inparlor.
United Kingdom

Web Application Development.

Web apps and complex sites that do real work, not just look good.

Pricing

Custom quote — proposal within 48 hours

fixed project

Indicative GBP conversion; final quotes are issued in GBP against itemised scope.

Why UK buyers choose us

A remote-first, US-headquartered senior team building bespoke software for UK businesses — GBP invoicing, a UK working-hours overlap and UK-GDPR-aware delivery, with the code yours from day one.

  • Remote-first senior engineers with a UK business-hours overlap window for stand-ups, demos and incident response
  • Invoiced in GBP (£) against a clear fixed-bid scope, so there are no surprise currency conversions on your purchase order
  • Delivery built to be UK-GDPR and ICO-aware: lawful-basis mapping, data-minimisation and a documented data-processing trail
  • Contracts run under a mutually agreed governing law, with a mutual NDA and the GitHub repository transferred to your organisation

We deliver with UK-GDPR and ICO expectations in mind — lawful-basis mapping, data-minimisation, subject-access readiness and a documented processing trail. We build to the controls your DPO or auditor specifies (we are not a law firm), and can scope UK or EU data residency where a workload requires it.

What this includes

Deliverables, line by line.

  • Design system in Figma plus a coded component library
  • Application screens, dashboards, and authenticated views
  • Responsive layouts at 360, 768, 1024, 1280, and 1536 breakpoints
  • Postgres data layer with migrations, plus a CMS layer where public content needs one
  • Authentication and role-based access via Clerk, WorkOS, or Auth.js
  • Typed REST or tRPC API with form handling and spam protection
  • GA4, Plausible, or PostHog analytics setup
  • Sitemap, robots.txt, and OG image generation for public surfaces
  • Lighthouse mobile score of 95+ on public pages at launch
  • Vercel or Hetzner deployment with preview environments and a 30-day post-launch warranty
Process

How an engagement runs.

  1. 01

    Discovery and audit

    One week of stakeholder interviews, workflow review, and competitive teardown. We deliver a brief naming the core screens and flows that carry the application, and the public pages that surround them.

  2. 02

    Architecture and information design

    We map the data model, every route, the auth and permission boundaries, and metadata patterns before any pixels are pushed.

  3. 03

    Design

    Two weeks in Figma. One direction, not three, we make a call so you don't have to vote on aesthetics. We design the application states, not just the happy path.

  4. 04

    Build

    Three to five weeks of Next.js development with weekly preview deploys. You exercise real flows in the browser, not in a slide.

  5. 05

    QA and launch

    Cross-browser testing, accessibility audit, redirect mapping so existing URLs keep their equity, and a launch checklist signed off before DNS flips.

  6. 06

    Stabilization

    30 days of bug fixes, monitoring, and a one-hour training session so your team can operate the app and its content.

FAQ

What buyers ask before signing.

Ready to start?

Ready to start with Web Application Development?

Tell us about your business and current numbers. We respond within 48 hours with scope, pricing in GBP, and timeline.

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