Etsy Engineering Engineering Blog

When buyers search on Etsy, they need to quickly and easily find the perfect item. At the same time, sellers need to be confident their unique products are...

Etsy has maintained a sharded MySQL architecture since around 2010. This database cluster contains most of Etsy’s online data and is made up of ~1,000 tables...

Ever searched for something specific, only to be met with results that are close, but not quite? On Etsy’s Search Relevance team, that frustration is exactly...

In 2021, we published a blog post titled “Increasing experimentation accuracy and speed by using control variates,” describing how we reduce the variance of...

Rarely are there opportunities for big, bold, game-changing improvements in web performance. The Speculation Rules API (SRA) is a recent browser development...

For more than 20 years, Etsy has been the destination for human creativity online. Our marketplace is home to more than 100 million special items made,...

Imagine you have a fabulous idea to drive more sales on Etsy by giving out free ice cream with every purchase. How would you know if it will actually work? One...

Every day, shoppers from Etsy's community of nearly 90M buyers visit our marketplace to search for unique, handmade, and vintage items. But with over 100...

This post investigates the benefits and limitations of prompt engineering in two instances of AI-assisted onboarding relying on large language model (LLM)...

In the past, sellers were responsible for managing and fulfilling their own tax obligations. However, more and more jurisdictions are now requiring...

One of our Guiding Principles at Etsy is that we “commit to our craft.” This means that we have a culture of learning, in which we’re constantly looking for...

At Etsy, we’re focused on elevating the best of our marketplace to help creative entrepreneurs grow their businesses. We continue to invest in making Etsy a...

In 2020, Etsy concluded its migration from an on-premise data center to the Google Cloud Platform (GCP). During this transition, a dedicated team of program...

Etsy features a diverse marketplace of unique handmade and vintage items. It’s a visually diverse marketplace as well, and computer vision has become...

Easily the most important and complex screen in the Buy on Etsy Android app is the listing screen, where all key information about an item for sale in the Etsy...

Balancing Engineering Ambition with Product Realism Introduction In July of 2023, Etsy’s App Updates team, responsible for the Updates feed in Etsy’s mobile...

A little while ago, Etsy introduced a new feature in its iOS app that could place Etsy sellers' artwork on a user's wall using Apple's Augmented Reality (AR)...

Introduction Each year, Etsy hosts an event known as “CodeMosaic” - an internal hackathon in which Etsy admin propose and build bold advances quickly in our...

Introduction Personalization is vital to connect our unique marketplace to the right buyer at the right time. Etsy has recently introduced a novel, general...

Introduction The Feature Systems team at Etsy is responsible for the platform and services through which machine learning (ML) practitioners create, manage and...