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Mario Colic

Professional Work

Releasit Bundles & Upsells logo

Releasit Bundles & Upsells

Lead Project Developer

Built for Shopify

Product bundling app with quantity offers, related product upsells, cross-sells, and custom discount strategies to increase AOV. As Lead Project Developer I led the design, architecture, and build from scratch as part of the Releasit team at Shop Circle — with analytics, A/B testing, and highest-level Shopify compliancy.

Bundling is one of the cheapest ways to raise average order value, but on Shopify it usually means choosing between a rigid native discount and an app that fights the theme. This one covers quantity breaks, related-product upsells and cross-sells with custom discount strategies, and puts analytics and A/B testing next to them so a merchant can tell which offers actually earn their place.

I owned it end to end — the design, the architecture and the build. Remix and React in TypeScript for the app, Prisma over PostgreSQL with Redis and Node.js services behind it, hosted on Hetzner. Shopify data flows over GraphQL, and the storefront side renders through Liquid.

Highlights

  • Designed, architected and shipped solo in under 6 weeks
  • Part of Releasit — 150k+ active merchants across the app suite
  • Meets Shopify's highest-level Built for Shopify requirements

Built with

Languages
TypeScript
Frontend
RemixReact
Backend / Database
RemixNode.jsPrismaPostgreSQLRedis
API
GraphQL
Shopify
ShopifyLiquid
Also used
Hetzner

Related work

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