Toptal Engineering Blog

The Toptal Engineering Blog is a hub for in-depth development tutorials and new technology announcements created by professional software engineers in the Toptal network.

Toptalauthors are vetted experts in their fields and write on topics in which they have demonstrated experience. All of our content is peer reviewed and validated by Toptal experts in the same field.
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Toptalauthors are vetted experts in their fields and write on topics in which they have demonstrated experience. All of our content is peer reviewed and validated by Toptal experts in the same field.

True Dependency Injection with Symfony Components

The Dependency Injection Container in Symfony2 allows components to be injected with their dependencies, and is often used as a Service Locator, which when combined with the DI-container pattern is considered to be an anti-pattern by many.

In this article, Toptal engineer Vasilii Lapin shows us how you can build a simple Symfony2 application using the DI-container, but without implementing the Service Locator pattern.

11 minute readContinue Reading
Vasilii Lapin

Vasilii Lapin

Vasilii has worked as a web architect and PHP back-end developer, specializing in NIX administration, and high-load, large scale projects.

MySQL Master-Slave Replication on the Same Machine

Developers often work on only one machine, and have their whole development environment on that machine. Testing database replication before deploying changes in this kind of a development environment can be a challenging task.

In this article, Toptal engineer Ivan Bojovic guides us through a step-by-step tutorial on how to implement MySQL master-slave replication on one machine.

8 minute readContinue Reading
Ivan Bojovic

Ivan Bojovic

Ivan has over 11 years of experience with MySQL, Oracle, PostgreSQL and other database systems, and is a certified MySQL DBA.

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Context Validation in Domain-Driven Design

Handling all validation in domain objects results in objects that are huge and complex to work with. In domain-driven design, using decoupled validator components allows your code to be much more reusable and enables validation rules to rapidly grow.

In this article, Toptal engineer Josip Medic shows us how validation can be decoupled from domain objects, made context-specific, and structured well to achieve more sustainable validation code.

10 minute readContinue Reading
Josip Medic

Josip Medic

Josip is devoted to writing bug-free, maintainable, and scalable code, and is constantly educating himself about new technologies.

Integrating Facebook Login in AngularJS App with Satellizer

Integrating social network login in web applications directly using their SDKs can be a time consuming task. The fact that these SDKs keep changing every now and then doesn’t help either.

In this article, Toptal engineer Son Nguyen Kim provides us with an in-depth tutorial on how to use Satellizer, a feature-rich AngularJS library to integrate Facebook Login in an AngularJS web app.

10 minute readContinue Reading
Son Nguyen Kim

Son Nguyen Kim

Son is highly skilled with software engineering and ML algorithms and always tries hard to tackle problems with a simple approach.

Commoditized Smartphones: Bringing 4G To Developing Countries

Are we really going to need $500 phones to get people in developing countries on 3G or 4G? Not really.

Welcome to the world of commoditised smartphones. Allow us to explain what’s going on and why it could have a significant impact on software and hardware industries.

11 minute readContinue Reading
Nermin Hajdarbegovic

Nermin Hajdarbegovic

As a veteran tech writer, Nermin helped create online publications covering everything from the semiconductor industry to cryptocurrency.

Grape Gem Tutorial: How To Build A REST-Like API In Ruby

In this tutorial, Toptal Engineer Orban Botond demonstrates how to use the Grape gem – a REST-like API micro-framework for Ruby – to build backend support in Rails for a JSON API. Grape is designed to run as a mountable rack engine that complements your web applications without interfering with them.

15 minute readContinue Reading
Botond Orban

Botond Orban

Botond is a skilled developer who enjoys writing readable code. He learnt to program at 13 on a ZX Spectrum-compatible Russian PC.

What's New in ES6? Perspective of a CoffeeScript Convert

CoffeeScript allows developers to make the most out of JavaScript-based platforms without having to jump through its awkward language hoops. However, with the introduction of ES6 features into major JavaScript engines, plain JavaScript is now nearly as friendly and powerful out-of-the-box as CoffeeScript.

In this article, Toptal engineer William Coates shares his findings on ES6 from the perspective of a CoffeeScript convert.

8 minute readContinue Reading
William Coates

William Coates

A full-stack developer and entrepreneur with 15+ years of experience, William (MSc) loves to keep up-to-date with the latest web tech.

Toptal Engineering Expert

Gabriel Courtemanche

Gabriel is a highly efficient and reliable professional who possesses a broad skill set for web application development. He's been working on a range of products and clients—from working on scalability problems in production engineering teams at Shopify and Autodesk to launching new applications for startups. Most of his work consists of leading technical teams, by creating an easy development environment, fixing technical debts, providing best practices code examples, and mentoring devs.
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Previously At

Shopify

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Marcos Henrique da Silva

Creating a Secure REST API in Node.js

By Marcos Henrique da Silva
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