The Сlient is a US-based startup backed by private investors. The company already had a live, AI-powered POS solution for retailers, helping businesses manage inventory, unify sales channels, process payments, track performance, and grow customer relationships.
The goal of the engagement with Developex was to modernize an existing live product by redesigning the user interface and adding new functionality within a limited timeframe. This had to be done without interrupting the platform, which was already being used by real, active customers.
US-based retail technology startup backed by private investors
POS & Commerce Solutions, Fintech Software, RetailTech, Apps for Businesses
Web Development, UI/UX Design, Legacy Project Support & Modernization
Fast POS checkout with barcode support and keyboard shortcuts; quick item creation for custom products; gift cards and vouchers; flexible discount and pricing rules; delivery order management with provider selection.
Product catalog with categories, barcodes, and tags; product kits and bundles; goods receiving and supplier tracking; purchase order management.
CRM database with customer profiles, purchase history, and custom fields; loyalty programs with subscriptions and group gifting; appointment scheduling.
Detailed reporting for sales, inventory, profitability, and cash flow; expense tracking; invoice generation; QuickBooks integration for accounting synchronization.
Employee management with role-based access and time tracking; centralized multi-location branch management; work orders for service-based businesses; e-commerce integrations with Shopify and WooCommerce.
Kanban with continuous iteration
Senior Fullstack Developers, Project Manager
PHP, TypeScript, QuickBooks, Shopify, WooCommerce
The team operated on a module-driven cycle, selecting functional areas (sales, inventory, reporting, etc.) and combining refactoring of legacy code with implementation of new features within each module, ensuring continuous progress without disrupting live operations.
Developex delivered a full UI/UX redesign and platform modernization of a live, actively-used POS system within the Client’s engagement timeframe. Key outcomes:
Five core platform areas were modernized — Sales & Checkout, Products & Inventory, Customer CRM, Financial Reporting, and Operations — each redesigned and extended with new functionality.
The platform gained QuickBooks, Shopify, and WooCommerce integrations as part of the redesign.
Changes were released module by module to the live production system, with dedicated code review and QA at each stage to protect ongoing operations.
The redesign delivered the enhanced interface and new functionality the Client set out to achieve, without a full platform rebuild.
Applied senior-level engineering discipline to a complex, high-risk modernization — refactoring legacy code and shipping new features in parallel, with rigorous code review at every stage.
Worked as an extension of the Client’s team, aligning design and technical decisions in real time through collaborative demos rather than lengthy sign-off cycles — a working style suited to startups operating on tight timelines.
Function-scoped releases and continuous iteration planning gave the Client clear visibility into progress at every stage of the engagement, rather than depending on a single high-risk launch event.
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Have a similar project — need to modernize your product, add new functionality, or scale a legacy solution while keeping your business running? Get in touch with the Developex team — let’s discuss your case and find the right approach to bring it to life.
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