Toptal Blog

Bitcoin blockchain is the backbone of the network and provides a tamper-proof data structure, providing a shared public ledger open to all. This article provides insight in blockchain technology, current status and its potential.

Since almost all smartphones today are equipped with location sensors, motion sensors, bluetooth, and wifi, today’s mobile apps can use context awareness to dramatically increase their capabilities and value. This article walks you through building a context aware app that employs complex event processing.

Reverse engineering and hacking are usually related to malicious activities that result in sleepless nights of engineers responsible for system maintenance.

Reverse engineering is a tool that we can utilize to find the flaws and improve our software in many aspects. This article shows us how to use these techniques to learn more about different implementations of web API.

One of the biggest and most common problems in front-end web development is state management. A developer is constantly focused on keeping the state object in sync with its view and the DOM representation. Users can interact with the application in many ways and it’s a big task to provide a clean transition from one view state to another.

We will see how using React JavaScript library can help us reduce application complexity and offload UI transitions from our application.

The publish-subscribe pattern (or pub/sub, for short) is a messaging pattern where senders of messages (publishers), do not program the messages to be sent directly to specific receivers (subscribers). Instead, the programmer “publishes” messages (events), without any knowledge of any subscribers there may be.

This article provides insight in how to use the pub/sub pattern, in Rails, to communicate messages between different system components without these components knowing anything about each other’s identity.

This article provides step by step guide for building hybrid multiplatform real-time mobile application using the Ionic Framework and the Firebase.

Data Driven Documents, or D3.js, is an awesome data visualization library. In this article, I’ll discuss one particularly compelling application of D3.js: map making. We’ll go through the common challenges of building a useful and informative web map, and show how in each case, D3.js gives you everything you need to make your map look and feel beautiful.

As mobile and tablet devices come closer to achieving final world domination, web technology is in a race to accommodate the ever-growing number screen sizes. However, devising tools to meet the challenges of this phenomenon brings a whole new set of problems, with one of the latest buzzwords to emerge being “responsive web”.

This article provides an overview on building a great Android application, from defining an idea to releasing an application to the store. Toptal developer Ivan Dimoski gives us a chance to learn from his experience in making Ooshies, an Android Live Wallpaper designed to give you a hug and make you feel loved each time you interact with your Android device.