How River takes security work from a fix to merge (2026) - Shopify
River, Shopify’s AI agent in Slack, enables autonomous vulnerability remediation, not just detection.
Gisting: Compressing LLM Agent context to ↑ throughput and ↓ cost (2026) - Shopify
Gisting compresses context into a set of learned tokens, preserving its quality while making the model faster and cheaper.
How we raised mobile end-to-end test stability to 98% (2026) - Shopify
We rebuilt our mobile end-to-end testing framework with a strict API and computer vision, raising test stability drastically.
Sidekick's continual learning loop (2026) - Shopify
How we compress production failures into model weights every day, beat frontier-model quality, and cut serving costs 96%.
Building an agentic harness that outlasts the model (2026) - Shopify
We built an agentic code review and test oracle harness that discovers vulnerabilities, proves them with real tests, and provides Shopify-tuned fixes.
Upgrading Checkout Blocks app to Polaris web components (2026) - Shopify
We moved five high-traffic checkout extensions to remote-dom and Polaris web components, cutting bundle sizes drastically and making checkout faster.
Inside Shopify Hack Days: Building a prototype for music-playing pages (2026) - Shopify
Hack Days are a core part of Shopify’s experimentation culture. Here’s one project that made product pages sing.
Clustering billions of products for agentic commerce with Catalog API (2026) - Shopify
How Shopify built an LLM-powered pipeline to match product listings across millions of merchants into a unified catalog that AI agents can search.
Teaching Sidekick to say no: automated data curation with LLM judge consensus (2026) - Shopify
Our Sidekick team used LLM judges to automatically curate training data and teach domain-specific models how to refuse impossible queries.
Quick: An internal hosting platform for the AI era (2026) - Shopify
Quick lets anyone at Shopify ship a site in seconds. It has changed the culture of how we build and share.
Under the River (2026) - Shopify
What it took to ship our Slack-native agent River, lessons learned, and the substrate that runs beneath it. Co-authored by River.
We replaced Redis with MySQL for inventory reservations—and it scaled (2026) - Shopify
How we used SKIP LOCKED, composite primary keys, and connection visibility to hit our scale targets.
Flow generation through natural language: An agentic modeling approach (2026) - Shopify
We fine-tuned Qwen3-32B into a tool-calling agent that generates Flow automations: 2.2x faster, 68% cheaper, with a weekly retraining flywheel.
Autoresearch isn’t just for training models (2026) - Shopify
How we cut our CI pipeline build time by 65% and open-sourced the project.
Building a Magic Mirror: AI retail experiences with Remix (2026) - Shopify
How we built a configurable in-store AI experience that any merchant can adapt to their brand.
Shopify’s journey to faster breadth-first GraphQL execution (2026) - Shopify
We questioned why conventional GraphQL execution incurs hidden costs, and rewrote it in a faster breadth-first manner to avoid them.
2,000 robots walk into a shop: Simulated A/B testing (2026) - Shopify
No traffic? No problem. SimGym sends hundreds of AI shoppers through your store to simulate A/B tests. A Shopify and NVIDIA collaboration.
The generative recommender behind Shopify's commerce engine (2026) - Shopify
From raw event sequences to real-time predictions: what it took to build and ship a generative recommender at commerce scale.
SkyPilot at Shopify: Multi-cloud GPUs without the pain (2026) - Shopify
GPUs are annoying. Shopify uses SkyPilot to make them less so: one YAML file, multiple clouds, clean development ergonomics.
Building the Universal Commerce Protocol (2026) - Shopify
Under the hood of UCP: the open protocol powering agentic commerce, enabling AI agents to discover, negotiate, and transact with any merchant.
Tangle: An open-source ML experimentation platform built for scale (2025) - Shopify
Tangle saves months of compute time, makes every experiment automatically reproducible, and allows teammates to share computation without coordination.
Behind the build: 2025's BFCM globe in a pinball machine 🌎🕹️ - Shopify
Our interactive, real-time visualization of sales made by Shopify-powered merchants worldwide—built into a pinball game.
Run for your money: Engineering a treadmill that prints store credit (2025) - Shopify
We combined FTMS sensors, Socket.IO, and POS UI extensions to turn a manual treadmill into a discount-printing machine.
How we prepare Shopify for BFCM (2025) - Shopify
Nine months of chaos engineering and scale tests so intense we ran them (mostly) at night. Inside our 2025 readiness program for Black Friday weekend.
Building world-class product search at Shopify: Where C++ excellence meets ML innovation (2025) - Shopify
Learn how we solved a major search engineering dilemma—running machine learning models at native C++ speed.
How AI Agents are Evolving Shopify's Product Taxonomy at Scale (2025) - Shopify
Our prior work used Vision Language Models for automatic product classification. This post delves into how AI agents are evolving the taxonomy itself.
