Toptal Engineering Expert
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.
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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.
The 10 Most Common JavaScript Issues Developers Face
At first, JavaScript may seem quite simple. Yet the language is significantly more nuanced, powerful, and complex than one would initially be led to believe. Many of JavaScript’s subtleties lead to a number of common problems—10 of which we discuss here—that keep code from behaving as intended. It’s important to be aware of and avoid these pitfalls in one’s quest to become a master JavaScript developer.

Ryan J. Peterson
Ryan is an architect, entrepreneur, and developer. He is skilled in building cloud-scalable, extensible software systems.
Unity AI Development: An xNode-based Graphical FSM Tutorial
Take your Unity AI game to the next level with xNode. In this tutorial, we boost our FSM-based AI with a graphical user interface, delivering an enhanced development environment.

Garegin Tadevosyan
Garegin is an accomplished Unity and C# game developer. He created a networking protocol for gamified playground equipment, served as the CTO of an educational gaming startup, and was a game developer on a multinational social-casino team.
Social Network Analysis Using Power BI and R: A Custom Visuals Guide
Microsoft’s Power BI is one of the most popular software solutions used to perform social network analysis. Here’s how to create custom Power BI visuals in R for compelling and flexible results.

Bharat Garg
Bharat is a data scientist and developer who specializes in designing and developing interactive reports and tools to facilitate decision-making. He has worked with small startups and large corporations, such as Comcast, MetLife, UnitedHealth Group/Optum, and Jefferson Health. One of Bharat’s projects delivered $6 million in revenue, and another delivered $10 million in savings.
Code Writing Code: An Introduction to the Theory and Practice of Modern Metaprogramming
Metaprogramming is a technique in which software programs write and modify other software programs, including themselves. Learn how metaprogramming can be used to optimize and organize your code.

Will Beddow
Will is a full-stack developer with a portfolio that spans a diverse range of industries and technologies. His recent work includes machine learning applications, fintech systems design, cloud orchestration programs, and large corporate software systems. Will is the CTO of a fintech company that builds AI tools for the private equity industry.
gRPC vs. REST: Getting Started With the Best API Protocol
gRPC, REST’s up-and-coming competitor, approaches synchronous communication from another angle, offering protocol buffers and typed contracts. What does that mean for your project?

Laszlo Gyori
Laszlo is a solution architect, software developer, and expert on microservices architecture, gRPC, and REST. He has a master’s degree in IT from Budapest Institute of Technology.
Efficiency at Scale: A Tale of AWS Cost Optimization
Understanding total spend is a common challenge for cloud users, especially on projects with complex pricing models. This article explores the top AWS cost optimizations that will help you scale your platform effectively.

Rudolf Eremyan
Rudolf is a data scientist who has architected big data processing infrastructures on AWS and implemented data engineering solutions for Fortune 500 companies, including Disneyland Hong Kong and Philip Morris. He was invited to participate in NASA’s 2021 International Space Apps Challenge as a speaker and judge.
An In-depth Look at C++ vs. Java
Deciding on a language can be intimidating when you don’t have deep experience with the available options. This comparison explores the fundamental differences between C++ and Java, and what to consider when choosing between them.

Timothy Mensch
Timothy is an experienced software architect who has created multiple game engines with C++, including one used in more than 100 titles. His extensive background in Java ranges from Android game and application development to industry experience at Amazon, building an Android client for the AWS AppStream service. He has used more than 20 programming languages in his career, several of which he custom created to meet a specific need.
PageSpeed Insights Best Practices: Acing Google’s Assessment
Page speed is an important ranking attribute for search engines, making performance optimization a prerequisite for successful sites. Here’s how Google PageSpeed Insights can help identify and rectify performance issues.

Timofey Bugaevsky
Timofey is a CTO and veteran full-stack engineer with over 18 years of experience developing new products and sustaining existing ones. He holds an Engineer’s Degree in Robotics and an MBA.
Working With TypeScript and Jest Support: An AWS SAM Tutorial
JavaScript boilerplate is easy enough to come by, but there’s a bit more to starting AWS SAM projects with TypeScript. Here’s how to create an AWS SAM TypeScript project from scratch with Jest support.

Mohammad Faisal
Mohammad is a full-stack developer who has architected several applications on AWS using Lambda, NoSQL, and Node.js. He has extensive experience in optimizing AWS infrastructure for midsized companies.
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