ecommerce

B2B eCommerce Development

B2B ecommerce development by EltexSoft. Multi-vendor marketplaces, custom storefronts. Nautical Commerce ($30M), Greek House (Inc. 5000). $50-99/hr.

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EltexSoft is a B2B ecommerce development company based in Lisbon with senior engineers in Ukraine. 11 years in business. We build multi-vendor marketplaces, B2B storefronts, and AI-enabled commerce platforms. Clients include Nautical Commerce ($30M Series A, 200K+ monthly transactions), Greek House (Inc. 5000, custom apparel for Greek life), and Woodies Clothing (AI-enabled fashion ecommerce). $50-99/hr.

What we ship

The Work

B2B eCommerce Is Not B2C with a Login

B2C ecommerce is a solved design problem. Add to cart, enter card, receive package. B2B ecommerce is an engineering problem: custom pricing per customer tier, quote-to-order workflows with approval chains, net-30/60/90 payment terms, multi-location shipping with different tax jurisdictions, ERP integration that must reconcile in real time, and catalog permissions where some buyers see products others do not.

The companies that try to force B2B purchasing into a B2C template (Shopify theme, WooCommerce plugin, off-the-shelf marketplace) hit the wall within 12 months. The pricing logic alone exceeds what templates support.

EltexSoft is a B2B ecommerce development company. 35-50 senior engineers. Headquartered in Lisbon, Portugal. Engineering team in Ukraine. Founded in 2015. We build multi-vendor marketplaces, B2B storefronts, and AI-enabled commerce platforms.

Our ecommerce clients include Nautical Commerce ($30M Series A, 200K+ monthly transactions), Greek House (Inc. 5000, custom apparel for Greek life), and Woodies Clothing (AI-enabled fashion ecommerce).

What We Built

Nautical Commerce: Multi-Vendor Marketplace, $30M Series A

Nautical Commerce is a multi-vendor marketplace platform backed by a $30M Series A led by Drive Capital. The platform enables operators to launch marketplaces that process 200K+ monthly transactions, with new marketplace deployments achieved in 90 days.

Multi-vendor marketplaces are the hardest ecommerce architecture to get right. Each vendor has its own catalog, pricing, fulfillment process, and payout schedule. The platform must manage vendor onboarding, product normalization across vendors, order routing (which vendor fulfills which line item), commission calculation, multi-party payment splitting, return and refund routing back to the correct vendor, and consolidated reporting for the marketplace operator.

Greek House: Custom Apparel, Inc. 5000

Greek House is a custom apparel ecommerce platform serving fraternities and sororities. They made the Inc. 5000 list for fastest-growing private companies in the US, which means the engineering scaled with the business.

The platform handles product configuration (design customization, size selection, color variants), group ordering (one organizer places an order on behalf of 50-200 members, each selecting their own size and style), bulk discount logic, production coordination with print and embroidery fulfillment partners, and delivery tracking.

What makes this different from standard ecommerce: the group ordering model. A single “order” is actually a collection of individual selections aggregated into one production run. The system must track individual member selections within the group, enforce ordering deadlines, calculate group-rate pricing that changes with volume, coordinate with fulfillment partners on production timelines, and handle the inevitable late additions and changes.

Woodies Clothing: AI-Enabled Fashion eCommerce

Woodies is a fashion ecommerce brand where we built AI-powered features: product recommendations based on purchase patterns and browsing behavior, customer segmentation for targeted campaigns, and inventory demand forecasting. These are not experiments. They are production features that affect conversion rate, return rate, and stock efficiency.

What We Build for eCommerce

Multi-vendor marketplaces. Vendor management, product catalog normalization, commission engines, multi-party payments (Stripe Connect), order routing and fulfillment tracking, return management, and marketplace analytics.

B2B buyer portals. Customer-specific pricing, bulk ordering, quote-request workflows, approval chains, account management, credit terms, ERP integration (SAP, NetSuite, custom), and procurement automation.

Headless commerce. API-first architecture with React/Next.js or Vue/Nuxt.js frontends. Backend on Laravel, Medusa, Saleor, or custom. Omnichannel support (web, mobile, in-store POS, wholesale portal) from a single commerce engine.

Product configurators. Custom design tools, made-to-order workflows, print-on-demand integration, variant management, real-time pricing based on options selected, and production order generation.

