Retail & eCommerce Software Development — Headless Commerce, Marketplace & OMS
Custom retail technology for brands, multi-vendor marketplaces, D2C businesses, and omnichannel retailers — headless commerce storefronts, OMS, POS integration, loyalty platforms, AI personalisation, and subscription commerce. 150+ retail/eCommerce projects. 15+ years.
What We Build for Retail & eCommerce
Headless storefronts, multi-vendor marketplaces, OMS/IMS, POS integration, loyalty platforms, PIM, D2C and B2B portals, AI personalisation, and retail analytics.
Custom eCommerce Storefront
Bespoke eCommerce platform — product catalogue and PIM integration, advanced search and filtering (Elasticsearch/Algolia), faceted navigation, product configurator, personalised homepage and category pages, multi-currency and multi-language, guest checkout and account, wishlist, recently viewed, cross-sell and upsell, and conversion-optimised checkout with Apple/Google Pay.
Headless Commerce (Next.js + API)
Headless architecture decoupling frontend from commerce backend — Next.js storefront with sub-second page loads, connected to Shopify, Magento, Commercetools, or a custom commerce API. Deliver rich content experiences (blogs, lookbooks, quizzes) alongside product pages, with a single unified cart and checkout. PWA capability for offline browsing and app-like UX.
Multi-Vendor Marketplace
Full marketplace platform — vendor onboarding and verification, individual vendor storefronts, multi-vendor cart and checkout, payment splitting and commission management (Stripe Connect), order routing by vendor, vendor dashboard (orders, inventory, payouts, reviews), dispute management, admin moderation tools, and consumer-facing marketplace with advanced search and recommendation.
Order & Inventory Management System
Unified commerce OMS/IMS — multi-channel order aggregation (website, marketplaces, POS, social), inventory sync across locations (warehouse, store, 3PL), real-time stock levels, purchase order management, demand forecasting, batch fulfilment, returns management (RMA), and integration with 3PL and carrier APIs (FedEx, UPS, DHL, Royal Mail, Australia Post).
POS Integration & Omnichannel Retail
Connect online and in-store commerce — POS integration (Square, Lightspeed, Shopify POS, EPOS Now), unified customer profile across channels, click-and-collect (BOPIS), in-store return of online orders, shared inventory view, staff lookup tools, loyalty integration at POS, and real-time sales and stock reporting across all retail locations and channels.
Loyalty, Rewards & Subscription Commerce
Customer retention technology — points-based loyalty engine (earn on purchase, redeem at checkout), tier management (Bronze/Silver/Gold), referral programme, subscription commerce (subscribe-and-save, box subscription, replenishment), digital loyalty card, loyalty app (iOS/Android), CRM segments for loyalty communications, and churn prediction to trigger retention offers.
Retail Technology We Work With
Next.js, Shopify, Magento 2, Elasticsearch, Stripe Connect, Klaviyo, Segment, AWS, and the modern commerce integration ecosystem.
How We Work with Retailers
Custom platform build, headless migration, or OMS/integration sprint — structured for your trading calendar and commercial model.
- Retailers outgrowing Shopify/Magento needing a custom platform
- Brands building a D2C channel alongside wholesale/B2B
- Entrepreneurs building a multi-vendor marketplace in a niche
- Retailers needing omnichannel (online + POS + app) unification
- Shopify stores with slow Liquid themes hurting conversion
- Magento 2 stores with poor mobile UX and Core Web Vitals scores
- Retailers wanting content-rich editorial pages alongside product pages
- eCommerce brands prioritising sub-second page load and PWA capability
- Retailers manually managing orders across multiple channels
- eCommerce brands connecting a new 3PL or fulfilment partner
- Retailers adding click-and-collect or in-store return of online orders
- Brands adding Amazon/eBay channel alongside their own store
Retail & eCommerce Clients
Fashion retailers, marketplace founders, and D2C brands on building eCommerce technology with 1Solutions.
1Solutions rebuilt our eCommerce platform as a headless Next.js storefront on top of our Magento 2 backend. Page load time dropped from 6.2s to under 1s, Core Web Vitals went green across the board, and our checkout conversion rate improved by 34% in the first 90 days. Best technical investment we have made in three years of trading.
We hired 1Solutions to build our multi-vendor marketplace from scratch — vendor onboarding, product listing, Stripe Connect payment splitting, vendor dashboards, and a consumer app. MVP launched in 16 weeks. We now have 340 vendors and process $2.8M GMV per month. Their marketplace architecture expertise is genuinely rare.
1Solutions built our D2C subscription platform — subscribe-and-save, box subscription, loyalty programme, and a customer portal. Subscription revenue went from 0 to 28% of total revenue in 8 months. The loyalty app has a 4.8 rating in the App Store. Exceptional retail technology team — they understood our brand and our customers.
Why Retailers Choose 1Solutions
Headless commerce specialists, conversion-rate focus, Stripe Connect marketplace expertise, omnichannel architecture, AI personalisation, and post-launch growth sprints.
150+ Retail & eCommerce Projects
1Solutions has built storefronts, marketplaces, PIM systems, loyalty platforms, OMS tools, and retail analytics for brands and retailers in the UK, US, Australia, and Canada over 15+ years.
Headless Commerce Specialists
Next.js headless storefronts on Shopify, Magento, Commercetools, and custom backends — sub-second page loads, Core Web Vitals 90+, PWA capability, and content-rich editorial experiences alongside product pages.
Conversion Rate Focus
We treat checkout conversion as the primary KPI. Every storefront we build is instrumented, A/B tested, and optimised — average 25–40% checkout conversion improvement in the first 90 days post-launch.
Stripe Connect Marketplace Expertise
Multi-vendor payment splitting, vendor onboarding (KYC), payout management, and dispute handling with Stripe Connect — the correct way to handle marketplace payments, not workarounds.
Omnichannel Retail Architecture
Connecting online, POS, mobile, and marketplace into a unified customer view — shared inventory, customer profiles, loyalty, and order history across every channel a shopper might use.
PIM & Feed Management
Centralised product data with multi-channel publishing to website, Amazon, eBay, Google Shopping, and Meta — automated feed generation, attribute mapping, and retailer-specific formatting for wholesale portals.
AI Personalisation & Recommendation
Product recommendation engines, personalised homepage and category sorting, dynamic pricing, and post-purchase sequences — retail AI that is measurably connected to revenue, not a vanity feature.
Post-Launch Growth Partnership
Launch is the beginning, not the end. We offer sprint-based post-launch growth cycles — A/B testing, personalisation, new channel integrations, and performance monitoring — aligned to your trading calendar.
Build Your eCommerce Platform
Share your retail technology requirements — storefront, marketplace, OMS, or loyalty platform — and we will respond within 24 hours with a proposal, timeline, and team composition.
Technical proposal within 24–48 hours
Headless commerce and marketplace specialists
NDA signed before any technical discussions
150+ retail/eCommerce projects — storefronts, marketplaces, OMS
Conversion-optimised, PCI-DSS compliant, SLA-backed delivery
Tell Us About Your Retail Platform
Retail & eCommerce Software — FAQ
Headless commerce, marketplace platforms, OMS, loyalty, subscriptions, ERP integration, and more.