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.

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Lighter and Faster - A Guide to the Svelte Framework

by Teimur Gasanov

Web applications are becoming more popular day by day with stable options like React.js, Angular, and Vue.js. However, a serious competitor may be on the horizon — Svelte. In this article, Toptal freelance software developer Teimur Gasanov introduces Svelte, a new framework for building user interfaces. He does so by walking us through creating a common log-in form used by virtually every type of application.

10 minute readContinue Reading
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The Strengths and Benefits of Micro Frontends

by Bob Myers

Micro-frontend architectures decompose a front-end app into individual, semi-independent "microapps" working loosely together. This can help make large projects more manageable, e.g. when transitioning from legacy codebases.

12 minute readContinue Reading
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Integrating Stripe and PayPal Payment Methods in Ruby on Rails

by Henrique Reinaldo Sarmento

Secure payment processing is a key prerequisite for any eCommerce operation. If it fails, the consequences can be catastrophic for any company, big or small. In this article, Toptal Ruby on Rails Developer Henrique Reinaldo Sarmento outlines how you can create a Ruby on Rails eCommerce app, leveraging PayPal and Stripe for reliable and secure payments.

25+ minute readContinue Reading
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Machines and Trust: How to Mitigate AI Bias

by Michael McKenna

Unwanted AI bias is already a widespread problem. Machine learning models can replicate or exacerbate existing biases, often in ways that are not detected until release. So what can be done about it?

13 minute readContinue Reading
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Introduction to Functional Programming: JavaScript Paradigms

by Avi Aryan

Functional Programming is a paradigm of building computer programs using expressions and functions without mutating state and data. In this article, we will talk about doing functional programming using JavaScript. We will also explore various JavaScript methods and features that make it possible. In the end, we will explore different concepts associated with functional programming and see why they are so powerful.

6 minute readContinue Reading
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WordPress Continuous Deployment and Version Control with Bitbucket

by Alexa Green

WordPress developers spent years struggling with sub-optimal solutions for CI/CD. Despite the fact that they were using the most popular CMS on the market, they often had to improvise and resort to time-consuming practices. In this article, Toptal WordPress Developer Alexa Green shares her approach to WordPress deployment using Bitbucket and some straightforward code.

8 minute readContinue Reading
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Working with ESP32 Audio Sampling

by Ivan Voras

The successor of the revolutionary ESP8266, the ESP32 is a next-generation microcontroller. Find out how to sample its analog-to-digital converter (ADC) from a timer interrupt using the Arduino IDE.

8 minute readContinue Reading
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Caching and Connection Handling in .NET: An Aspect-Oriented Programming Tutorial

by Marko Pađen

We reduce boilerplate with common OOP patterns, but often, the code overhead of using patterns is almost the same—if not bigger—than if we’d used boilerplate code in the first place. In aspect-oriented programming tutorial, we implement two functions (aspects) that allow for generic database connection management and caching. These allow us to mark methods that, when called, will automatically have the required functionally present in through IL weaving.

12 minute readContinue Reading

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