How much does custom web development cost?

Our web development projects typically start at $3,000 for a standard marketing site and go up to $50,000+ for complex SaaS applications. We provide fixed-price quotes after a free discovery call so you know exactly what you're paying before we start.

How long does it take to build a website?

A standard marketing website takes 4-6 weeks. A custom web application or SaaS platform typically takes 8-16 weeks depending on complexity. We deliver in 2-week sprints so you see progress from day one.

Do you build websites with React and Next.js?

Yes, React and Next.js are our primary frameworks. We use Next.js App Router for SEO-critical sites and React with Vite for single-page applications. We also work with Vue.js and Svelte when project requirements call for it.

Can you redesign my existing website?

Absolutely. We handle full redesigns, incremental migrations, and performance overhauls. We can modernise your tech stack, improve Core Web Vitals scores, and add new functionality while preserving your SEO equity.

Do you provide hosting and maintenance after launch?

We deploy to platforms like Vercel, AWS, or your preferred infrastructure. Post-launch, we offer 30 days of free bug-fix support and optional monthly retainer plans for ongoing maintenance, updates, and feature additions.

What is your web development process?

We follow a 6-step process: Discovery, Architecture & Design, Sprint Development, QA & Testing, Launch, and Post-Launch Support. Every project includes a dedicated project manager, bi-weekly demos, and transparent progress tracking.

Do you work with international clients?

Yes, about 60% of our clients are based in the US, UK, and Australia. We maintain working-hours overlap with all major timezones and communicate asynchronously via Slack, Loom, and weekly video calls.

Is my website going to be SEO-friendly?

SEO is built into our architecture from day one. We implement server-side rendering, structured data markup (JSON-LD), semantic HTML, optimised meta tags, image compression, and Core Web Vitals optimisation as standard practice.

Starting from $3,000

Web Development Company in Kolkata

Looking for a reliable web development company in Kolkata? Innovatrix Infotech designs and engineers high-performance web applications that drive revenue, improve user retention, and rank on Google. From responsive marketing sites to complex SaaS platforms, our Kolkata-based full-stack developers deliver pixel-perfect, accessible, and blazing-fast web experiences.

Innovatrix Infotech is a leading web development company in Kolkata, India, serving startups, SMBs, and enterprises across Kolkata, Bangalore, Delhi, Mumbai, the US, UK, and Australia. Based in Phoolbagan, Kolkata, our engineering-first approach means every line of code is reviewed, tested, and optimised for Core Web Vitals. Whether you need a headless CMS-driven marketing site, a real-time dashboard, or a multi-tenant SaaS product, we bring 4+ years of production experience and a portfolio of 50+ successful launches.

Sub-2s load times on 3G networks
100% Lighthouse accessibility score
SEO-first architecture with structured data
Mobile-responsive across all breakpoints
CI/CD pipeline with automated testing
Post-launch support and monitoring

Get a Free Web Dev Quote Book a Discovery Call

50+ Clients Served

4+ Years in Business

UK/AUS/US Overlap

What we build

What does Web Development Company in Kolkata include?

Custom Web Application Development

Bespoke web apps built with React, Next.js, or Vue.js tailored to your business logic and user workflows.

SaaS Product Development

Multi-tenant SaaS platforms with authentication, billing integration, role-based access, and analytics dashboards.

Headless CMS & Marketing Sites

Lightning-fast marketing websites powered by headless CMS platforms like Directus, Sanity, or Contentful.

Progressive Web Apps (PWA)

Offline-capable, installable web apps that deliver native-like experiences without app store distribution.

E-commerce Web Development

Custom e-commerce platforms with payment gateway integration, inventory management, and conversion-optimised checkout flows.

API Development & Integration

RESTful and GraphQL APIs, third-party integrations, payment gateways, CRM connectors, and webhook architectures.

What's included

Everything you need to succeed with Web Development Company in Kolkata

Performance Engineering

Every build is optimised for Core Web Vitals. We enforce performance budgets, lazy-load assets, and implement edge caching strategies.

Responsive & Accessible Design

WCAG 2.1 AA compliant interfaces that work flawlessly across desktop, tablet, and mobile devices.

SEO-First Architecture

Server-side rendering, structured data markup, semantic HTML, and optimised meta tags built into every page.

Security & Compliance

OWASP Top 10 protection, input sanitisation, CSRF/XSS prevention, and optional SOC 2 compliance readiness.

