Tagged In wealthfront engineering :
Building Mobile A/B Testing Infrastructure
Twenty years ago, one would have hardly heard the phrase “A/B testing”. In 2000, Google served its first A/B test to determine the optimal number of search results to display. In 2011 alone, they ran 7000 A/B tests across their platforms. A/B testing has become the bread and butter of product decision-making for Silicon Valley… Read more
How We Avoid A/B Testing Errors with Shrinkage
At Wealthfront, we use A/B tests to make our services more effective, informative, and convenient. Each A/B test consists of two or more variants of a feature or design, which we expose to visitors at random until we have have enough data to infer which is better. In a previous post, we explained why we… Read more
Testing JavaScript Modules
In our previous post we outlined benefits of writing JavaScript in modules. One benefit we didn’t mention was how much more testable JavaScript modules are. In your test file you can require the module under test and let the require system import any dependencies. The goal of this post is to outline some of the… Read more
Advice for the Transition from College to Industry
The transition from college to industry came with quite a few surprises and lessons. Reflecting back on own my experience, I want to share a few insights I’ve gained. Additionally I want to share habits I formed during my undergraduate that transitioned well, as well as those that required significant changes in order to assimilate… Read more
Why We Use Bayesian Inference
At Wealthfront, we’re constantly experimenting with our products to make them better. Like other internet companies, we use a metrics-driven approach to test product changes. Each change is validated with an A/B test (hypothesis test), where we evaluate the change on a subset of clients by measuring its impact on some business metric, like the… Read more
Testing with Optical Character Recognition (OCR)
Put not your trust in money, but put your money in trust. -Oliver Wendell Holmes, Sr., The Autocrat of the Breakfast Table At Wealthfront, we manage over $2.5 Billion in assets that we have been trusted with by our clients. Trust and transparency are the foundations of a strong relationship between a financial institution and… Read more