Senior React engineers · Vetted · from $1,500/mo

Hire React developers, shortlist in about 48 hours

Qilin Lab is a 35+ engineer software firm in Bengaluru, India. Companies hire React developers from Qilin Lab full-time, at $1,500 per developer per month and up, with nothing to pay upfront. Expect a matched shortlist about 48 hours after your brief, and the developer in your team a week later. Days 1 to 3 are the trial: stop inside them and you owe nothing. This is for employers, not job seekers.

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What we staff around React

ReactTypeScriptNext.jsReact NativeNode.jsExpress.jsPostgreSQLRedisDjangoAWSDockerKubernetes

$1,500

per developer / month, to start

48h

to a matched shortlist

3-day

risk-free trial — pay only if you keep them

upfront — pay only when you hire

Scope of the role

What a senior React engineer should be able to pick up in your codebase

Knowing React is common. In the 2025 Stack Overflow Developer Survey, 44.7% of the 23,678 respondents who answered the web frameworks question reported extensive work in React over the past year. Among the 19,460 professional developers who answered it, 46.9% did. Only Node.js, at 48.7%, ranked higher. Depth across the whole front end is rarer.

A senior engineer works in every layer of a production React front end without being taught each one. The table lists ten layers, what most teams use in each, and what seniority looks like. Mark your own picks in the brief and the shortlist is matched to them.

The middle column is the wider React ecosystem, not Qilin Lab project history. Framework facts come from the linked docs, opened 21 September 2026.
Layer	What most teams use	What senior looks like
Components	Function components and hooks. Classes in older code.	Writes functions and can still repair classes. React's reference says classes are still supported but not recommended for new code.
Client state	`useState`, `useReducer`, context. Redux Toolkit or Zustand where a store is justified.	Keeps state close to where it is used. Knows the Redux maintainers call Redux Toolkit their official recommended approach.
Server data	TanStack Query, SWR or RTK Query.	Treats API responses as a cache with loading, error and stale states, not as global state.
Routing	React Router, or file-based routes in Next.js.	Nested layouts, code-split routes, and filters kept in the URL so a link reproduces the screen.
TypeScript	Typed props and API responses.	Types that catch real mistakes, with few `any`. React 19 ignores `propTypes`, and the React team points to TypeScript instead.
Testing	Jest or Vitest, React Testing Library, Playwright or Cypress.	Tests what the user sees, so a refactor does not break them.
UI and styling	Your design system, or a library such as MUI. Tailwind CSS or CSS Modules.	Builds from the design file and extends the shared button before writing a second one.
Build tooling	Vite, webpack or a framework's bundler.	Reads a bundle report. Can move an app off Create React App, deprecated for new apps on 14 February 2025.
Accessibility	Semantic HTML, then ARIA where HTML runs out.	Uses a real `<button>`, manages focus in dialogs and labels every input.
Performance	React DevTools Profiler, Core Web Vitals, code splitting.	Measures before changing code. Knows React Compiler 1.0, released 7 October 2025, memoizes components automatically.

What Qilin Lab has on file: React is in the technology list of 7 of the 14 case studies on this site, next to Node.js, Express.js, Django, Python, PostgreSQL, Redis, AWS, Docker and Kubernetes. We also staff TypeScript, Next.js and React Native. If your app depends on a library outside that list, name it in the brief. Better to learn at the shortlist stage that nobody fits than in week two.

react.dev listed React 19.3 as the latest version, dated 9 September 2026, when this page was written.

Fit

When a contract React developer is the right call, and when it is not

This model works when you have a product, a backlog and someone who reviews code. Here is where it fits, and where we would send you elsewhere.

It fits when

The front end is the bottleneck. Designs are approved, the API exists, and screens are not shipping fast enough.
The work has an end. A redesign, a new module, a move off Create React App, class components to hooks, or an upgrade to React 19. You need more hands for months, then fewer.
Someone on your side sets priorities and reviews pull requests: a CTO, a tech lead or a senior engineer.

