Toptal Engineering Blog

The Toptal Engineering Blog is a hub for in-depth development tutorials and new technology announcements created by professional freelance software engineers in the Toptal network.
Subscribe for daily updates today and check out the wealth of technical resources published by the Toptal network.
Vuk Djapic
Getting Started with the Elm Programming Language

Elm is a purely functional, strongly typed, reactive, and event-driven web client language. It takes a step back from the norms and really changes the way you reason about and program web application front-ends.

In this article, Toptal Freelance Software Engineer Vuk Djapic takes you through the exotic concepts of Elm and its pros and cons in real world use.

Continue reading →
Dino Causevic
Getting Started with TensorFlow: A Machine Learning Tutorial

TensorFlow is more than just a machine intelligence framework. It is packed with features and tools that make developing and debugging machine learning systems easier than ever.

In this article, Toptal Freelance Software Engineer Dino Causevic gives us an overview of TensorFlow and some auxiliary libraries to debug, visualize, and tweak the models created with it.

Continue reading →
Oliver Holloway
From Solving Equations to Deep Learning: A TensorFlow Python Tutorial

TensorFlow makes implementing deep learning on a production scale a breeze. However, understanding its core mechanisms and how dataflow graphs work is an essential step in leveraging the tool’s power.

In this article, Toptal Freelance Software Engineer Oliver Holloway demonstrates how TensorFlow works by first solving a general numerical problem and then a deep learning problem.

Continue reading →
Alonso Ayala Ortega
Test-driven React.js Development: React.js Unit Testing with Enzyme and Jest

Any piece of code that has no tests is said to be legacy code according to Michael Feathers. Therefore, one of the best ways to avoid creating legacy code is using test-driven development (TDD).

While there are many tools available to create unit tests in JavaScript and, in this post, we will use Jest and Enzyme to create a React.js component with basic functionality using TDD.

Continue reading →
Cody Nash
Create Data from Random Noise with Generative Adversarial Networks

Generative adversarial networks, among the most important machine learning breakthroughs of recent times, allow you to generate useful data from random noise. Instead of training one neural network with millions of data points, you let two neural networks contest with each other to figure things out.

In this article, Toptal Freelance Software Engineer Cody Nash gives us an overview of how GANs work and how this class of machine learning algorithms can be used to generate data in data-limited situations.

Continue reading →
Iulian Gulea
A Guide to Performance Testing and Optimization With Python and Django

Donald Knuth said that “premature optimization is the root of all evil.” But there comes a time, usually in mature projects with high loads, when the need to optimize presents itself. In this article, Toptal Freelance Software Engineer Iulian Gulea talks about five common methods to optimize a web project’s code using principles that can be used in Django as well as other frameworks and languages. Using these principles, he demonstrates how to reduce the response time of a query from 77 to 3.7 seconds.

Continue reading →
Rodrigo Donini
How to Create Exclusive Custom Taxonomies in WordPress

In WordPress, taxonomies allow you to flexibly organize your content in categories with tags and more. However, when defining custom taxonomies, you may not get the desired behavior out of the box.

In this article, Toptal Freelance Software Engineer Rodrigo Donini shows how exclusive custom taxonomies can be implemented in WordPress for strict categorization of posts.

Continue reading →
Fernando Rivas
Theming with Sass: An SCSS Tutorial

When it comes to theming; that is, changing the look and feel of your website while maintaining the same layout, Sass’ features—like mixins or functions—can feel like taking a plane instead of walking! In this tutorial on SCSS, we’re going to create a minimal theme and use SCSS to give our CSS programming some superpowers.

Continue reading →
Agustin Villalba
Introduction to Objects and References in PHP Memory

In this article, I will talk about how object and variable references are controlled in memory, since this is an issue that can generate discussion and differing opinions. One question to ponder is: “By default, are objects passed by reference or by copy in PHP?” I’m going to talk first about what references aren’t in PHP; secondly, I’ll discuss what they are, and finally, I will examine how the garbage collector works in PHP.

Continue reading →
Ivan Cesar
An Elasticsearch Tutorial for .NET Developers

Elasticsearch is one of the most powerful full-text search engine solutions out there. Using the NEST package, you can easily leverage the power of Elasticsearch in your .NET projects.

In this article, Toptal Freelance Software Engineer Ivan Cesar shows how Elasticsearch can solve real-world full-text search problems in your .NET projects.

Continue reading →
Subscribe
The #1 Blog for Engineers
Get the latest content first.
No spam. Just great engineering posts.
The #1 Blog for Engineers
Get the latest content first.
Thank you for subscribing!
Check your inbox to confirm subscription. You'll start receiving posts after you confirm.