
Sponzee Connects Brands and Creators in a Social Commerce Revolution
- 16 weeks
- From idea to launch
- 25%
- Boost in brand sales
Custom ecommerce software for online retailers, subscription businesses, B2B sellers, and marketplace operators who need a platform built around their specific catalogue, checkout, and fulfilment model, not a Shopify theme or a SaaS plan that covers 80% of the requirement.
When your product configuration, bundle logic, B2B pricing rules, subscription mechanics, or multi-vendor marketplace requirements can't be modelled without significant compromise on a standard platform, we build the system that fits the business rather than the other way around.
Custom ecommerce platforms with product catalogue, checkout, order management, and fulfilment workflows built for your specific inventory model
Multi-vendor marketplace development with seller onboarding, commission management, and payout automation
Headless commerce architecture decoupling your storefront from your backend so content teams and developers work independently
AI personalisation and recommendation engines that increase average order value and repeat purchase rate from your existing traffic
What you can count on
Retention
3+ years
Average client relationship across active accounts
First milestone
Week 1
A straight read on what to keep and what to rebuild
Pricing
Fixed price
Scope and cost agreed before work starts
Team
No handoffs
The senior engineers who scope the build also ship it
The problem
forcing complex product configurations, bundle rules, or B2B tiered pricing into a SaaS ecommerce platform that wasn't designed for them, and paying developers to maintain workarounds every time the platform updates?
running separate tools for product catalogue, inventory, subscription billing, and fulfilment that share no data and require manual reconciliation between every order?
Short answer
RaftLabs is a custom ecommerce software development company building platforms, multi-vendor marketplaces, headless storefronts, subscription commerce, AI personalisation, and B2B ordering portals for online retailers and B2B sellers. A custom ecommerce platform typically runs $40,000 to $90,000, and most teams launch a validated v1 in about 10 to 16 weeks, then iterate at a fixed, agreed cost.
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Shopify, WooCommerce, and Magento cover standard ecommerce well. They handle product listings, a standard checkout, basic promotions, and a handful of payment gateways. The ceiling appears when the business model requires something the platform wasn't designed to support. Complex product configurations with dozens of interdependent attributes, B2B pricing tiers per account, multi-vendor marketplace logic with seller-specific fulfilment and split payouts, subscription mechanics with custom box curation, or a catalogue size that pushes the platform's performance and API rate limits. At that point, the choice is maintaining expensive developer workarounds that break on every platform update, or building a system designed for the actual business model from the start.
We build ecommerce software for businesses at this decision point, and for those that have already reached it after launching on a standard platform. We've built custom ecommerce platforms, multi-vendor marketplaces, headless commerce frontends, subscription commerce systems, and B2B ordering portals. We understand the operational requirements specific to ecommerce: catalogue attribute flexibility, checkout conversion, inventory accuracy across locations, payment processing reliability, PCI-DSS scope for how card data is captured and stored, and the integration landscape between the ecommerce platform, warehouse management, ERP, and 3PL systems. These are designed into the system from the start, not retrofitted later.
Product catalogue complexity forcing custom development work every time a new attribute or variant type is added
SaaS ecommerce platforms define a fixed catalogue structure with a standard set of product attributes and variant types. When the product range includes items with attributes that don't fit the standard structure (configurable dimensions, interdependent options, custom engraving fields, or industry-specific classification data), every new product type requires developer involvement to work around the platform's data model. Every workaround adds fragility and slows down the merchandising team. A custom catalogue built around the actual product range removes that constraint, so product teams can add new types without waiting on developers.
Cart abandonment rising because the checkout wasn't built for your buyer type
Standard checkout flows are designed for a single buyer purchasing a standard product with a standard delivery address and a standard payment method. When your actual customers are B2B buyers on account terms, subscription customers managing recurring orders, or buyers configuring complex products with multiple options, the standard checkout creates friction at the point of purchase. According to the Baymard Institute (2024), the average online shopping cart abandonment rate is 70.19% across 49 independent studies, meaning roughly 7 in 10 shoppers who add to cart never complete the purchase. Every extra step or mismatched assumption is a lost order. A checkout built for the actual buyer type and order model cuts abandonment at precisely the point where standard platforms let revenue slip through.
