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Building Wealthfront’s multi-platform design system

May 10, 2022 , , ,

Over the past two years at Wealthfront we’ve been building a design system from the ground up across all our frontend platforms: Android, iOS, and web. If you’re a Wealthfront client you may have noticed sweeping, iterative visual changes across our apps as we introduced new components and migrated features to adopt these components. At… Read more

Retrying e2e test suites with Jest

April 21, 2022 , ,

At Wealthfront, we pride ourselves on reliable test coverage across our codebases. However, like many engineering teams, we haven’t been able to completely eliminate flakiness from our end to end (e2e) test suites. While migrating to puppeteer certainly helped, it didn’t eliminate the problem entirely. We’ll get into what causes these flakes below, but suffice… Read more

Automating Data Quality Checks on External Data

Written by Emily Shiue and Melissa Chen The code was simple: query the third party API, if the “ModifiedAt” date returned was more recent than ours, send a notification to our clients. We had all the unit tests, integration tests, and monitoring in place. It had been running smoothly in production for months. So how… Read more

One-click Developer Login

On the Wealthfront iOS team, developer productivity is a top priority. Our infrastructure engineers develop new components and APIs to enable our product engineers to ship features faster, while our product engineers are empowered to identify and eliminate toil independently. Recently, we targeted one source of toil in the development workflow by automating login within… Read more

Migrating from Capybara to Puppeteer

A little over 9 months ago, Wealthfront converted 100% of our end-to-end tests from Selenium (via Capybara) to Puppeteer. The process involved converting hundreds of tests that provide coverage for just about all of Wealthfront’s product offerings on the website. This blog post will cover why we migrated away from Selenium, the process we used… Read more

Refactoring Production Code

If you work in the software field, chances are you’ve looked at someone’s code and said to yourself, “what the hell were they thinking?!” If you’ve worked in the software field long enough, you’ve probably said the same thing about your own code: Software production and tooling has come a long way in the past… Read more