Skip to content
Brainfullstack
Services / Web & Product

Web & Product

We build web products that are fast on a mid-range phone on a bad connection, accessible without a remediation project, and structured so the fourth engineer to touch them can still move quickly. Design and engineering happen in the same room and the same repository.
median conversion lift after rebuild
3.4x
typical Largest Contentful Paint
0.9s
Lighthouse accessibility score at handover
100
All services
What you get

Deliverables

Concrete artefacts, handed over in your repositories.

01

Design system

Tokens, components and documented usage rules, shared by the design file and the codebase so they cannot drift apart.

02

Application

Server-rendered, typed end to end, with the data layer and caching strategy chosen for your read and write patterns rather than by habit.

03

Performance budget

Enforced in CI. A pull request that regresses Largest Contentful Paint fails before it reaches review.

04

Analytics and experiments

Event schema, funnel instrumentation and an experiment framework, so the next change is decided by evidence.

Capabilities

What this covers

  • Full-stack Next.js and React applications
  • Headless commerce and subscription billing
  • Design systems and component libraries
  • Core Web Vitals and conversion optimisation
  • WCAG 2.2 AA accessibility
  • Content modelling and headless CMS
Tooling

What we usually reach for

  • Next.js
  • TypeScript
  • Tailwind
  • Postgres
  • Stripe
  • Sanity
  • Vercel

Tooling is a consequence of the problem, not a starting position. If your team already runs something that works, we use that rather than charging you for a migration you did not ask for.

Related work

Where this has been applied

Lumen Retail / Commerce

A storefront rebuild that paid for itself in eleven weeks

Kestrel Health / Healthcare

Patient intake that a compliance officer signed off on

Questions

Web & Product, specifically

Whichever the evidence supports. We audit first. Often the fastest conversion win is a performance and information-architecture fix, not a new visual language.

Often the best arrangement. We supply the engineering and the design system scaffolding while your team owns the brand expression.

Repository, environments, runbook and two weeks of paired work with your team. We are not interested in being a dependency you cannot remove.

Also from us

Other services

AI Systems

LLM pipelines, retrieval, agents and the evaluation harness that keeps them honest.

Data Engineering

Pipelines, warehouses and reporting that stay correct when the source system misbehaves.

Automation

Workflow orchestration and systems integration that removes manual work permanently.

Next step

Tell us what you are building.

A system you want built, a model that has to survive real traffic, or a process that should have been automated a year ago. The first conversation costs nothing, and occasionally ends with us telling you not to build it.

Start a projecthello@brainfullstack.com

Reply within one working day

A person, not an autoresponder.

A 30-minute call, no deck

We ask about constraints, not budget.

A written view within a week

Including the case for not proceeding.