E-commerce development services
We design and build custom ecommerce platforms for businesses that have outgrown what Shopify, BigCommerce or WooCommerce can do: B2B pricing, ERP and inventory integration, headless storefronts and a checkout built around your rules.
Built around your business
A hosted platform is the right starting point for many online stores. It stops being enough when the way you sell no longer fits its settings: prices that differ by customer, quotes and approvals before an order, stock that lives in an ERP or warehouse system, or a checkout that has to behave differently for different buyers. Teams in that position end up stacking plugins, exporting spreadsheets and re-keying orders by hand.
Custom ecommerce software development means building the parts of your store that set you apart, such as pricing logic, checkout, integrations and back-office tools, around your business instead of bending your business around a platform. Depending on the project, that can be a full custom build or a custom layer added to the platform you already use.
Not sure custom is the right move? We start with a free platform limitations review. We look at what your current platform can't do, where you're working around it, and what should stay as it is. Sometimes the honest answer is that your platform plus a few apps is enough.
Our e-commerce solutions
In a headless setup, the storefront customers see is separate from the back end that manages products, orders and pricing, and the two communicate through APIs. That frees you from theme limits and lets one back end power several front ends, such as a website, a wholesale portal or an app. The trade-off is that you own more of the system, so it pays off when front-end freedom or performance control is worth the extra engineering.
B2B buyers don't pay list price. Custom B2B ecommerce handles customer-specific price lists, volume tiers, quote requests, purchase orders, account terms and approval flows, and shows each logged-in customer the prices and catalogue agreed with them. Where pricing lives in your ERP, the storefront can read it from there instead of keeping a second copy that drifts out of date.
A store that doesn't know your real stock oversells, and one that can't send orders to your ERP creates manual work. We connect the storefront to ERP, inventory, warehouse and accounting systems so stock, orders, customers and prices stay consistent. How much work that takes depends mostly on the other system's API and data quality, which we assess before we quote.
Checkout is where custom rules matter most: shipping and tax logic, split shipments, purchase-order or invoice payment, deposits, and different flows for retail and trade customers. Payments connect to the providers you choose through their APIs. Using hosted payment fields or a redirect from a PCI DSS-compliant provider can keep card data off your own servers, which reduces your compliance scope.
Your team works in the back office every day. We build admin screens for catalogues, prices, orders, returns, customers and permissions, designed around your workflow so routine changes don't need a developer.
Why choose custom ecommerce
Scalability isn't one feature. For an ecommerce platform it comes down to decisions made early: how product and pricing data is structured, what can be cached and what must stay live (stock and price at checkout), how background jobs such as emails and inventory syncs are queued, how campaign traffic spikes are absorbed, and how each integration behaves when the system on the other end is slow or down. We work through these during architecture, before the build starts.
Platform options
No option is right for everyone. This is how they usually compare.
Full flexibility and control
Faster and cost-effective
Maximum flexibility
Our guide goes deeper on this decision: custom ecommerce software development guide.
Seamless integrations
A custom store is only as useful as the systems it connects to. These are the usual integration areas.
Not sure whether your system has an API we can use? The platform review covers that.
Our process
What works, what doesn't, and what to keep.
We choose the architecture and document every system connection and data flow.
Products, customers and order history, plus redirects for existing URLs so you don't lose search rankings.
Features are released in stages, with checkout, payment and integration testing.
Cutover, monitoring and post-launch support.
Devglim e-commerce projects start from $900, and a normally scoped, complete store typically falls in the range of $900–$2,500. Marketplaces, multi-vendor platforms, B2B builds with ERP sync and migrations, and other highly custom commerce systems can exceed that and are quoted based on scope. These are the factors that move the price most.
Beyond the build, plan for hosting, maintenance and improvements, and compare that with what a platform would cost you in subscriptions, apps and fees over the same period. After the platform review we can split the project into modules and phases, so you see the cost of each part.
See also our pricing page.
Timelines depend on the same factors as cost, plus how quickly your team can decide, provide content and give access to other systems. A store with a standard checkout and one integration is a very different project from a B2B platform with ERP sync and migration. Phasing helps: launching the highest-value parts first delivers value sooner than waiting for everything.
Payment and customer data need care from the start. Good practice means keeping card data with PCI DSS-compliant payment providers where possible, controlling who can do what in the admin, logging changes to prices and orders, keeping dependencies patched, and running backups and monitoring. We design with these in mind.
Building an online store, or key parts of one, around your business rules instead of adapting to a platform's built-in features. It can be a full build, a headless storefront on a commerce back end, or a custom layer on your existing platform.
When your business rules no longer fit a platform: customer-specific B2B pricing, quotes and approvals, stock held in an ERP, or checkout logic a platform can't support. If a platform plus a few apps covers your needs, it is usually faster and cheaper.
Devglim e-commerce projects start from $900, and a normally scoped, complete store typically falls in the range of $900–$2,500. Highly custom platforms are quoted based on scope. The biggest factors are integrations, pricing and catalogue complexity, migration, storefront design and security requirements. Contact us with your requirements and we will scope it.
It varies with scope and integrations. Phasing lets the most valuable parts launch first.
The storefront and the commerce back end are separate and talk through APIs. It suits teams that want full control of the front end, or several front ends on one back end, and it means owning more of the system.
Usually, yes. The effort depends on the other system's API and data quality, which we review during scoping. The goal is that stock, orders, customers and prices stay in sync in both directions.
Often. A custom layer for B2B pricing or checkout can sit on top of an existing platform. We assess this in the platform review before recommending a rebuild.
We plan it before the build: products, customers and order history, plus URL redirects so existing search rankings are protected.
That depends on architecture: caching, queued background work, and how integrations behave under load. These are planned at the architecture stage, and we don't promise traffic numbers without testing.
The usual approach is to keep card data with PCI DSS-compliant payment providers using hosted fields or redirects, which reduces your compliance scope.
Ask for relevant case studies, evidence of integration experience with systems like yours, who owns the code, how phases and costs are quoted, and what support follows launch.
Pricing
Typical investment: $900–$2,500
Final pricing depends on features, integrations, design complexity and project requirements. Complex projects are quoted based on scope.
Start with a free platform limitations review. Tell us what your current platform can't do and we'll tell you honestly whether custom, a platform plus a custom layer, or staying put makes sense.
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