Custom E-commerce SaaS Development

Ujjwal Technolabs builds custom e-commerce software — a multi-tenant storefront, admin, and native shopping app where you own every line of code. Founded by Deepak Nagar (12+ years full-stack), we run our own live e-commerce SaaS, FlexiCommerce, so we build from real production experience, not theory.

The problem with off-the-shelf carts

Hosted platforms and plug-in carts are excellent for a simple shop. But they hit a wall the moment your business needs something they weren't designed for: a multi-vendor marketplace, a custom checkout flow, your own pricing or discount logic, or tenant-specific catalogs. You bolt on apps, fight their constraints, and still don't own the result.

Worse, most of these platforms charge a percentage of every transaction — forever. As your volume grows, so does the rent you pay on software you'll never own. For a serious, long-lived business, that's a tax on your own success and a permanent dependency on someone else's roadmap.

What we'd build

We build a multi-tenant e-commerce platform that is genuinely yours: a customer-facing storefront, a powerful admin, and a native shopping app — the exact shape we already shipped into FlexiCommerce. The core surface area includes:

• Catalog and product management with variants, categories, and tenant-specific listings
• Cart, checkout, and order management with logic you control end to end
• Inventory tracking across products and (where needed) multiple vendors
• Multi-currency support for selling across borders
• A native Flutter shopping app for your customers
• Payments via Razorpay and PhonePe (and other gateways where required)

Because the platform is multi-tenant from the start, you can run many stores — or many vendors — from one codebase, with isolated data and shared infrastructure. Custom pricing rules, bespoke checkout steps, and your own business logic are first-class features, not workarounds.

The stack we'd likely use

We aren't locked to one stack — we build with whatever the product needs — but for an e-commerce SaaS this is our proven, production-tested toolkit:

• Laravel 12 / PHP — the backend and APIs
• Vue 3 / Inertia — a fast, modern storefront and admin
• Flutter — the native shopping app
• MySQL — reliable, well-understood data layer
• Razorpay / PhonePe — payment processing

This is the same foundation behind FlexiCommerce, which spans roughly 450,000 lines of code, 187 data models, ~500 API endpoints, and three native Flutter apps — built solo in about 2.5 months. We're not learning e-commerce on your project; this is our home turf.

Scope and honest pricing

A custom e-commerce SaaS like this starts from ₹3,50,000. We bill monthly as the product ships — pay-as-it-ships — so you fund real, working software in stages rather than a giant upfront cheque. You get full code ownership from day one, you can pause anytime, and there's no platform lock-in and no per-transaction tax on your revenue.

The final number depends on scope: a single-store launch is lighter than a full multi-vendor marketplace with several native apps and complex pricing rules. We'll map your exact requirements into a clear plan before any code is written. See our pricing for how the model works, browse our services, or request a free build plan tailored to your store.

Why build with us

Most agencies that quote you e-commerce work have never operated an e-commerce product. We do. FlexiCommerce is a live, multi-tenant e-commerce SaaS with paying customers — featuring multi-currency, multiple country variants, an AI store generator, and native apps. The decisions you'll face (inventory edge cases, checkout abandonment, tenant isolation, payment retries) are decisions we've already made in production.

To be fair: if you sell a handful of simple products and don't need custom logic, a hosted platform is faster and cheaper to start — and we'll tell you so honestly. Custom SaaS development makes sense when you need to own the platform, when off-the-shelf constraints are actively blocking your business, or when per-transaction fees have become a real cost at your volume. If that's you, we're a strong fit. Reach out at deepak@flexicommerce.in.