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SYS–01Case studyCo-founderIn production

The Mad Space

A bilingual print-on-demand marketplace: creators submit their work, it becomes apparel, and every sale pays them a commission — payment, production and tracking fully automated.

Type
Cofounded product · marketplace (CTO)
Domain
E-commerce · print-on-demand
Status
In production
Period
Product launched 2024 · CTO since 2025
Role
CTO · Architecture, development & integrations
Team
Founder (product & brand) · Ralph (CTO · engineering)
Market
Creators & buyers · Canada + international (4 currencies)
Platforms
Web (bilingual FR/EN)
Next.js 16TypeScriptPostgreSQL · PrismaStripeGelato (POD)SupabaseResendVercel
themadspace.com Updated : 2026-07-29

01 Summary

The Mad Space turns creators' artwork into print-on-demand apparel and pays a commission on every sale. I'm CTO: I own the architecture, development and integrations (Stripe payments, Gelato production, emails, tracking). The product is in production, bilingual and multi-currency.

02 The product

A marketplace where creators offer designs that become print-on-demand products. Buyers order, creators earn a commission, and both production and shipping are automated end to end.

03 My role (CTO)

I own all of the engineering: architecture, application development, payment and production integrations, security and reliability. The founder owns product, brand and creator relations.

  • Custom Next.js architecture (32 pages · 37 API route modules)
  • Stripe (payments) and Gelato (production/shipping) integrations
  • Data model, commissions and order tracking
  • Deployment, transactional email and operations

04 Reach

Built for a broad audience from day one.

  • Bilingual FR/EN
  • 4 currencies (CAD · USD · EUR · GBP)
  • Canada + international shipping
  • Built-in blog / content for acquisition

05 State & results

In production. The metrics below describe the scope of what is built and deployed — not sales figures.

32Implemented
application pages
37Implemented
API route modules
12Implemented
data models (Prisma)
4Implemented
currencies (CAD · USD · EUR · GBP)
2Implemented
languages (FR / EN)
LiveDeployed
in production · Vercel

06 Takeaways

Leading the engineering of a real commercial product: balancing shipping fast with building solid, taking real money reliably, and keeping a codebase you can evolve without breaking it.