Freelance web developer /Voice AI based in _Kolkata/World

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Proudly collaborated with some of the biggest brands

I’m Suman Das, an independent full-stack developer based in India, specializing in building smart, scalable, and user-focused digital solutions.

With a background in web development, VOIP/Asterisk systems, SaaS platforms, and automation tools, I help businesses and individuals bring their ideas to life with clean code and thoughtful design. Every project I take on is driven by a commitment to quality, performance, and real-world impact — whether it’s a custom website, backend system, or AI integration. If you’re looking to launch something meaningful and reliable, let’s connect and build it together — from concept to deployment.

Services

01

AI Call Assistance

Transform the way your business communicates. We build AI-powered call agents that can answer, route, and engage with customers 24/7—reducing wait times and increasing customer satisfaction. Designed for clarity, speed, and scalability, our solutions integrate seamlessly with VOIP/Asterisk systems to automate your call flows like never before.

AI-Powered 24/7 Call Agents
Answer, route, and engage with customers anytime without increasing staff workload.
Faster Support & Better Customer Experience
Reduce wait times, improve response speed, and increase customer satisfaction.
Seamless VOIP/Asterisk Integration
Connect directly with your existing VOIP or Asterisk system to automate call flows at scale.
02

Android App Development

Have an idea? We help you turn it into a sleek, functional Android app—whether it’s for your startup, local business, or a custom tool. From UI design to backend integration, we build apps that are fast, secure, and ready for Google Play. Let’s bring your vision to life—one tap at a time.

Custom Android App Development
Clean UI + Backend Integration
Fast, Secure & Google Play Ready
03

Full Stack

Our full-stack web developer is a one-stop-shop for all web development needs – from creating visually stunning front-ends to handling complex back-end processes, making our hotel website run smoothly and efficiently.

Complete Web Development Solution.
Beautiful Front-End Design.
Smooth & Efficient Backend System
.

Featured Work

Full-Stack

netfry
Website Redesign

Revamp your online presence with a modern and user-friendly Nientex website redesign that showcases your hotel’s luxury amenities and increases bookings.

Project Details ↗

Ecommerce

Brittany & Co Front Store

Front End

NeuroApp Landing Page

Full-stack

Ozone Esport Platform

instantly one

Backend and frontend

Instantly LLC Service

Let’s Talk About Your Project

Years of experience

+

Successful projects

Happy clients

Individual awards

See why they love my work

★★★★★
Suman helped us build a clean, fast, and professional website that perfectly matched our business needs. The design was simple, modern, and easy for visitors to understand. Highly recommended for anyone looking for reliable web development.
JessicaCompany Name
★★★★★
Sumandas provided a smart AI voice solution for our business that helped us automate customer conversations. The setup was practical, cost-effective, and easy to manage. It saved us time and improved how we handle calls.
EdwardsCompany Name
★★★★★
We needed a website that looked premium but also loaded quickly. Sumandas delivered exactly that. The layout, colors, and overall user experience were excellent. The final result made our brand look much more professional
MiguelCompany Name
★★★★★
Working with Sumandas was a great experience. From website design to automation and AI voice integration, everything was handled with care and clear communication. The service felt personal, professional, and result-focused.
Lawrence MCompany Name

Let’s connect and create something awesome together!

hello@sumandas.in
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