Toptal Engineering Expert
The Secret Behind Steady App Performance: Asynchronous JavaScript
JavaScript’s default synchronous methods can freeze an application, scaring off end users. Here’s how you can leverage asynchronous JavaScript techniques to increase control over front-end responsiveness.

Muhammad Ammar Ilyas
Muhammad is a full-stack developer with more than a decade of experience delivering web and mobile applications for various companies, including Scopic, Microblink, and Resulta. He has JavaScript expertise ranging across Node.js, Next.js, React, React Native, and headless WordPress solutions.
How C++ Competitive Programming Can Help Hiring Managers and Developers Alike
Programmers gain valuable real-world skills from algorithm competitions that can boost their job prospects—and contest ratings make it easier for hiring managers to find top talent. Explore competitive C++ with a programmer whose scores got them recruited by Google.

Anitet Wheeler-Rose
Anitet is a full-stack engineer and CTO with expertise in C++, JavaScript, and DevOps. A former site reliability and software engineer at Google, Anitet was recruited after achieving an 85th to 90th percentile ranking at algorithm programming competition events.
Streamline Event-driven Microservices With Kafka and Python
With the rise of big data, cloud, and streaming platforms, monolithic apps just won’t do. Here’s a blueprint for an adaptable and scalable event-driven microservices project using Kafka and Python.

Dmitry Shurov
Dmitry is a software developer and Python expert. He has eight years of experience at companies such as Kaspersky and FABLEfx, and has developed multiple microservices systems across the globe using Kafka and Python.
SolidJS vs. React: The Go-to Guide
SolidJS is a blazing-fast framework that dodges virtual DOM manipulation. Let’s see how it compares to React, the industry standard, when it comes to components, performance, and developer productivity.

Nathan Babcock
Nathan is a senior React engineer and an expert in streamlining UI/UX with React. As the lead design engineer at Motorola Solutions, he marshaled a product combining React, Angular, and Svelte to company-wide deployment, garnering more than 100,000 downloads. Nathan also developed Hypetrigger, a popular machine vision system for use with streaming services and that is built with React and SolidJS for the front end.
Big Data Architecture for the Masses: A ksqlDB and Kubernetes Tutorial
Today’s cloud building blocks empower any size team—even a lone engineer—to build big data solutions. Learn how to use open-source tools to create scalable architecture for your next project.

Dmitrii Bolotov
Dmitrii is a solution architect and developer with more than 11 years of experience and expertise in SQL, NoSQL, and Kubernetes. He built big data architecture at Videoland, founded and acted as CTO for Deetask, a Vietnamese marketplace app similar to Thumbtack, and holds a master’s degree in computer science from Izhevsk State Technical University.
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Demystifying Debugging With React Developer Tools
Bugs are often buried deep within the code and software developers spend a great deal of time hunting them down. Many software developers debug front-end code using the browser’s console logging, but this is cumbersome and inefficient. Discover how React Developer Tools can speed up the debugging process by providing powerful tools to inspect components, monitor state and props, and track rendering and performance.

Teimur Gasanov
Teimur is a software developer specializing in web application development. He has extensive experience developing with front-end technologies, such as React, TypeScript, and JavaScript, and has implemented applications for innovative companies such as Klarna, where he designed interfaces for interacting with digital wallets from Apple, Google, and Samsung.
How to Deploy Django on Heroku: A Pydantic Tutorial, Part 3
Heroku makes deployment—and redeployment—incredibly simple. Explore Heroku’s Django hosting in this tutorial, and see for yourself.

Arjaan Buijk
Arjaan is a senior engineer and data scientist who creates mission-critical, Python-based cloud solutions focused on Rasa for international banks and insurance companies. He architects and teaches large-scale Kubernetes solutions.
Investing in Unit Testing: Benefits and Approaches
Stakeholders demand quick fixes for a buggy app release. Such patching is costly, and does not always offer a complete solution. Break the cycle with unit testing, a worthwhile investment in project quality.

