File upload in e2e tests using SauceLabs

This post explains how we upload test documents to SauceLabs server in two different ways and what is the difference between them.

I work on the team at Earnest which supports loan applications. Loan applications often require a user…

Unfolding paginated APIs

Here’s a common problem in the world of web development: you have to retrieve a list of items from an API endpoint…

An Introduction to the Debugger

The debugger is one of the most powerful, but underutilized, tools in a developer’s toolbox. The name “debugger” suggests that this tool can only be applied when dealing with bugs, but in reality it can be used for so much more.

Categories for Everyone!

At Earnest, we like predictable code. Who doesn’t? That can mean different things to different people. Generally, for us, that means having at least some confidence that our code obeys some mathematical laws when possible (this is something you might have picked up on if you read our…

Creating a Validation Library in JS Using Propositional Calculus

One of the cornerstones of building the bank of the future is ensuring the correctness and validity of our data. Banking is, after all, an industry that demands extreme precision and correctness.

Refactoring our Payment Processor

At Earnest, the core piece of infrastructure responsible for money movement is what we refer to internally as our ‘Payment Processor’. The Payment Processor is responsible for creating all monetary transactions, including generating deposits for newly originated loans…