Toptal Engineering Blog

With a static site generator back end in place from Part 1, now it’s time to implement a Gatsby.js-based front end, host it on Netlify, and get AWS to activate the whole pipeline.

Wikipedia describes Reactive Programming as “an asynchronous programming paradigm concerned with data streams and the propagation of change,” but what is it really?

In this article, Toptal Freelance WPF Developer Denis Jesus Gonzalez Sanchez demonstrates a WPF app using ReactiveUI with the MVVM pattern and uses it to access a REST API.

GraphQL is a query language for APIs, originally developed by Facebook for internal use. Since its public release, GraphQL has been compared to REST and other architectures.

In this article, Toptal JavaScript Developer Marcos Henrique da Silva demonstrates how to create a GraphQL Node.js API, and explains why you should try it, too.

Static websites are simple and fast, but it’s also possible to automate updates to them to keep them fresh and relevant. Find out how to generate daily-updated HTML pages that track the latest releases of popular GitHub repositories.

You can just write sequentially executed code in JavaScript, but should you?

In this article, Toptal Freelance JavaScript Developer Omar Waleed tests the widespread Node.js belief that synchronous code degrades performance and is, in a sense, just plain evil. Is this really true?

T9 predictive text has been around for ages, and it lost relevance with the advent of modern smartphones. However, T9 can still be a useful addition to certain types of apps on iOS.

In this article, Toptal Swift Developer George Vashakidze explains why T9 can still be useful and practical, and how you can add it to your next iOS app.

Cross-platform mobile apps are increasingly being built with React Native. But how can you scan for QR codes and augment the user’s camera view when they’re present?