Migrating to React Native's New Architecture (2025) - Shopify
Shopify successfully migrated two of its largest apps, Shopify Mobile and Shopify Point of Sale (POS) to React Native's New Architecture while maintaining weekly releases and serving millions of merchants. This migration involved a complex codebase with hundreds of screens and native modules, extensive custom components, and deep integration with first-party libraries like FlashList.
Building production-ready agentic systems: Lessons from Shopify Sidekick (2025) - Shopify
Learn how we evolved our AI assistant architecture and built robust evaluation frameworks for real-world deployment
MCP UI: Breaking the text wall with interactive components (2025) - Shopify
MCP UI extends the Model Context Protocol to enable AI agents to return fully interactive UI components. It solves the critical challenge that commerce experiences require visual and interactive elements like product selectors, image galleries, and cart flows. This open-source protocol allows agents to embed commerce components while maintaining control through an intent-based messaging system, de
FlashList v2: A ground-up rewrite for React Native's New Architecture (2025) - Shopify
FlashList v2 is a complete rewrite, delivering faster load times, improved scrolling performance, and precise rendering without requiring item size estimates. It powers thousands of lists in the Shopify mobile app and is now production-ready.
Leveraging multimodal LLMs for Shopify’s global catalogue: Recap of expo talk at ICLR 2025 - Shopify
Shopify’s Global Catalogue demonstrates the impact of multimodal LLMs on one of commerce’s hardest problems: building a unified, structured, and continuously evolving understanding of billions of product listings created by millions of merchants. At the International Conference on Learning Representations (ICLR) 2025 Expo in Singapore, we presented the core engineering behind this initiative
Augmented commerce: Machine learning at Shopify (2025) - Shopify
Discover how Shopify uses machine learning, data, and advanced tools to help merchants succeed in the ever-changing game of commerce.
Remixing Shopify's Admin: How We Made It 30% Faster and AI-Ready (2025) - Shopify
Learn how we just made Shopify's Admin 30% faster while setting it up for AI superpowers. Behind the scenes, we completely transformed how admin.shopify.com works—rebuilding a system that powers 67 million daily page views and merchants live inside to run their business.
The Future of React Native Graphics: WebGPU, Skia, and Beyond (2025) - Shopify
In the last three years, React Native Skia has established itself as the go-to solution for 2D graphics on React Native. And we are seeing many users pushing the boundaries of what can be done with the library.
Introducing Roast: Structured AI workflows made easy (2025) - Shopify
Roast is a convention-oriented workflow orchestration framework designed specifically for creating structured AI workflows that interleave AI prompting with normal non-AI execution. It provides a declarative approach primarily using YAML configuration and markdown prompts, giving AI agents the guardrails they need to solve developer productivity problems at scale.
Introducing the commerce payments protocol (2025) - Shopify
Learn how we partnered with Coinbase to bring payments onchain at scale with a new smart contract protocol to meet the complex requirements of commerce.
Resilient Import Maps - Better Theme Development and Beyond (2025) - Shopify
Import maps are great for both performance and developer experience, but their original limitations made them hard to use, especially at Shopify’s scale. We stepped up and pushed changes across the HTML spec, Chromium and WebKit to fix these issues at the web platform level. Now, developers can interleave JavaScript modules and multiple import maps on their HTML pages without worrying about correc
Evolution of Product Classification at Shopify: From Categories to Comprehensive Product Understanding (2025) - Shopify
Shopify’s product classification system has evolved from basic categorization to an AI-driven framework using Vision Language Models and the Shopify Product Taxonomy. It accurately classifies products, extracts attributes, and processes over 30 million predictions daily, improving search, discovery, trust, and efficiency.
Mobile Bridge: Making WebViews Feel Native (2025) - Shopify
We built a framework that transforms WebViews in the Shopify app to feel native and solve performance and integration challenges without rebuilding for mobile.
Five years of React Native at Shopify (2025) - Shopify
Five years ago, we announced that React Native (RN) is the future of mobile at Shopify. Today, we are excited to share the progress we've made, lessons learned, and what the future holds. To recap, we decided to switch to RN for 3 main reasons: Write it once - Stop building the same features twice, once on iOS and once on Android Talent portability - Enable devs to work fluently across iOS, Androi
How We Built the BFCM 2023 Globe - Shopify
Every year for Black Friday Cyber Monday (BFCM), we put together a real-time visualization of purchases made through Shopify-powered merchants worldwide. This year we're cooking up something big, and in anticipation we wanted to show you how we built the globe last year. Video of BFCM 2023 Globe Besides going for better visuals, a big focus was performance. We've put together an interactive deep d
How Shopify improved consumer search intent with real-time ML - Shopify
In the dynamic landscape of commerce, Shopify merchants rely on our platform's ability to seamlessly and reliably deliver highly relevant products to potential customers. Therefore, a rich and intuitive search experience is an essential part of our offering. Over the past year, Shopify has been integrating AI-powered search capabilities into our merchants’ storefronts. Shopify Storefront Search ha
Tophat: Crafting a Delightful Mobile Developer Experience - Shopify
Insight into how Shopify created a seamless one-click manual testing experience (known as "tophatting") for mobile applications by creating a macOS app.
