Toptal Engineering Blog

Have you ever wanted to use Redux with features like React Query provides? Now you can, by using the Redux Toolkit and its latest addition: RTK Query. This article demonstrates how RTK Query is used in real-life scenarios, complete with detailed code examples.

Data inundates us like never before—how can we hope to analyze it? Graphs (networks, not bar graphs) provide an elegant approach. Find out how to start with the Python NetworkX library to describe, visualize, and analyze "graph theory" datasets.

Maintainable Express.js code after scaling means making common code more feature-rich while reducing boilerplate. Find out how to enable promise-based route code and centralize both error handling and normal-results handling in Express.js apps.

State management in React has been a hotly debated topic for years, yet little attention seems to be paid to enterprise-level applications and their specific requirements. Let’s take a closer look and compare three of the most popular state management tools available today.

A comprehensive tutorial on how to log SSH activity—minus sensitive input, like passwords—occurring in Linux AWS EC2 instances to either CloudWatch Logs or S3 buckets.

While good engineering managers can code, great ones can also communicate. Written communication is integral to the management and scaling of engineering teams, says Juan Pablo Buritica, who has led several successful teams of engineers.

How source code becomes a running program is often opaque: "Just run the compiler" is all that developers normally need to know. Writing an interpreter from scratch—including its lexer and parser—is an illuminating challenge.

Visual regression testing is not a new concept. Toptal engineers routinely use it, but with looming deadlines, they sometimes need to innovate and improvise. This article demonstrates how Toptal QA specialists leveraged UI testing and Cypress to run visual regression tests without resorting to specialized tools.