How We Built The Deals Tab in Swift UI

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

Pierre Rodgers

Mar 5, 2024

Behind the Scenes - A Glimpse to Tax Calculations

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

Nancy Arnold

Jan 3, 2024

The AR Measuring Box: Etsy's answer to Big Tape Measure

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...

Pedro Michel

Sep 18, 2023

Mitigating the winner’s curse in online experiments

Experimentation plays a central role in how we test and deploy new ideas at Etsy. Not only does it provide teams with a scientific...

Stephane Shao

Dec 13, 2022

Understanding the collective impact of experiments

Autonomous experimentation is an integral part of Etsy’s product development cycle. Each team designs and runs its own experiments...

Stephane Shao

Dec 7, 2022

Faster ML Experimentation at Etsy with Interleaving

At Etsy, our product and machine learning (ML) teams are constantly working to make improvements to the experience of our buyers...

Ami Wulf

Aug 8, 2022

Improving the iOS Listing Screen with Generics

We launched Etsy’s iOS app way back in 2011, so we have a long and fruitful history in the App Store. The listing screen, where...

Hector García Peña

May 5, 2022

One Activity to Rule Them All

Reducing crashes and increasing engagement with Etsy’s Android app through architecture Over the past couple of years, the Etsy...

John Kalmi

Apr 26, 2022

Mutation Testing: A Tale of Two Suites

In January of 2020 Etsy engineering embarked upon a highly anticipated initiative. For years our frontend engineers had been using...

Nathan Thompson

Aug 17, 2020

Etsy’s Journey to TypeScript

Over the past few years, Etsy’s Web Platform team has spent a lot of time bringing our frontend code up to date. It was only...

Salem Hilal

Nov 8, 2021

Mobius: Adopting JSX While Prioritizing User Experience

Keeping up with the latest developments in frontend architecture can be challenging, especially with a codebase the size and age...

Allie Jones

Nov 4, 2021

Developing in a Monorepo While Still Using Webpack

When I talk to friends and relatives about what I do at Etsy, I have to come up with an analogy about what Frontend Infrastructure...

Salem Hilal

Aug 6, 2020

Making The Indian Rupee Work For Humans and Databases

As a global marketplace, Etsy offers support for a few dozen international currencies. Recently we decided to add the Indian rupee...

Marco Gaspari

Oct 14, 2022

Plurals at Etsy

Plurals at Etsy If you’ve ever been shopping online and encountered a message like “1 items added to cart” or even “1...

Danielle Grenier

Jun 27, 2022

How Etsy Localizes Addresses

Imagine you’re browsing the web from your overpriced California apartment one day and you find a neat new website with some...

Danielle Grenier

Sep 26, 2018

Scaling Etsy Payments with Vitess: Part 3 – Reducing Cutover Risk

Between Dec 2020 and May 2022, the Etsy Payments Platform, Database Reliability Engineering and Data Access Platform teams moved...

David Leibovic

Feb 22, 2023

Scaling Etsy Payments with Vitess: Part 2 – The “Seamless” Migration

Between Dec 2020 and May 2022, the Etsy Payments Platform, Database Reliability Engineering and Data Access Platform teams moved...

Keith Wells

Feb 22, 2023

Scaling Etsy Payments with Vitess: Part 1 – The Data Model

At the end of 2020, Etsy’s Payments databases were in urgent need of scaling. Specifically, two of our databases were no longer...

River Rainne

Feb 22, 2023

Leveraging Real-Time User Actions to Personalize Etsy Ads

Introduction Personalization is vital to connect our unique marketplace to the right buyer at the right time. Etsy has recently...

Alaa Awad

Jul 14, 2023

The Problem with Timeseries Data in Machine Learning Feature Systems

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

Kyle Gallatin

Jun 23, 2023

From Image Classification to Multitask Modeling: Building Etsy’s Search by Image Feature

Etsy announced the arrival of a powerful new image-based discovery tool on Etsy’s mobile apps. The ability to search by image...

Eden Dolev

May 26, 2023

Docs-as-code at Etsy

The question of documentation—not just formats and standards, but the tools and processes that can make documenting code a normal...

Afshin Mehrabani

Apr 13, 2023

A Customer-Focused Approach to Tooling

One year after Etsy's Frontend Engineering Group successfully swapped JavaScript Unit Testing tools, it was time to tackle another...

Nathan Thompson

Jul 14, 2022

Why We Relaunched Code as Craft

A few weeks ago, we relaunched our engineering blog, Code as Craft, and I want to share the story of why we did that. If you’re...

Najla Elmachtoub

May 3, 2022

Priority Hints - What Your Browser Doesn’t Know (Yet)

As a rule, users don’t like slow web pages. For online businesses, whose success depends on keeping customers engaged through...

David Ross

Jul 25, 2022

A Checklist Manifetsy

Introduction The first time I encountered it, Atul Gawande’s The Checklist Manifesto made intuitive sense to me. The book's...

Theresa Eades

Jul 19, 2022

How the 2020 Mask Surge Reshaped Etsy’s Taxonomy Capabilities

On April 3, 2020, the US Centers for Disease Control and Prevention (CDC) recommended wearing face masks in public to combat the...

Yael Kaufman

Feb 8, 2022

Being a Dynamic Leader

When we think about how we grow our people as leaders, our focus is often simply on getting them promoted. But promotion isn’t...

Sean Sutherland

Oct 24, 2022

Managing and Leading Globally Distributed Teams

When I started managing globally distributed teams shortly after the 2008 economic crisis, I never would have predicted that it...

Sean Sutherland

Oct 24, 2022

Leading your engineering team through an unexpected product pivot

This article was originally written for LeadDev. In tech, we talk a lot about failing fast: implementing small, incremental changes...

Najla Elmachtoub

May 26, 2022