It does not fit when

The work is a fortnight long, or part-time. The unit here is one developer, full-time, billed by the month. For two weeks of work, or ten hours a week, a freelance marketplace costs less and suits you better.
You need a permanent employee. The developer remains a Qilin Lab employee and never joins your payroll, and there is no placement fee, so this is not recruitment. If the role is permanent, hire locally and budget from the salary table below.
Nobody technical is on your side. That is a project build, not staff augmentation. Qilin Lab takes those on under software development, which is how the case studies below were delivered.
You are a React developer looking for work. This page sells to employers. Applications go through the careers page.

If you are still choosing between models, how staff augmentation compares with outsourcing, a dedicated team and an in-house hire is set out separately, with ten questions to put to any vendor.

Interviewing

Eight questions to ask a senior React developer, with what a strong answer sounds like

Every developer we shortlist has already cleared a coding test and a live interview on engineering and on spoken English. Interview them yourself anyway. These eight questions are written for this page, not lifted from that assessment, and each links to the documentation its answer rests on.

1. What did you change first in a React app you did not start, and what did you leave alone?

Strong: a named app, a specific first change, and a reason for leaving working code untouched. Weak: "I would rewrite it."

2. When do you not need an Effect?

Strong: Effects synchronise with things outside React, such as the network or a browser API. Values you can calculate from props or state are calculated during render, and click logic belongs in the click handler. The React docs call Effects an escape hatch and name both cases.

3. Why is the array index a poor key?

Strong: keys tell React which item is which between renders. Insert, delete or sort rows and an index key points at a different row, so state lands on the wrong line. The docs warn of subtle and confusing bugs. The fix is a stable id from the data.

4. A table filter that must survive a refresh, a list from the API, and a dialog's open flag. Where does each live?

Strong: the URL, a server-data cache, and local component state. The reasoning matters more than the library names. Weak: all three in one global store.

5. In development my Effect runs twice. Is that a bug?

Strong: no. Strict Mode re-runs Effects once more in development to expose missing cleanup. The fix is a cleanup function that aborts the request or removes the listener. Weak: "remove Strict Mode".

6. In the Next.js App Router, what runs on the server and what runs in the browser?

Strong: Server Components are not sent to the browser, so they cannot use useState. Files that need it start with 'use client'. There is no directive for Server Components, and 'use server' marks Server Functions. The docs list that as a common misunderstanding. Skip this one if you do not use Server Components.

7. A screen feels slow. What do you do before touching the code?

Strong: they measure first. The React DevTools Profiler for the component tree, field data for what users actually get. The published Core Web Vitals thresholds are Largest Contentful Paint within 2.5 seconds, Interaction to Next Paint of 200 milliseconds or less, and Cumulative Layout Shift of 0.1 or less, each at the 75th percentile of page loads. React Compiler memoizes at build time and supports React 17, 18 and 19, so hand-written useMemo is no longer the first move.

8. How do your tests show a component is accessible?

Strong: they find elements by role and accessible name. Testing Library ranks getByRole as the top-preference query and notes that if an element cannot be selected that way, the UI may be inaccessible. They also do a keyboard-only pass and manage focus in dialogs. Weak: "we audit at the end".

Ask every candidate the same eight and write the answers down. A senior engineer will dispute at least one premise and explain why. That is a good sign.

Cost

What it costs to hire React developers: official salary figures against a monthly contract

No statistics agency publishes pay for React developers. They report by occupation code, so the honest comparison is the code that contains React work. Figures stay in local currency and are not converted into dollars.

Official employee pay for software developers, opened 21 September 2026, against Qilin Lab's starting rate.
Where	Figure	What it measures	Date of the data
United States	$135,980 a year (about $11,330 a month)	Median annual wage, software developers. Lowest 10 percent under $82,460, highest 10 percent over $214,670. US Bureau of Labor Statistics.	May 2025
United Kingdom	£56,914 a year (about £4,743 a month)	Median gross annual pay, full-time employees on adult rates who had been in the job for a year or more, SOC 2134 programmers and software development professionals. ONS ASHE Table 14.7a, provisional.	Tax year to 5 April 2025
Canada	C$48.08 an hour (about C$8,330 a month at 2,080 hours a year)	Median wage, NOC 21232 software developers and programmers. Low C$30.00, high C$76.92. Job Bank, from Statistics Canada's Labour Force Survey.	2023-2024, updated 19 November 2025
Qilin Lab	from $1,500 a month	Contract fee for one senior engineer, full-time. A starting rate: the final rate is confirmed on your shortlist.	21 September 2026

The monthly figures there are ours, not the agencies': annual medians divided by 12, and the Canadian hourly rate at 2,080 paid hours a year, roughly C$100,000. Twelve months at Qilin Lab's starting rate is $18,000.