Why choose us

Why businesses trust us for Web Development Company in Kolkata

Fixed-Price Projects

Fixed-Price Transparency

No hourly billing surprises. Every project starts with a detailed scope document and a fixed quote you can budget around.

0-Week

Sprint Cycles

Sprint-Based Delivery

We ship working software every 2 weeks with demos, feedback loops, and iterative improvement built into the process.

0%+

Test Coverage

Production-Grade Quality

Automated testing, code reviews, and CI/CD pipelines ensure every deployment meets enterprise reliability standards.

Timezone Overlaps

Timezone-Friendly Collaboration

Based in Kolkata with working-hours overlap for US, UK, and Australian clients. Daily async updates via Slack.

Our tech stack

Technologies we use for Web Development Company in Kolkata

Frontend

React

Next.js

TypeScript

Tailwind CSS

Backend

Node.js

Express

Database

PostgreSQL

MongoDB

Redis

DevOps

Docker

AWS

Vercel

Tools

GitHub Actions

Vitest

Figma

How it works

Our process — start to finish

Discovery & Requirements

We audit your goals, audience, and technical constraints through a free discovery call. Deliverable: a detailed project brief and scope document.

Architecture & Design

Our team designs the information architecture, wireframes, and UI mockups in Figma. You approve before a single line of code is written.

Sprint Development

We build in 2-week sprints with regular demos. Each sprint delivers tested, deployable features you can interact with.

QA & Performance Testing

Automated testing, cross-browser QA, accessibility audits, and Lighthouse performance benchmarking before launch.

Launch & Deployment

Zero-downtime deployment with rollback capability. DNS configuration, SSL setup, and CDN configuration included.

Post-Launch Support

30 days of free bug-fix support, performance monitoring dashboards, and optional retainer for ongoing enhancements.

Typical timeline: 12 weeks

Client stories

What our clients say

Honest words from people who've been through the process. No stock photos, no made-up companies.

“Innovatrix didn't just build our Shopify store — they thought through the whole customer journey. Our conversion rate went up 34% in the first month.”

Priya Mehta

Founder, Bloomfield Retail

“We've worked with three agencies before. Innovatrix is the first one that actually explained what they were doing and why. On time, on budget.”

Rahul Agarwal

Director, Operations, NovaTrade Logistics

“The AI automation workflow they set up saved our team 12 hours a week. We were skeptical about AI but they made it practical and measurable.”

Dr. Nandita Roy

Managing Director, Saffron Healthcare

Industries we serve

Industries we help with Web Development Company in Kolkata

E-commerce & Retail

Online stores, marketplaces, and inventory management platforms.

SaaS & Technology

Product dashboards, admin panels, and multi-tenant platforms.

Healthcare

HIPAA-aware patient portals, telemedicine interfaces, and health data dashboards.

Education & EdTech

Learning management systems, course platforms, and student portals.

Finance & FinTech

Payment platforms, financial dashboards, and reporting tools.

Media & Publishing

Content platforms, digital magazines, and editorial workflows.

Questions answered

Common questions about Web Development Company in Kolkata

Still have questions?

Our team typically responds within 24 hours.

Get in touch

How we compare

Agency vs freelancer vs in-house

Feature	Our Approach	Freelancer	In-House
Fixed-Price Quotes	Always	Rarely	N/A (salary)
Dedicated Team	Yes, 2-4 engineers	Single person	Yes, but costly
Sprint Demos	Every 2 weeks	Inconsistent	Internal only
Automated Testing	90%+ coverage	Rare	Varies
Post-Launch Support	30 days free	Paid hourly	Ongoing salary
Scalability	Scale team up/down	Limited	Hiring overhead

Fixed-Price Quotes

Our ApproachAlways

FreelancerRarely

In-HouseN/A (salary)

Dedicated Team

Our ApproachYes, 2-4 engineers

FreelancerSingle person

In-HouseYes, but costly

Sprint Demos

Our ApproachEvery 2 weeks

FreelancerInconsistent

In-HouseInternal only

Automated Testing

Our Approach90%+ coverage

FreelancerRare

In-HouseVaries

Post-Launch Support

Our Approach30 days free

FreelancerPaid hourly

In-HouseOngoing salary

Scalability

Our ApproachScale team up/down

FreelancerLimited

In-HouseHiring overhead

Get started

Ready to talk about your project?

Whether you have a clear brief or an idea on a napkin, we'd love to hear from you. Most projects start with a 30-minute call — no pressure, no sales pitch.

No upfront commitmentResponse within 24 hoursFixed-price quotes