High-Converting E-commerce Stores & Marketplaces
From a first Shopify store to a headless, multi-region marketplace — we build commerce experiences that load fast, rank well and turn browsers into buyers.
At a Glance
- Engagement
- Fixed-price or dedicated team
- First response
- Within 1 business day
- Scoped quote
- Within 48 hours
- Ownership
- Full source & IP transferred
Core Stack
E-commerce Development Services
Shopify & Shopify Plus
Custom themes, apps and checkout extensions for DTC brands scaling from launch to high volume.
Magento & Adobe Commerce
Enterprise catalogs, B2B pricing and complex fulfillment on Magento with performance tuning.
Headless Commerce
Next.js storefronts on a commerce API (Shopify, commercetools, Medusa) for speed and design freedom.
Marketplace Platforms
Multi-vendor marketplaces with seller onboarding, payouts, ratings and dispute workflows.
AI Merchandising
Personalized recommendations, semantic search and dynamic pricing that lift average order value.
Payments & Fulfillment
Gateway integration, tax, shipping, OMS and ERP connections for a clean order-to-delivery flow.
The KeasBrain Difference
- Conversion-first — Every build is tuned for funnel metrics — speed, checkout friction and AOV, not just looks.
- Core Web Vitals — Sub-2s storefronts that rank and convert, even on big catalogs.
- Scales with you — Architecture that handles flash sales and catalog growth without re-platforming.
- Own your stack — No lock-in — clean code and full admin access handed over.
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Years of Experience
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Projects Delivered
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Happy Clients
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Client Satisfaction
A Clear Path From Idea to Impact
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1
Discover
Free consultation + scope audit
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2
Design
Architecture & UX validated upfront
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3
Build
Agile sprints with weekly demos
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4
Scale
Launch, monitor & optimize
Tools & Platforms We Use
E-commerce Development Questions
Shopify for speed-to-market and lower maintenance; headless when you need a bespoke storefront, multi-channel content or maximum performance. We recommend based on your catalog size, team and roadmap.
Yes — we map and 301-redirect every URL, preserve metadata and structured data, and monitor rankings through the cutover.
Yes — personalized product recommendations, semantic search and dynamic pricing are common add-ons that reliably lift AOV and conversion.
A focused Shopify store ships in 4–7 weeks; a headless or marketplace build 2–4 months. You get a sprint plan with weekly demos.