Limits of this comparison

A salary is not the cost of an employee. These figures leave out employer payroll taxes, benefits, equipment and recruiting fees. Employer spending on wages was 70.0% of total compensation cost in June 2026, with benefits the other 30.0%, across all US private industry (BLS Employer Costs for Employee Compensation, released 9 September 2026). That average covers every occupation, not software alone.
The official figures cover every software developer, from first job to principal, in every language. Expect a senior hire to sit above the median.
$1,500 is where pricing starts, not a quote. It is a fee for a contractor in India, not a salary, so the rows are not like for like.
No UAE row: we could not open an official wage series for software developers there, and would not substitute a recruiter's estimate. The Australian figure, and the four-country table converted into US dollars, sit on our page about hiring developers in India.

Code ownership, governing law and arbitration are in our terms.

The rest of the stack

How React pairs with Next.js, Node.js and your back end

React renders the interface and nothing else. What you need next to it decides which engineer to ask for.

React with Next.js

The React docs say to start new apps with a framework and list the Next.js App Router first. If you need server rendering, indexable pages or Server Components, the work is as much Next.js as React: see hire Next.js developers. qilinlab.com is a Next.js 14 App Router site built by the team.

The Next.js docs name two routers: the newer App Router, where Server Components run, and the Pages Router, the original, which the docs say is still supported and being improved. Settle which one your codebase uses before you write the brief.

React with Node.js

The pairing we have shipped most. Spend The Bits, Canco Petroleum, Kashti FinServ and EcoProcurer all list React with Node.js, two of them with Express.js. One language on both sides lets one engineer follow a bug from the button to the query. In the Stack Overflow survey above, Node.js, React, Next.js (20.8%) and Express (19.9%) were four of the five most-used web technologies. For API-heavy backlogs, see hire Node.js developers.

React with Django or Python

React does not care what language the API is written in. Eduley lists React with Django, and AllIndex lists it with Python and Node.js. What matters is a typed, documented contract between the two sides.

One engineer for both sides

If tickets cut across API and UI, a full-stack developer at the same starting rate saves handoffs. Pick a React specialist when the front-end backlog alone fills the month: a design system, a large migration, accessibility or performance work.

React on phones

React Native builds native Android and iOS apps with React. Components and hooks carry over. Navigation, native modules and store releases do not. Mobile engineers start from $1,600 a month.

Onboarding

Joining an existing React codebase: what the first week should look like

The trial is 3 days, so the first three days must produce evidence. Plan them before the start. This advice applies to any contract React engineer, ours or not.

Before day 1

Repository access, a working .env file and a staging login.
One named reviewer who answers within the working day. Overlap hours decide how much of that review happens live; the hour-by-hour table for a Bengaluru working day shows what your window would be.
Three tickets picked in advance: one trivial, one small bug with steps to reproduce, one small feature.

Day 1: run it and prove the pipeline

The app runs locally. The developer reads the router, the data layer and one feature end to end, then ships the trivial ticket through branch, review, CI and staging. You are testing access and tooling, not the change.

Days 2 and 3: one real bug

Watch four things: precise questions asked early, a small pull request a stranger could follow, a test that fails without the fix, and the response to review comments. By the end of day 3 you have merged work and a written exchange to judge.

Days 4 and 5: a feature and a findings note

The small feature, plus a one-page note on what they found. In an older app, look for two items in that note: a build still on Create React App, and a React version below 18.3. The React 19 upgrade guide says to move to 18.3 first, because it adds warnings for APIs React 19 removes, such as ReactDOM.render, string refs and legacy context.

Not in week one

A rewrite, a new state library or a new folder structure. Those proposals come after shipping inside the code as it is.

Shipped by Qilin Lab engineers

React work our engineers have shipped.