Mitigating Deadlocks in high concurrency environments - Shopify
The problem In order to guarantee data integrity, MySQL requires locks prior to updating existing records. If multiple processes update data in the same table in parallel, deadlocks can occur depending on how the data is stored in disk and managed by MySQL. That can happen even if the different processes target different records. This blog post explores the problem of deadlocks in MySQL while upda
Shipping support for module script integrity in Chrome & Safari - Shopify
How we shipped ES module integrity in browsers and made commerce and the web better for everyone!
Improving Shopify App’s Performance - Shopify
As an integral part of Shopify's ecosystem, our mobile app serves millions of merchants around the world every single day. It allows them to run their business from anywhere and offers vital insights about store performance, analytics, orders, and more. Given its high-engagement nature, users frequently return to it, underscoring the importance of speed and efficiency. At the beginning of 2023, we
A Packwerk Retrospective - Shopify
This article was originally posted on the Rails at Scale blog. In September, 2020, our team at Shopify released a Ruby gem named Packwerk, a tool to enforce boundaries and modularize Rails applications. Since its release, Packwerk has taken on a life of its own, inspiring blog posts, conference talks, and even an entire gem ecosystem. Its popularity is an indication that Packwerk clearly filled a
Horizontally scaling the Rails backend of Shop app with Vitess - Shopify
Shop app horizontally scaled a Ruby on Rails app with Vitess. This blog describes Vitess and our detailed approach for introducing Vitess to a Rails app.
Getting Started with React Native Skia - Shopify
Skia is a cross-platform 2D graphics library that provides a set of drawing primitives which run on iOS, Android, macOS, Windows, Linux, and the browser. Over the past two years, Shopify Engineering has sponsored development of the @shopify/react-native-skia library that exposes Skia functionality to React Native. The React Native (RN) Skia community is one of the most vibrant and interesting in t
Introducing Ruvy - Shopify
We’ve recently open sourced a project called Ruvy! Ruvy is a toolchain that takes Ruby code as input and creates a WebAssembly module that will execute that Ruby code. There are other options for creating Wasm modules from Ruby code. The most common one is ruby.wasm. Ruvy is built on top of ruby.wasm to provide some specific benefits. We created Ruvy to take advantage of performance improvements f
Building a ShopifyQL Code Editor - Shopify
In October 2022, Shopify released ShopifyQL Notebooks, a first-party app that lets merchants analyze their shop data to make better decisions. It puts the power of ShopifyQL into merchants’ hands with a guided code editing experience. In order to provide a first-class editing experience, we turned to CodeMirror, a code editor framework built for the web. Out of the box, CodeMirror didn’t have supp
Sidekick’s Improved Streaming Experience - Shopify
In this post, learn how Shopify's Sidekick solves markdown rendering jank and response delay in LLM chatbots with buffering parser and async content resolution.
Shopify’s platform is the Web platform - Shopify
Remix is now the recommended way to build Admin apps on Shopify. With Remix, you get a best-in-class developer experience while ensuring exceptional out-of-the-box performance for your app. Remix embraces the web platform and web standards, allowing web developers to use more of their existing knowledge and skills.
Contributing support for a Wasm instruction to Winch - Shopify
Jeff Charles, a Senior Shopify Developer, shares key learnings from his successful pull request to Winch. The pull request aimed to add support for various WebAssembly instructions to Wasmtime's baseline (non-optimizing) compiler.
Creating a Flexible Order Routing System with Shopify Functions - Shopify
In this article, Ebun covers how we added flexibility to our previous one-size-fits-all order routing system with the introduction of “routing rules”, and how we dogfooded our own Shopify Functions feature to give merchants the ability to create their own routing rules.
Adventures in Garbage Collection: Improving GC Performance in our Massive Monolith - Shopify
At the beginning of this year, we ran several experiments aimed at reducing the latency impact of the Ruby garbage collector (GC) in Shopify's monolith. In this article, Jean talks about the changes we made to improve GC performance, and more importantly, how we got to these changes.
How Migrating from Vanilla Redux to Redux Toolkit Improved State Management in Shopify POS - Shopify
A look at Shopify’s experience improving state management in the Shopify POS app by migrating from a Vanilla Redux codebase to Redux Toolkit one.
What Being a Staff Developer Means at Shopify - Shopify
A staff developer is an individual contributor who can have the same scope of impact and seniority as an engineering manager.
Supporting Passkeys in Shop's Authentication Flows - Shopify
Passkeys are a new login credential based on public-key cryptography that replace the need for username and password sign-ins.
Lessons From Linguistics: i18n Best Practices for Front-End Developers - Shopify
Here are a few internationalization (i18n) best practices to help front-end developers avoid errors and serve more robust text content on multilingual websites and apps.