Component work that survives contact with a second team.
Dynamic, robust, scalable interfaces in React — typed, tested and composed from components that manage their own state. We also take the two jobs nobody volunteers for: making a React app that has slowed down fast again, and moving a legacy front end onto React without stopping the business.
FUEiNT Technologies is a software studio in Coimbatore, India, building custom React applications since 2014 — React 18 with TypeScript, tested with Jest and React Testing Library, for clients across the world.
What we actually build.
React is a library, not a plan. These are the deliverables an engagement here produces, whichever of the three shapes it takes.
Tailor-made applications built from scratch to meet your specific business requirements, rather than a template with your data poured into it.
Auditing and optimising existing React apps for speed and efficiency. We profile first, so the fix is aimed at the measured cause rather than the suspected one.
Legacy applications moved to a modern React architecture — screen by screen, so there is never a single day on which everything has to work.
Encapsulated, documented components with their own state, so the next developer composes rather than re-invents.
Types are the cheapest documentation available, and they are what keeps a large React codebase changeable in year three.
Jest and React Testing Library aimed at behaviour rather than implementation details, so refactoring does not mean rewriting the suite.
How a React engagement runs.
On an existing app, nothing is proposed before someone senior has read the repository and run it. On a new build, this is the domain instead.
State, routing, data fetching and folder structure settled in writing. These are the decisions that are expensive to reverse.
Vertical slices that go all the way to something you can click, rather than horizontal layers that only meet at the end.
Behaviour tests around what users do, and a profile of the screens they use most.
Documentation written along the way, and a team that stays reachable afterwards.
- The repository, or read access to a copy.
- The screen everyone complains about — by name.
- Who else is committing to this codebase, and how often.
- Whether it must keep running while it is being changed. It usually must.
Questions we are actually asked.
React, Angular or Vue?
React has a moderate learning curve and high flexibility because it is a library rather than a framework; Angular is steeper and less flexible; Vue is the easiest to pick up and equally flexible. On performance React and Vue are both excellent. We build in React because flexibility is what a long-lived product needs most.
Can you take over a React app someone else wrote?
Yes — it is a large part of what we do. An audit comes first, so you get a written view of the codebase before you commit to changing it.
Why is our React app slow?
Usually unnecessary re-renders, bundle size and data fetching, roughly in that order. We profile before changing anything, because the obvious culprit is often not the expensive one.
Should we be using Next.js instead?
If the pages need to be found by search or rendered on the server, yes — that is what Next.js adds. If the application sits behind a login, plain React is usually the simpler and cheaper answer.
Who owns the code?
You do. Open source, end to end. Your success should never depend on keeping us.
The work either side of this one.
Give us the ticket nobody on the team wants.
It tells us more about your codebase than any call would. A senior engineer reads every brief personally and answers it themselves.
Saravanampatti, Coimbatore, TN, India — 641035
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