These products were built and are run by Qilin Lab project teams. They are not staff-augmentation placements. The numbers are as the case studies report them.

Canco PetroleumAdmin portal, website and fleet management for a Canadian fuel retailer, run by 10 engineers over 3 years and ongoing. Stack: React, Node.js, Express.js, PostgreSQL, AWS, Kubernetes.200+ fuel stations connectedRead the case study → Kashti FinServDigital loan origination with e-sign and e-KYC, built from scratch by 7 engineers. Stack: React, Node.js, Kubernetes, Docker, PostgreSQL, AWS.3 → 3,000+ applications per dayRead the case study → EduleyLearning management system with teacher, student and admin workspaces and DRM-protected content, built by 8 engineers. Stack: React, Django, Kubernetes, AWS, PostgreSQL, Redis.99.9% platform availabilityRead the case study →

How it works

From brief to shipping, in about a week.

No sales maze. Tell us what you need and we do the matching — you only meet developers who already passed our bar.

Tell us what you need

Share your stack, the work, and how many developers. Two minutes is enough.

Get a shortlist

We match vetted developers to your brief and send a shortlist to review.

~48 hours

Interview & pick

Meet the shortlist, ask anything, and choose the engineer who fits.

Start risk-free

Begin with a 3-day trial. Keep them only if you're happy.

pay only if you continue

Pricing

One monthly rate per developer.

Predictable, no upfront cost, and a fraction of hiring the same seniority locally. Final rate depends on seniority and stack — we confirm it on your shortlist.

Building a team?

Need several developers, or a lead plus a squad? We'll assemble a team and a blended rate that fits the roadmap.

✓ Multiple developers, coordinated as one team
✓ Optional tech lead to run delivery
✓ Volume pricing across the team
✓ One point of contact at Qilin

Talk to us about a team

Questions, answered

Before you hire a React developer.

Can your React developers work in an existing Redux or class-component codebase?

Put it in the brief and the shortlist is matched to it. Legacy Redux and class components are normal in a codebase that has been earning money for years. What matters is the rule you set before day one: convert a file when someone touches it for another reason, never as a rewrite. Agree that in writing, or the trial gets spent arguing about it instead of shipping.

Do they work with the Next.js App Router or the Pages Router?

Both. Put the router and the Next.js version in the brief: the file layout, the data fetching and the place the code runs all differ between them. Qilin Lab built its own site on the Next.js 14 App Router. If the work is mostly framework rather than component work, the Next.js developers page goes further.

How much does it cost to hire a React developer through Qilin Lab?

From $1,500 a month for one senior React engineer, full-time on your work, with nothing to pay upfront and a 3-day trial. Seniority and your stack move the figure, and we quote the exact number with the shortlist, before you meet anyone. Twelve months at the starting rate is $18,000. Mobile engineers, React Native included, start at $1,600. The cost table on this page sets that against official salary data.

Who owns the React code the developer writes?

You do, once it is paid for. Under the terms on this site, on full payment Qilin Lab assigns the intellectual property in bespoke deliverables to the client. Pre-existing Qilin Lab tools stay with Qilin Lab and are licensed to you where embedded, and a signed statement of work can change these defaults. Governing law is India, with MCIA arbitration seated in Bangalore, in English.

What does the 3-day trial cover for a React hire?

The first 3 days of the engagement, which should go on real tickets from your backlog. If it is not working, you do not continue and you do not pay. Three days is shorter than some vendors offer. It shows whether someone can run your app, read your components and ship a small reviewed change, not how they handle a long project.

How many hours will the developer overlap with our team?

Developers are matched to overlap with your working hours, so stand-ups and code review happen live. The engineers are in India. We publish no fixed schedule: the right overlap for California differs from London or Sydney. Put your stand-up time in the brief and have the agreed hours written into the engagement contract.

I am a React developer. Can I apply through this page?

No. This page is for companies hiring contract React developers through Qilin Lab. The form is for hiring enquiries only, so please do not send a CV through it. To work at Qilin Lab, use the careers page on this site.

Sources

Last updated 23 September 2026 · Qilin Software Lab Private Limited, Bengaluru, India

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