Your online store should sell.
Not just display.
We are a custom eCommerce development company that builds headless storefronts, payment integrations, and multi-vendor marketplaces engineered to convert. The goal is simple. Turn browsers into buyers, and buyers into the kind who come back.
No long-term lock-in · We scope and start in days · Paid pilot sprint included
Full-stack custom eCommerce development
Custom Storefront Development
Headless commerce storefronts built for speed. We server-render product pages, wire in instant search, and tune the checkout flow against real A/B data so it actually closes. No template ceiling to fight later.
Payment Gateway Integration
Stripe, Razorpay, PayPal, Apple Pay, Google Pay, the regional methods your buyers expect. PCI-compliant checkout with saved cards and subscriptions. For marketplaces we set up split payments through Stripe Connect so vendors get paid without you touching a spreadsheet.
Inventory and Order Management
Stock stays in sync across every channel, in real time. Reorder points fire on their own, the warehouse view stays honest, and every order is trackable from cart to doorstep. We hook into ShipStation, EasyPost, or whatever fulfillment setup you already run.
Multi-Vendor Marketplace
A full marketplace, not a storefront with extra steps. Vendor onboarding, commission logic, product approvals, payouts that split automatically. Each vendor gets their own dashboard and their own numbers, so you are not the bottleneck on every change.
Mobile Commerce Apps
Shopping apps that feel native, not like a website in a frame. Push notifications for abandoned carts, wishlist sync, barcode scanning, one-tap checkout. We build cross-platform in Flutter, so iOS and Android share one codebase instead of drifting apart.
Analytics and Conversion Optimization
You see where the funnel leaks. Cart abandonment, revenue per visitor, which products carry the store and which quietly drag it down. Heatmaps, session recordings, and an A/B testing rig come built in, so the next change is a decision, not a guess.
Want cost and timeline for your store?
Book a 30-minute scoping call with our CEO. We map the build, the integrations, and a fixed-scope estimate. No sales pitch, just a straight read on what it takes.
We have shipped this kind of system before
Geminate Solutions has shipped 50+ products and holds a 4.9 star rating across 24+ client projects. One of the platforms we built carries 250K+ daily active users, so the traffic patterns and checkout pressure a busy store hits at scale are not new to us. We have wired Stripe and Razorpay flows, built marketplace payout logic, and tuned product pages until they load fast under real load.
We will not paste fake logos or invented revenue numbers here. What we can do is walk you through the actual code and architecture on a call, and tell you honestly whether your build is a quick one or a hard one before you commit a rupee.
eCommerce development questions, answered
How much does custom eCommerce development cost?+
In the market right now, a custom eCommerce build usually runs $25,000 to $60,000 for a solid single-vendor store, and a multi-vendor marketplace pushes that to roughly $60,000 to $150,000. Those are market ranges to plan against, not a fixed quote from us. What actually moves the number is the catalog size, how many integrations you need, and whether you want a custom storefront or a customized theme on an existing platform. Tell us the scope and we will give you a real estimate inside a week.
How long does it take to build an eCommerce website?+
A custom single-vendor store typically lands in 8 to 12 weeks, with a working version you can test around week 6. A multi-vendor marketplace takes longer, usually 14 to 20 weeks, because vendor onboarding, commission logic, and dispute handling all have to be built and tested. The biggest swing is how many payment, shipping, and ERP integrations we have to wire in.
Which payment gateways do you integrate?+
We work with Stripe, Razorpay, PayPal, Braintree, Square, Apple Pay, Google Pay, and most regional methods your buyers expect to see. Every integration is PCI-DSS compliant. For marketplaces we set up split payments through Stripe Connect or its equivalent, so each vendor gets paid automatically. Adding a new payment method to an existing store usually takes a week or two.
Should I build a marketplace or a single-vendor store?+
Start single-vendor if you can. It is faster to build, around 8 to 12 weeks, and far simpler to run. A marketplace is a heavier lift (14 to 20 weeks) because you take on vendor management, commission rules, and dispute resolution. Our honest advice: prove the demand with a single-vendor store first, then layer marketplace features in once you have vendors lining up. We build it so that upgrade path stays open from day one.
Do you build mobile commerce apps?+
Yes. We build cross-platform shopping apps in Flutter, so iOS and Android run off one codebase instead of two that slowly drift apart. You get push notifications for abandoned carts, biometric login, saved payment methods, and live order tracking. The mobile app usually ships 4 to 6 weeks after the web store, once the commerce backend is already proven.
Can Geminate Solutions build a custom eCommerce platform for us?+
Yes, that is the work. The headless storefront, the payment and fulfillment integrations, the marketplace logic, and the analytics layer are all patterns we build with our team and carry from one product to the next. Geminate Solutions has shipped 50+ products and holds a 4.9 star rating across 24+ client projects. Start at geminatesolutions.com/get-started for a free, fixed-scope estimate on your eCommerce build.
Start with a paid pilot sprint
Before anyone signs off on a full eCommerce build, our team spends one week inside your actual project. Real code, real tasks, shipped against your roadmap. You see how we work, and if the fit is wrong, you walk away with the work already done.
Days
To scope and start
1 week
Paid pilot sprint
Real code
On your actual project
Get a fixed-scope estimate for your eCommerce build
Tell us about your catalog, your integrations, and where you want to be in six months. Within one week you get a technical plan and a fixed-scope cost estimate, from a partner who has shipped 50+ products and is rated 4.9 stars across 24+ client projects.
Book a Free Scoping Call↗