Spark Protip: Joining on skewed dataframes

At Simpl, most of our data and ML pipelines are highly dependant on Spark. And we all…

How can you crack Simpl developer interview

TL;DR : I want you to join Simpl to help me build awesome…

Classifying Gender Based On Indian Names In

How we used machine learning to know our users better

Deterministic A/B tests via the hashing trick

In principle A/B testing is really simple. To do it you need to define two separate user experiences, and then randomly allocate users between them:

def final_experience(user):
    if random.choice([0,1]) == 0:
        return…

Millions of transactions a month. Just 9 developers. Want to be our №. 10?

The Simpl Story — Part 1

On Trust, Mistrust and Money

Flashback

Enable tree-shaking in Rails/Webpacker

This article does not cover the basics of what tree-shaking is or how to enable it in Webpack because there is a lot of well-written content out there already. So my intention in this article would be to enable tree-shaking in Webpacker for Rails, revealing its…

Rails Upgrade from 4.2 to 5.0

It is a good practice to keep an application upto date with the major released versions. Rails 5 is got some exciting features to look out and improve the web development workflow. Here are the key features and steps to upgrade Rails 4.2 to 5.0.1.

Women’s Day series — Episode 4

A vivacious, driven member who always says “Yes!” to challenges that come her way, Devyani Saxena, is an…