Inventory and order data split across the ecommerce platform, warehouse system, and ERP with no single source of truth
When an order placed on the ecommerce platform has to be manually entered into the warehouse management system, and the fulfilment status has to be manually synced back to the platform, and financial data has to be reconciled against the ERP at month end, the process is slow, error-prone, and produces a different version of the truth in each system. Oversells, mis-ships, and delayed fulfilment follow. An integrated order management layer that connects the ecommerce platform, warehouse system, and ERP gives every team a single accurate view of stock, orders, and fulfilment status in real time.
B2B customers ordering by phone or email because the ecommerce platform can't handle account pricing and approval workflows
When B2B customers have negotiated pricing, credit terms, minimum order quantities, and multi-user approval workflows, and the ecommerce platform can't configure any of these per account, the sales team handles every B2B order manually by phone or email. That's a hidden cost that scales with revenue. A B2B ecommerce portal with account-specific pricing, purchase order terms, and buyer approval workflows moves the ordering process online without losing the account-level commercial relationship.
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Shopify and WooCommerce handle standard ecommerce well and are the right choice for most businesses launching a direct-to-consumer store with a standard product range. Custom software becomes the right choice when the product catalogue requires attribute types and variant logic the platform can't model, when B2B pricing tiers and account terms can't be configured per customer, when the business is building a multi-vendor marketplace with seller-specific fulfilment and commission structures, when subscription mechanics require box customisation the platform can't support, or when the ecommerce platform's API rate limits and performance characteristics are constraining catalogue size or integration architecture. The decision usually comes at a specific complexity or volume threshold rather than at the start.
Yes. Multi-vendor marketplace development is one of our core ecommerce capabilities. We build the seller onboarding and verification workflow, the per-seller product catalogue and inventory management, the order routing logic that sends each order to the correct seller, and the split payment and payout automation that distributes buyer payments to sellers after commission deduction. We also build the operator admin layer for managing sellers, categories, commission structures, and disputes. The architecture is designed so sellers operate independently, listing their own products, managing their own inventory, and fulfilling their own orders, while the marketplace operator has a single view of the entire operation.
Headless commerce decouples the storefront presentation layer from the commerce backend. The frontend is a custom application, typically built in Next.js, that fetches product, cart, and checkout data from an API rather than rendering pages through Shopify's or another platform's templating system. The result is a storefront with full control over performance optimisation, page structure, and content management, which typically produces significantly better Core Web Vitals scores than a theme-based storefront. The cost premium over a Shopify theme depends on the scope. A headless frontend on top of an existing Shopify backend typically runs $25,000 to $60,000 depending on the number of page types and content management requirements. A full custom headless platform (backend and frontend) sits in the $40,000 to $90,000 range.
A B2B ecommerce portal with account pricing, quote workflow, and ERP integration typically runs $35,000 to $75,000. A custom ecommerce platform covering catalogue, checkout, order management, and fulfilment integration runs $40,000 to $90,000. A multi-vendor marketplace with seller onboarding, commission management, and payout automation runs $60,000 to $120,000. A full ecommerce platform with AI personalisation, recommendation engine, and subscription commerce runs $100,000 to $200,000 depending on catalogue size, integration complexity, and the depth of the personalisation layer. Fixed cost is agreed before development starts.
Card data is the highest-risk asset in any ecommerce build. We keep cardholder data out of your own systems by tokenising through PCI-DSS compliant processors like Stripe, Adyen, or Braintree, so your platform stores order and customer data while the processor holds the card. That keeps most builds in the lighter SAQ-A compliance scope rather than full audit territory. On payment products where the platform touches card flows directly, we have delivered systems that passed a PCI DSS audit. The exact scope is agreed during discovery based on how you take payment.
What we build for ecommerce
Custom Software Development
Custom ecommerce platforms, marketplace systems, and checkout experiences built for your exact catalogue and revenue model.
AI Development
Personalised recommendations, dynamic pricing, and demand forecasting on your own catalogue and customer data.
Business Process Automation
Automate order processing, inventory replenishment, returns workflows, and supplier communications.
Loyalty Program Development
Points-based and cashback loyalty programs integrated with your ecommerce platform.
Tell us your current platform, the catalogue and checkout requirements it can't handle, and the revenue model you're building toward. We'll tell you what we'd build and how.
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