AI commerce features. Recommendations, dynamic pricing, visual search, size prediction, demand forecasting, and customer segmentation. Built on production-grade infrastructure, not demo APIs.

What It Costs

Senior ecommerce engineer (dedicated): $50-99/hr.

By project type:

B2B storefront MVP: $40K-$90K, 3-5 months.

Multi-vendor marketplace: $100K-$250K, 5-9 months.

Product configurator (made-to-order): $50K-$120K, 3-6 months.

Headless commerce platform with mobile: $120K-$300K, 6-10 months.

AI feature integration (recommendations, forecasting): $20K-$60K, 2-4 months.

Annual maintenance: 15-20% of build cost.

Who We Are

EltexSoft is a boutique B2B ecommerce development company. 35-50 senior engineers. Headquartered in Lisbon, Portugal. Engineering team in Ukraine. Founded in 2015.

Our ecommerce clients include Nautical Commerce, Greek House, and Woodies Clothing. We also build with Laravel, React, Vue, Django, iOS, and Android.

5.0 Clutch rating across 30+ verified reviews. 200+ five-star Upwork reviews. Top Rated Plus and Expert-Vetted agency status (top 1%). Average client engagement: 3+ years.

30-minute technical call. Bring your marketplace architecture challenge, your B2B pricing complexity, or your ecommerce product idea. We’ll tell you what we’d build and what we wouldn’t.

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FAQ

Common questions

What does a B2B ecommerce development company build?
Multi-vendor marketplaces, B2B buyer portals, wholesale ordering systems, procurement platforms, product configurators, and headless commerce storefronts. B2B ecommerce differs from B2C in pricing complexity, approval workflows, payment terms, and ERP integration requirements.
What did you build for Nautical Commerce?
Nautical Commerce is a multi-vendor marketplace platform that raised a $30M Series A led by Drive Capital. The platform processes 200K+ monthly transactions with a 90-day launch timeline for new marketplace operators. We contributed engineering to their marketplace infrastructure.
What is Greek House and why is it on the Inc. 5000?
Greek House is a custom apparel ecommerce platform serving Greek life organizations (fraternities and sororities). They made the Inc. 5000 list for fastest-growing private companies. The platform handles group ordering, design customization, bulk pricing, and fulfillment coordination for custom-branded apparel.
How do you add AI to ecommerce?
Product recommendations based on purchase history and browsing behavior, dynamic pricing that adjusts to demand and competitor pricing, visual product search, size prediction to reduce returns, inventory demand forecasting, and customer segmentation for targeted marketing. We built AI features for Woodies Clothing.
What tech stack do you use for B2B ecommerce?
Headless architecture: React or Next.js frontend, Laravel or Node.js backend, PostgreSQL database, Elasticsearch for product search, Redis for session and cart caching, Stripe Connect for payments. We also integrate with Shopify (Storefront API), Medusa, and Saleor when the project calls for it. ERP integration with SAP, NetSuite, or custom systems.
How much does B2B ecommerce development cost?
A B2B storefront MVP costs $40K-$90K. A multi-vendor marketplace runs $100K-$250K. A product configurator for made-to-order (like Greek House's apparel customization) costs $50K-$120K. A full headless commerce platform with mobile apps costs $120K-$300K. EltexSoft charges $50-99/hr.
Can you handle marketplace payment splitting?
Yes. Stripe Connect is our standard for marketplace payments. Platform commission, vendor payouts, refund logic, and tax calculation all handled. For B2B with net payment terms, we integrate invoicing and accounts receivable workflows.
What is headless commerce and when should I use it?
Headless commerce separates the frontend (what buyers see) from the backend (product catalog, pricing, inventory, orders). Use it when you need a custom buyer experience that Shopify or WooCommerce templates cannot deliver, when you sell across multiple channels (web, mobile, in-store), or when your B2B pricing logic is too complex for off-the-shelf platforms.
How long does a B2B ecommerce project take?
A B2B storefront MVP takes 3-5 months. A multi-vendor marketplace takes 5-9 months. A product configurator takes 3-6 months. Adding AI features (recommendations, forecasting) to an existing platform takes 2-4 months.
Who owns the code?
You do. Full work-for-hire assignment. Source code, infrastructure, documentation, and deployment configurations belong to you from day one.

Tell us what you're building.

One business day reply. From an engineer, not a sales rep.

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