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Mario Colic

Professional Work

Releasit COD Form & Upsells logo

Releasit COD Form & Upsells

Full Stack Developer

Built for Shopify

1-Click Cash on Delivery order form with pre/post-purchase upsells, downsells, and quantity offers to boost conversion and AOV. Features OTP phone verification, A/B testing, multi-currency support, and event tracking across Facebook, TikTok, Google, Pinterest & Snapchat. Built as part of the Releasit team at Shop Circle.

Cash on delivery is how a large share of orders get paid for across the Middle East, North Africa, South Asia and Latin America — and Shopify's native checkout assumes a card. The app replaces that step with a single-page order form the merchant designs themselves: fields, layout, offers and copy, so a buyer can place an order in one click without ever reaching checkout.

It runs as an embedded Shopify admin built in Remix and styled with Tailwind, using Polaris and App Bridge for the in-admin experience, while the buyer-facing form reaches the storefront through Liquid. Shopify data moves over both the GraphQL and REST Admin APIs, orders and configuration live in DynamoDB, and the service runs on AWS in Docker with CloudWatch for logs and alerting. Business logic is covered by Vitest.

Highlights

  • Part of Releasit — 150k+ active merchants across the app suite
  • Built for Shopify — Shopify's highest app quality tier

Built with

Languages
TypeScript
Frontend
RemixReact
Backend / Database
RemixNode.jsDynamoDB
API
GraphQLREST
Styling
Tailwind CSS
Shopify
Shopify APIApp BridgePolarisLiquid
Cloud / Infra
AWSDocker
Monitoring
CloudWatch
Testing
Vitest

Related work

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