React
The component model underneath almost everything we build for the browser.
React has been the substrate of our front-end practice for a decade. It is not the newest option and that is part of the appeal — the ecosystem is mature, the hiring pool in Kolkata is deep, and the patterns that work have been settled by a very large number of teams making the same mistakes first.
We use it through Next.js for anything public-facing, through Vite for internal single-page applications behind a login, and through React Native for mobile. Sharing the component model across all three means business logic, validation rules and design tokens travel rather than being reimplemented.
What we care about most in React work is the boundary discipline: which components own state, which are pure, and where data enters. Applications that get this right stay comprehensible at fifty screens. Applications that do not become a web of prop drilling and context that nobody can safely change.
Where it fits
What React genuinely gives us
A mature component model
Composition patterns are well understood, which means a new engineer becomes productive in days rather than weeks.
Shared across web and mobile
Validation, formatting and domain logic written once can serve a Next.js site, an internal SPA and a React Native app.
Deep local talent pool
Kolkata has genuine React depth, which matters when a client eventually takes a product in-house.
Serious tooling
Profiler, strict mode, testing library and visual regression tooling make performance and correctness measurable rather than felt.
State that lives where it belongs
Most React performance and maintainability problems are state placement problems. Server state — anything that came from an API — belongs in a query cache with its own invalidation rules, not in component state that must be manually synchronised. URL state belongs in the URL, so a filtered view is shareable and survives a refresh. Genuinely local UI state stays local.
Once those three are separated, global state stores turn out to be needed far less often than teams assume, and the ones that remain are small and easy to reason about.
Data-dense interfaces that stay fast
A great deal of our React work is internal tools where the screen holds a large table, several filters and bulk actions. These fall apart at scale for predictable reasons: rendering every row, unstable keys causing full remounts, and expensive derived values recomputed on every keystroke.
We virtualise long lists, memoise derived values deliberately rather than reflexively, keep row components pure, and profile with real data volumes rather than the six rows that look fine in development.
Design systems in code
Components in the repository carry the same names as components in Figma, and tokens are exported programmatically rather than transcribed. Storybook documents every state — empty, loading, error, partial — and visual regression tests catch unintended changes. This is what makes a fifty-screen product feel like one product.
How React projects usually go wrong
These are the failure modes we look for first when we are called in to rescue somebody else's implementation.
React questions we get asked
Including where we would recommend something other than React. Call +91 70033 91355 and you will get the same answer from an engineer.
For our market the deciding factor is hiring and handover. Kolkata has a deep React pool, which means a client can take a React product in-house or find another vendor without difficulty. Vue and Svelte are excellent and we have no technical objection; we simply see more clients stranded by an unusual framework choice than helped by one.
Yes, and it is a large part of our front-end work. We start with an architecture review covering state placement, bundle composition, render performance and testing coverage, then improve incrementally rather than rewriting. Rewrites are recommended only when the data model underneath is wrong, because no amount of front-end work fixes that.
Yes. A documented component library with Storybook, exported tokens, visual regression coverage and a governance model for adding to it. Several clients now extend their own systems with us only reviewing quarterly, which is the outcome we design for.
Services built on React
Technologies we pair it with
Tell us what is slowing your business down.
A 30-minute call with a senior engineer — not a salesperson. You leave with an architecture sketch and an honest cost range, whether or not you hire us.
Direct line
+91 70033 91355Mon–Sat · 9:30 AM – 7:30 PM IST · Sealdah, Kolkata