Dacian Florea
Dacian is a senior full-stack mobile applications developer and a contributor to the Flutter framework. He specializes in rigorous testing solutions that help companies around the world design and deliver quality software applications.
Building Simple and Efficient Components With React-Bootstrap
With websites being viewed on so many different types of devices and in so many screen sizes, a responsive user interface is more important than ever. Leverage the power of two popular technologies with the React-Bootstrap library for performant, responsive components.

Matej Bilić
Matej is a full-stack developer with expertise across a variety of back-end and web technologies, including React, React Native, Bootstrap, and Django. He specializes in advanced web applications and built a global, bilingual travel and tourism app using React and React Native.
Heavy Computation Made Lighter: React Memoization
Unnecessary component computation drastically reduces application performance. Avoid this pitfall by using React memoization hooks and render component caching.

Prateek Karki
Prateek is a React engineer with more than seven years of experience in web development. An expert in delivering a top-tier user experience through the union of engineering and design, he has worked on enterprise-scale solutions in diverse industries, including roles at Precision Drilling and Fresh Tracks Canada.
Mining for Data Clusters: Social Network Analysis With R and Gephi
Explore X (formerly Twitter) data clusters to uncover user behaviors (e.g., repost and reply patterns) within online communities. This guide focuses on a politically charged data set to illustrate the process of visualizing and analyzing social data.

Juan Manuel Ortiz de Zarate
Juan is a developer, data scientist, and doctoral researcher at the University of Buenos Aires where he studies social networks, AI, and NLP. Juan has more than a decade of data science experience and has published papers at ML conferences, including SPIRE and ICCS.
Supply Chain Optimization Using Python and Mathematical Modeling
Improving supply chains is a top priority worldwide. Discover how mathematical optimization and Python coding can help keep a complex supply chain competitive.

Michael Hopf
Michael is a developer, data science consultant, and expert in supply chain optimization for heavy industry clients in rail, vessels, and mining. He has a PhD in mathematical optimization and was a consultant in the analytics practice of McKinsey & Company’s QuantumBlack for four years.
Identifying the Unknown With Clustering Metrics
Clustering in machine learning has a variety of applications, but how do you know which algorithm is best suited to your data? Here’s how to amplify your data insights with comparison metrics, including the F-measure.

Surbhi Gupta
Surbhi is a data scientist and developer with expertise in machine learning and robotics. A former senior data science engineer at Utopia Global, her experience ranges across ML fields including NLP, computer vision, and OCR. She has a master’s degree in mechatronics, and has published research in the field of robotics and optimization.
Future-proof Your Android Code, Part 2: Functional Reactive Programming in Action
The functional reactive programming (FRP) paradigm is becoming increasingly mainstream. In this installment, we discuss FRP essentials like system design and libraries, and implement a sample application.

Iliyan Germanov
Iliyan is an Android developer and CTO who has founded four startups and created several top-rated apps, including Ivy Wallet, which has received 10 YouTube tech community “best UI/UX” awards. He specializes in functional programming, UX, Kotlin, and Haskell.
The Foundations of Functional Reactive Programming in Android
This tutorial explores the mathematical concepts behind two key programming paradigms, functional programming and reactive programming, so you can build long-lasting Android architecture.

Iliyan Germanov
Iliyan is an Android developer and CTO who has founded four startups and created several top-rated apps, including Ivy Wallet, which has received 10 YouTube tech community “best UI/UX” awards. He specializes in functional programming, UX, Kotlin, and Haskell.
.NET on Linux: Simpler Than It Seems
Discover Microsoft .NET’s cross-platform development capabilities by building a Dockerized ASP.NET and Entity Framework application on Linux.

Zablon Dawit
Zablon is a full-stack web developer specializing in ASP.NET and JavaScript. He has created enterprise software for various companies, including Pelmorex Corp and S.R.E Software Development.
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