Engineering at Earnest

Scrumban: Our Blend of Agile

Is it possible to take the practices we like from Agile and cast aside…

Developing and Testing with Mountebank

We’ve written about our monolith, and our journey migrating to Kubernetes as we move towards having more microservices. This change has also caused us to upgrade our toolchain, like how we run Jenkins. In this piece, I’d like to introduce you to a tool that…

Kubernetes at Earnest

When I started down the path of writing this post about Kubernetes at Earnest I quickly realized that it was a rather…

Continuous Improvement: Delivering Jenkins Through Jenkins Pt 2

Continuous Improvement: Delivering Jenkins Through Jenkins Pt 1

Using Applicative Style to Increase Compositionality — Part II

Using Applicative Style to Increase Compositionality — Part I

Building an Innovation Day

After months of planning and crafting a special event to include people from across the entire organization, we…

5 Handy Dandy Postgres Features

At Earnest, we use Postgres a lot. The original codebase we lovingly call the “Monolith” was built with…

Monolith to Dockerlith: Learnings from Migrating Our Monolith to Docker

Like everyone’s monolith, ours is complex and was once a little bit out of control. Earnest’s monolith is involved in all major aspects of the business. It is responsible for accepting loan applications from…

Debugging in the dark!

You have a program behaving poorly, nothing in the log files, nothing in stdout, no ports responding — it’s a tough place to be. What if I told you that with a Linux environment provided by Docker you can see exactly what it is doing? But before we get to that answer let’s detour and talk…

Three Tiny Lessons from Functional Programming

In the past two years or so the term “Functional Programming” (FP for short) has cropped up everywhere. You can’t get away from it. Especially in javascript. It feels like every JS developer but me was invited to a cool FP party and all of a sudden…

7 Software Development Processes and Guiding Principles

At Earnest, our values, among others, are to deliver high-impact results and create lifelong value for our clients. We try to enforce these values in Earnest Home Engineering, a team of three software engineers and one QA engineer…

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…

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…

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.

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…