Frontend
Hire React Developers
React engineers who have shipped operational products people use all day, not marketing pages.
React earns its place where an interface has to change shape with the data — approval queues, configurators, dashboards that pull in live state. Sazinga Quote drives a formula pricing engine and a 3D preview from the same React front end, and Field runs offline in vans and on shop floors, which is the kind of work that exposes whether someone understands rendering or merely uses it.
When hiring, ask about the second year of an application rather than the first. What did their state management look like once forty screens shared it, how did they stop a table of ten thousand rows from stuttering, and what broke when React 18 changed effect behaviour under strict mode. Candidates who have only built greenfield features tend not to have answers to any of those.
What these engineers do
- React 18 and 19, hooks, Suspense and concurrent rendering used deliberately
- TanStack Query with Zustand or Redux Toolkit, keeping server and client state apart
- Virtualised tables, forms and dashboards that stay responsive at real data volumes
- Offline-first behaviour, optimistic updates and conflict resolution on sync
- Accessibility and testing with React Testing Library and Playwright in CI
Delivered AI-first
AI assistance is used for the repetitive layer of React work - component and hook scaffolding, typed API clients generated from an OpenAPI schema, test cases for reducers and forms, and mechanical refactors such as class components to hooks or a state library migration. Rendering behaviour, memoisation and accessibility are decided by the engineer, because those are exactly where a plausible-looking suggestion is most often wrong. Review discipline is unchanged. The measurable effect is throughput per engineer, not fewer reviews.
Built with React at Sazinga
These are our own production applications, not client references — which is why the engineers have operated them, not just written them.