Technology Expertise
React Development & AI Integration
We build the React front ends that operations teams live in all day: dashboards, admin consoles, portals and long multi-step forms. The goal is an interface your staff find fast and a codebase your own engineers can still change a year after we hand it over.
Start a React project →What React expertise does Code and Trust have?
Code and Trust builds React interfaces for data-heavy business software: dashboards, admin tools and complex forms. Depending on the scope, that means a small component system with typed props, clear state boundaries and tests, screens that work for keyboard and screen-reader users, and documentation your team can own after handoff.
What we build with React
Most of our React work is software a business runs on rather than software it markets with. These screens are dense, stateful and used for hours at a time, so the details that matter are the ones a daily user notices: how fast a filtered table responds, whether a half-finished form survives a page reload, and whether the same action works the same way on every screen.
- →Operational dashboards with filtering, sorting and drill-down over large tables
- →Admin consoles with role-based views, bulk actions and audit trails
- →Multi-step forms and intake flows with validation, saved drafts and review steps
- →Client and partner portals that sit on top of an existing system
State that stays understandable
The usual reason a React app becomes hard to change is state: the same data fetched in three places, copied into local variables and drifting out of sync. The fix is a clear line between server data, which lives in a query cache such as TanStack Query (formerly React Query), and interface state such as which panel is open, which lives next to the component that uses it. A global store such as Zustand is kept for the few things that really are global. Both are libraries we have shipped on client work; which ones a project uses depends on the codebase and what the client asks for. The result is that an engineer can find where a value comes from without reading the whole app.
Design systems, not one-off screens
Past a dozen screens, the cost of a React app is decided by whether its buttons, tables, form fields and dialogs are one set of components or thirty slightly different copies. When a product is headed past that point, a small, documented component system built early, typed so that misuse fails at compile time, pays for itself as the product grows. New screens are then assembled from parts that already work, and a design change is made once.
- →Typed, documented components for forms, tables, dialogs and navigation
- →Shared tokens for colour, spacing and type, so theming is a configuration change
- →Visual and behavioural tests on the shared components, not only on pages
Accessibility as a design target
When accessibility is in scope, we design and test React interfaces against WCAG 2.2 AA, the current W3C Recommendation: keyboard navigation through every flow, visible focus, labelled form fields, sufficient contrast and sensible screen-reader output. How deep the testing goes, from automated tools during development to manual checks on the flows that matter most, is agreed per engagement. That is a target we build to and test against, not a certificate. If you need a formal accessibility audit or a conformance report for procurement, we plan for an independent review as part of the scope.
Taking over a React codebase
Some of our React work starts with someone else's code: an app that works, mostly, but that nobody on the current team wants to touch. How a takeover starts depends on the project; often we read the code before quoting, then say what we would keep, what we would fix first and what we would leave alone. Fixes can go in behind tests, one area at a time, while the product keeps shipping; see software project takeover for how those engagements run.
- →Dependency and build health, including outdated or abandoned packages
- →Where state is duplicated and where components have grown too large
- →Test coverage on the flows the business depends on
- →Accessibility and performance problems a daily user would notice
Why Code and Trust uses React
Code and Trust selects React for projects where it provides a demonstrable engineering advantage: better performance, lower operational overhead, or faster iteration cycles. Every technology choice is justified by requirements, not familiarity.
Production-proven
Our React implementations run in production at enterprise scale, not greenfield experiments. We understand the failure modes.
AI-native integration
We combine React with modern LLM APIs and AI tooling, not as an add-on, but as a core architectural decision from day one.
Handoff-ready
Every project ships with inline documentation, automated tests, and a knowledge transfer session, so your team can own and extend it independently.
React projects: common questions
What kinds of React applications do you build?
Mostly business software: operational dashboards, admin consoles, client portals and complex multi-step forms. These are screens people use for hours a day, so we optimize for responsiveness, consistency across screens and a codebase your own team can maintain.
Do you build with React alone or with a framework such as Next.js?
It depends on the product. If every screen sits behind a login, a React app built with Vite is often the simpler choice. If the product also has public pages that need to rank in search, Next.js usually fits better; see our Next.js page for that decision.
Are your React apps accessible?
When accessibility is in scope, we design and test to WCAG 2.2 AA: keyboard navigation, visible focus, labelled fields, contrast and screen-reader output. How the testing is done is agreed per engagement. That is a build target, not a certification; if you need a formal audit or conformance report, we plan for an independent review.
Can you take over and fix an existing React app?
Yes. How we start depends on the project; often we read the codebase first and give you a plain assessment of what to keep, what to fix first and what to leave alone. Fixes can land behind tests, one area at a time, so the product keeps shipping while it improves.
Do you build mobile apps with React Native?
Yes. React Native fits when a product needs iOS and Android apps and the team wants one React skill set and shared code across both; tools such as Expo and OneSignal are ones we have used. Whether it is the right choice depends on the project.
Start a React project with Code and Trust
Tell us what you're building. We'll scope it, resource it, and give you a fixed-price quote, with no billing-by-the-hour surprises.
Start a React project →