Kirill Platonov
Kirill Platonov
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Hey! I'm Kirill Platonov, a software developer and solo founder based in Barcelona 🇪🇸. I build modern Shopify Apps and maintain open source projects in the Ruby on Rails & Shopify space.

Platmart Swatches

Platmart Swatches

Metafields-based color swatches with automations. The best alternative for Combined Listings.

 Platmart Price Editor

Platmart Price Editor

Reliable bulk price editor that works with Shopify Markets. Supports bulk editing, scheduling sales, and more.

Posts

All posts
Jun 20, 2025

The comparison trap of social media

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Open Source

All projects

Polaris ViewComponents

ViewComponents for Polaris Design System.

Hotwire::Livereload

Automatically reload Turbo on views changes.

Shopify Graphql

Less painful way to use Shopify Graphql API in Ruby.

Shopify Hotwire Sample

A sample of the next-gen SSR Shopify app.

Client Work

Portfolio
forsbergplustwo

FORSBERG+two

Legendary Shopify app development studio from Copenhagen. I was helping Bjorn with building new app and developing AppKit - the framework for Shopify apps with Ruby on Rails and Hotwire.
cooksmarts

Cook Smarts

Lifesaving meal planning service from California. I revived their old Ruby on Rails monolith, made a full redesign and implemented a huge list of long waited features. A lot of work and a lot of happy customers!
busfor

Busfor

The largest bus ticket selling platform in Eastern Europe acquired by BlaBlaCar. As a team leader and later CTO I participated in Ruby on Rails monolith development and built a mobile app with React-Native.