Retail and Ecommerce

Retail software has one job: sell the product and get it to the customer without anyone re-keying an order. PS3G provides ecommerce software development and the integration and data work around it for organizations of every size: a single-location store going online for the first time, a direct-to-consumer brand that has outgrown its first platform, a distributor adding B2B ordering for trade customers, or the ecommerce team at a multi-brand retailer that needs a headless storefront or an order-management integration.

We build the store and the apps, connect them to inventory, ERP, payments and fulfillment, and turn the data into reporting and personalization you can defend to a privacy regulator. Our team works from Wilmington, Delaware with an India delivery center, which also helps with peak-season support.

What we build for retail

• Online stores: ecommerce website development on WooCommerce, Shopify, Adobe Commerce (Magento) or BigCommerce, and headless storefronts on Next.js or .NET when the catalog, pricing or checkout logic does not fit a template.
• B2B ordering portals: customer-specific pricing and catalogs, quotes, approvals, credit limits, reorder lists and punch-out for larger buyers.
• Mobile commerce apps: ecommerce app development services for iOS and Android with loyalty, push notifications, in-store barcode scanning, buy-online-pick-up-in-store and wallet payments.
• Retail software development for operations: inventory and order management, product information management, returns processing, store task apps and back-office tools that replace spreadsheets.

Systems we commonly integrate

ERP and accounting (Microsoft Dynamics 365 Business Central and Finance, SAP Business One, NetSuite, QuickBooks), point-of-sale systems, warehouse management and third-party logistics providers, payment gateways, shipping carriers, sales-tax calculation services, marketplaces such as Amazon, eBay and Walmart, email and SMS marketing platforms, CRM, PIM and customer-support tools.

Typical first ecommerce software development projects

Organization	A common first engagement	What it usually becomes
Single store or new online brand	A fixed-scope store launch on Shopify or WooCommerce with inventory synced to the POS or accounting system	A mobile app, email automation and dashboards
Growing DTC brand or distributor	A replatform or headless storefront, or a B2B ordering portal, with ERP and 3PL integration	A dedicated team with a release cadence planned around peak seasons
Ecommerce team at a multi-brand retailer	An integration layer between storefronts, ERP, order management and warehouses	Staff augmentation inside your team, under your security and procurement rules

Stores and apps

The platform decision is mostly a question of how unusual your business is. A hosted platform fits a standard catalog and checkout. An open-source platform fits when you need control of the code and hosting. A headless or custom build fits when pricing, configuration, subscriptions, B2B rules or multi-brand operations do not fit a template. We lay out the trade-offs in a short assessment and build on the platform you choose; our ecommerce development service covers all three paths.

Path	Fits when	Watch out for
Hosted platform (Shopify, BigCommerce)	Standard catalog and checkout, small team, speed to launch matters most	Transaction fees, customization limits, app sprawl
Open source (WooCommerce, Adobe Commerce)	You want control of code, hosting and data	Hosting, security patching and performance are your responsibility
Headless or custom (Next.js, .NET)	Complex pricing, B2B rules, multi-brand or unusual checkout flows	Higher build cost; needs a team to maintain it

A mobile app pays off when customers buy repeatedly, when loyalty matters, or when the app does something in the store, such as scanning, pickup or stock checks. If none of those apply, a fast mobile web experience is the better investment. Our mobile app development team builds native or cross-platform apps that share APIs with the store. Every store and app we build is tested for speed, search visibility and accessibility; retail sites are frequent targets of ADA website complaints, so WCAG conformance is part of the scope.

Inventory, ERP and fulfillment integration

Most ecommerce pain is integration debt: stock levels that lag, orders re-keyed into the ERP, returns handled by email, three systems disagreeing about a product’s weight. We connect storefront, ERP, POS, warehouse or 3PL and shipping through APIs or an integration layer, with a clear owner for each data item (price, stock, product content) and near-real-time flows for the items that matter. Large retail customers that require EDI get it. Our API development and integration service does this work.

Domain rules shape the design. Card data stays out of your systems through hosted payment fields and tokenization, which keeps PCI DSS scope small. State consumer privacy laws affect what you collect, how you honor opt-outs and how you handle deletion requests. Sales-tax collection depends on where you have nexus, which your accountant determines and a tax service calculates. We design to the current official requirements and your advisors’ guidance. This is general information, not legal advice.

Analytics and personalization, governed

Once the systems agree on the data, reporting becomes possible: sell-through by SKU and channel, margin after shipping and returns, inventory turns, acquisition cost and repeat-purchase rates. Our data analytics team builds the warehouse and dashboards on SQL Server, Azure or AWS and Power BI. Personalization and AI features come next: search and recommendations, product question assistants, demand forecasting for reorders, and customer-service agents with hand-off to a person.

Governed means three things: customers know what you collect and can opt out, personal data is protected and deleted on schedule, and automated pricing or offers are checked for unfair outcomes. We build consent management, retention and audit logging into the data platform so personalization does not become a privacy complaint.

How we work with retailers

Fixed-scope projects for a store launch or integration, a dedicated team or staff augmentation that scales with your roadmap, managed services where we run and support the store under defined SLAs with a code freeze before peak season, or advisory for platform selection. How we start: a first conversation, a short assessment and a written proposal.

Get a fixed-scope quote for your store, app or integration.

Related services

• Ecommerce development: stores on hosted, open-source and headless platforms.
• Mobile app development: commerce and loyalty apps for iOS and Android.
• API development and integration: storefront, ERP, POS, WMS and carrier connections.
• Data analytics: sell-through, margin and customer dashboards.
• All industries we serve.

Frequently asked questions

Which platform should we use for ecommerce website development?

It depends on how standard your catalog and checkout are. Shopify or BigCommerce suit most single-brand stores with a small team. WooCommerce or Adobe Commerce suit companies that want control of code and hosting. A headless or custom build suits complex pricing, B2B rules or multi-brand operations. We recommend after a short assessment, not before.

Can you sync inventory between our store, POS and ERP?

Yes. We decide which system owns each piece of data, then build near-real-time flows for stock and orders and scheduled flows for product content and pricing. The integration logs every message so a mismatch can be traced, and it handles returns and cancellations, which is where most home-grown syncs fail.

Do you build ecommerce apps for iOS and Android?

Yes. Our ecommerce app development services cover native and cross-platform apps with loyalty, push notifications, saved payment methods, in-store scanning and pickup features, sharing the same APIs as your store. We recommend an app only when repeat purchase, loyalty or in-store use justifies it; otherwise a fast mobile web store is the better spend.

How do you handle PCI DSS in an online store?

We keep card data out of your systems. Payments run through hosted fields or redirects from an established gateway, with tokens stored for repeat purchases, which keeps your PCI scope small. Your payment provider and auditor confirm the requirements that apply; we build the store and its integrations to fit them.

Can you take over an online store built by another agency?

Yes. We start with a review of the code, hosting, integrations and open issues, then agree a fixed scope for stabilization before adding features. For stores on WooCommerce, Shopify or Adobe Commerce the hand-over is usually quick; for custom ecommerce software development we document the system first.