E-commerce Development
Custom ecommerce development for businesses that have outgrown the limitations of Shopify or PrestaShop. Complex integrations, B2B business logic, and performance under pressure.
E-commerce that Solves Real Business Problems
Does your online store need to do things that standard platforms don't allow?
Different pricing for each customer. Customized catalogs for each buyer type. Real-time inventory synchronized with your ERP. Discount rules based on purchase history, volume, or commercial agreements. If your business operates like this, standard e-commerce solutions fall short.
We specialize in custom e-commerce development for companies with complex operations. B2B businesses where each customer sees different prices. Distributors with multi-channel inventory that must balance down to the last cent. Companies with pricing structures that no standard platform can accommodate. The e-commerce design and development we do isn't for those who want a simple store: it's for those who need their sales platform to function exactly as their business requires.
From Analysis to First Order
Our online store development process begins with understanding your operations, not choosing a template. Every technical decision is based on a real business requirement.
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Commercial Operations Analysis
We map your sales flows, pricing logic, inventory management, and fulfillment processes. We identify what your e-commerce needs to fit seamlessly with your current operations.
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Shopping Experience Design
Conversion-focused (CRO) ecommerce design : optimized purchase flows, product pages that sell, frictionless checkouts. We differentiate B2B and B2C experiences when necessary.
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Architecture and Integrations
We define the ERP/CRM integration from the ground up. Bidirectional connection with your management system: orders, stock, customers, pricing. No manual work, no discrepancies.
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Iterative Development
We build your online store in two-week sprints. Each iteration is functional and testable. You see real progress, not presentations.
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Payment and Logistics Setup
We implement the payment gateways you need: card, bank transfer, financing, deferred payment for B2B . Integration with logistics operators and shipping cost calculation.
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Launch and Optimization
We deploy with load testing to ensure stability during traffic peaks . We monitor conversion metrics and optimize post-launch.
Why Mecexis for your E-commerce Development
Specialists in complex ecommerce where others struggle
Anyone can develop a simple online store . We handle projects that others reject or quote three times as much.
Our competitive advantage lies in custom integrations . We've connected sales platforms with ERPs that lack documented APIs. We've synchronized multichannel inventory across warehouses, physical stores, and marketplaces. We've implemented B2B pricing logic with dozens of price levels, rebates, and customer-specific commercial terms.
The custom e-commerce platform we develop can handle traffic spikes because we build it with scalability in mind. We don't use solutions that work with ten users but crash with a thousand. We develop on Django, the same framework used by platforms with millions of daily transactions, and deploy on infrastructure ready to handle campaigns, Black Friday sales, or large-scale sales launches.
Ecommerce design isn't just about aesthetics: it's about creating a shopping experience that converts. Every element is designed to reduce cart abandonment, increase average order value, and encourage repeat purchases. We measure, analyze, and improve.
Frequently Asked Questions
Answers to the most common questions about custom e-commerce design and development .
Everything You Need to Know Before You Start
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1
When do I need a custom ecommerce platform instead of Shopify or PrestaShop?
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When your business has features that standard platforms don't support—customized pricing per customer, real-time bidirectional ERP/CRM integration , B2B catalogs with complex terms and conditions, or industry-specific purchasing flows—and you've tried adapting a standard platform and encountered constant limitations, you need custom ecommerce development .
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2
How much does it cost to develop a custom online store?
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Custom e-commerce development starts at €30,000 for projects with basic integrations. Platforms with complex ERP/CRM integration , advanced B2B logic, and multi-channel inventory management typically range from €50,000 to €120,000. We'll provide you with a fixed-price quote after analyzing your operations.
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3
Can you integrate my ERP even if it's old or uncommon?
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Yes. We specialize in custom integrations . If your ERP has an API, we'll connect. If it doesn't but allows data export, we'll develop connectors. We've integrated with all kinds of management systems, from the largest to industry-specific ERPs that are decades old.
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4
How do you manage multichannel stock?
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We implement real-time , multi-channel stock synchronization: your e-commerce platform , physical stores, marketplaces, and warehouses share the same information. Every sale automatically updates inventory across all channels, preventing overselling and discrepancies.
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5
Will the store be able to handle traffic spikes during campaigns?
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Yes. The online store development we do is designed to handle traffic spikes . We perform load testing before launch and deploy on infrastructure that automatically scales. Your e-commerce site will be able to handle Black Friday, TV campaigns, or massive sales events.
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6
Do you offer post-launch maintenance?
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Yes. Custom e-commerce requires ongoing maintenance: security updates, conversion optimization, new features, and adjustments to integrations when your ERP system changes. We offer maintenance contracts tailored to each project.
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7
Can you migrate my current store to a custom solution?
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Yes. We migrate catalogs, customer history, orders, and settings. We plan the migration to minimize downtime and ensure the shopping experience is not affected during the transition.