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Josef Smetanka's avatar

Josef Smetanka

@gnizdo
Kyiv, Ukraine
@gnizdoapp

Social Links

  • gnizdoapp

Articles

Insights from building GNIZDO — practical notes on e-commerce, sync logic, and tooling.

  • Why sellers collapse when they add one more marketplace — and how to survive it
  • Why Manual Inventory Control Stops Working After Your First 100 SKUs

Products

Things I build — small tools, prototypes, and my main project GNIZDO

  • Gnizdo
    pre-launchIn development, 2025 — present

    A simple tool that keeps my WooCommerce, Etsy, eBay, and Shopify stock, prices, and orders in sync. Sync checks across WooCommerce, Etsy, eBay & ShopifyDaily automated discrepancy alerts Prevent oversells & price drift

Recent activity

  • Commented onYour system is “up” but users think it’s broken — a real pattern I keep seeing2026-02-01
  • PostedYour system is “up” but users think it’s broken — a real pattern I keep seeing2026-02-01
  • PostedA pattern I keep seeing in eCommerce systems2026-01-23
  • Commented onValidating via services before building a $27k MRR product2026-01-22
  • Commented onYou don't have a marketing problem, you have a landing page problem2026-01-22
  • Commented onMost Early-Stage Startups Don’t Need Marketing — They Need Feedback2026-01-22
  • Commented onThe Evolution of E-Commerce: How Online Shopping Is Redefining Modern Business2026-01-19
  • Commented onHow Andero Avastu Is Building A SaaS Business While Freelancing2026-01-19
  • Commented onGetting an multi-million-dollar foothold in a crowded market2026-01-19
  • Commented onWhy am I developing Inventory Management Software?2026-01-19
  • Commented on10 Must-Have Features On Every eCommerce Website, Shop & Business Should Have in 2025 - 20262026-01-19
  • Commented onHow Web Scraping Is Used for Extracting Product Data from E-Commerce Websites?2026-01-19
  • Commented on8 Best Practices for Efficient Ecommerce Inventory Management2026-01-19
  • Commented onValidating via services before building a $27k MRR product2026-01-19
  • Commented onMost SaaS Founders React Wrong When Sales won't increase, Here’s What Works2026-01-19

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