Data & analytics

Front end development

Interfaces that load fast on a mid-range phone, work with a keyboard, and are instrumented so you can tell whether changes helped.

What does good front end development deliver?

Good front end work delivers interfaces that load quickly on real devices and networks, remain usable with a keyboard and screen reader, behave correctly across screen sizes, and are instrumented so the effect of future changes can be measured rather than assumed.

Performance is not a phase at the end

Speed cannot be retrofitted cheaply. Once a site ships with heavy JavaScript bundles, unoptimised images and layout that shifts as it loads, fixing it means rebuilding significant parts. Set a performance budget before the first component and the problem does not occur.

The same is true of accessibility. Building with semantic HTML, focus management and proper contrast from the start costs almost nothing. Retrofitting it across a finished site costs weeks — and for public-sector work it is not optional.

Process

How we deliver it

1Set budgetsPerformance andaccessibility targets agreedbefore building.2Build semanticallyReal HTML structure,keyboard support, focusmanagement.3Optimise as you goImage formats, codesplitting, font loading,layout stability.4Test on real devicesMid-range Android on athrottled connection.5InstrumentAnalytics and error trackingwired in before launch.
Process flow for Front end development
  1. 01

    Set budgets

    Performance and accessibility targets agreed before building.

  2. 02

    Build semantically

    Real HTML structure, keyboard support, focus management.

  3. 03

    Optimise as you go

    Image formats, code splitting, font loading, layout stability.

  4. 04

    Test on real devices

    Mid-range Android on a throttled connection.

  5. 05

    Instrument

    Analytics and error tracking wired in before launch.

Deliverables

What you receive

  • Implemented interface meeting the agreed performance budget
  • Core Web Vitals report from real device testing
  • WCAG 2.1 AA conformance with the audit that proves it
  • Component documentation for future development
  • Analytics and error tracking configured

Engagement shape

Scoped by page and component count, usually alongside a design or CMS project rather than standalone.

Tooling

What we typically build with

  • React
  • Next.js
  • TypeScript
  • Tailwind CSS
  • Lighthouse
  • axe DevTools
  • Vercel

Stack decisions follow the problem. This is where we usually start, not a fixed menu.

Frequently asked

Questions we get about this

Why does our site score badly on Core Web Vitals?

Usually the same causes: large unoptimised images, render-blocking third-party scripts, fonts loading late and shifting layout, and JavaScript bundles far larger than the page needs. Most are fixable without a rebuild once measured properly.

Does accessibility cost extra?

Built in from the start, almost nothing — it is largely a matter of using correct HTML. Added afterwards it is expensive. That is the argument for treating it as a build standard rather than a feature.

Talk it through before you commit

A discovery call is a working session on your constraint, not a sales pitch.

Quick inquiry

Tell us what you're trying to build

A short note is enough. You'll hear back from the team, not a bot — usually within one working day.

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