope, integrations, and how quickly decisions get made on your side, so we do not quote a number before scoping. What we commit to instead: scoping produces a sprint plan with real dates, and you see working software from the early sprints rather than waiting for a big reveal. Where a milestone-based contract is what you need, the sprint plan becomes those milestones and they are the thing to hold us to. If a hard deadline drives the project, we fix the date and flex the scope with you, in the open.

Yes, and integration is where the schedule risk sits, because the API on the other side belongs to somebody else and changes on their calendar. On one re-platforming onto Shopify that meant storefronts across seven EU countries joined to a Microsoft Dynamics ERP by a custom middleware app, with the ERP as the single source of truth for products, stock and logistics partners and a UI customer service uses to manage orders. On a warehouse app store it meant completing the backend integration over REST once the front ends were done. Scoping produces the integration map, with the ones whose APIs we do not control flagged on it.

The stack that fits your product, your team and your hiring market, not our house favorite. We work across React, Next.js, Vue, Nuxt and Angular with TypeScript on the frontend and .NET, PHP/Laravel and Node.js on the backend, so the recommendation is not constrained by the one framework we happen to know. A suite of more than fifteen applications got Angular with Storybook, so a component was built once instead of once per app; a venue platform got Laravel and React because the system it replaced was not built on a framework at all. The reasoning goes in writing during scoping, so you can challenge it before a line of code exists.

Both are cheapest as requirements inside the scope and most expensive as a retrofit, and the bar itself usually comes from you: a regulator, a tender, or a customer contract. On four corporate websites for a German financial-services group, full accessibility compliance was one of three objectives the client set, the same bar applied to every one of the four, and accessibility implementation sat inside our build scope alongside front-end and back-end development, responsive layout, content integration and analytics setup. Our QA engineers are ISTQB-certified. One thing worth being precise about: where a formal conformance level against a named standard is needed, that is a statement the site owner makes about their own sites, not one a build partner makes for them.

You own the code and the roadmap, which is the whole point of building custom rather than renting a seat. Launch is where results start, not where they stop, so after it we stay on if you want us to: monitoring, fixes, dependency updates and a steady stream of improvements, run by the team that built the application. Bought on its own that is software maintenance and support. On fixed-scope work a post-launch warranty period is standard, with the length agreed per contract. If you would rather run it in-house, you get the documentation, the CI and the access handed over rather than promised.

Every full-service vendor claims the frontend, the backend and the QA, this page included, so the questions worth asking sit below the category. Start with the one advantage this purchase gives you: a web application is a thing you can open. Ask for a live URL instead of a screenshot, then use it on a phone, tab through a form with the keyboard only, and load it on a bad connection. Then do the same to the proof: a star rating is a summary somebody else wrote, so ask for the review link and read the interview it came from. Every client quoted here opens their own on Clutch. Last, ask who employs the engineers and what the firm does not hold. The engineers are unicrew's own: 100+ senior in-house engineers across six countries, not a subcontractor chain, on the market since 2012, first as Artelogic. They work from Ukraine, Poland, Estonia and the UK, and a fifth office is a US business address in Ormond Beach, Florida. There is a dedicated security engineer and a part-time senior security consultant on staff, and we hold ISO 27001:2022 and ISO 9001:2015 audited by Quay Audit UK, but not SOC 2, which we say rather than let you assume it.

This page is for building a web application as unicrew, credited, working directly with you. White-label web development is the same engineering delivered under your brand, for agencies, studios and software companies that resell it to their own clients. Same engineers, same ISTQB-certified QA engineers, same bar; what changes is whose name is on the work.