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.

authors 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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authors 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.

8 Automated Testing Best Practices for a Positive Testing Experience

Testing doesn’t have to be tedious. With these automated testing best practices and tips, software engineers can leverage automated tests to boost their productivity and make their work more enjoyable.

17 minute readContinue Reading

Lev Yastrebov

Lev is an accomplished C# and .NET developer who leverages test-driven development, static analysis, and in-depth knowledge of technologies to solve tasks with robust, clean code. At leading smart marine technology company Wärtsilä, he created an algorithm for 3D seafloor mapping that resolves conflicting data from thousands of nautical charts.

Ensemble Methods: The Kaggle Machine Learning Champion

Two heads are better than one. This proverb describes the concept behind ensemble methods in machine learning. Let’s examine why ensembles dominate ML competitions and what makes them so powerful.

9 minute readContinue Reading

Juan Manuel Ortiz de Zarate

Juan is a lecturer at the University of Buenos Aires. His research focuses on AI, NLP, and social networks. He has more than a decade of data science experience and he’s published papers at ML conferences, including SPIRE and ICCS.

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Using RTK Query in React Apps With Redux Toolkit

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.

19 minute readContinue Reading

Gurami Dagundaridze

Gurami is a full-stack developer for the healthcare, gaming, and entertainment industries. As a Senior Front-end Engineer at the Bank of Georgia, he redesigned internal bank software systems. His redesigns leverage AWS, Node.js, GraphQL, and React.

Graph Data Science With Python/NetworkX

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.

9 minute readContinue Reading

Federico Albanese

Albanese is a developer and data scientist who has worked at Facebook, where he made machine learning model predictions. He is a Python expert and a university lecturer. His PhD research pertains to graph machine learning.

Using Express.js Routes for Promise-based Error Handling

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.

8 minute readContinue Reading

Vitaly Senko

Vitaly is a full-stack developer who has extensive experience in creating apps with Node.js, React, and .NET, including the maintenance of a healthcare platform with nearly 20 million users.

The Best React State Management Tools for Enterprise Applications

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.

10 minute readContinue Reading

Teimur Gasanov

Teimur is a React mentor and a senior front-end engineer on the Toptal core team.

SSH Logging and Session Management Using AWS SSM

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.

11 minute readContinue Reading

Vimal Paliwal

A certified AWS expert with a master’s degree in computer security, Vimal specializes in automating the cloud with Terraform, Kubernetes, and Python.

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.