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Cabin Fever Coding: A Node.js Back-end Tutorial

Missing the luxury of a good, old-fashioned remote control when the laptop is beyond easy reach? Transform your old smartphone into a remote and learn some basic Node.js/Express/Pug along the way.

16-minute readContinue Reading
Kevin Bloch

Kevin Bloch

Kevin has 20+ years among full-stack, desktop, and indie game development. He lately specializes in PostgreSQL, JavaScript, Perl, and Haxe.

Turn Chaos Into Profit: Understanding the ETL Process

ETL can consolidate data from various sources into an organized, reliable, and usable database. This allows businesses to employ previously unused or underused data to improve their performance.

In this article, Toptal Data Modeling Developer Alexandre Wanderer demonstrates all stages of the ETL process in building a data warehouse.

10-minute readContinue Reading
Alexandre Wanderer

Alexandre Wanderer

Alexandre is a database and data migration specialist and team leader with over 25 years of experience in data integration, data warehousing, and data analytics. He has worked on projects across industries, including finance and automotive, for Volvo and other enterprises.

Working With React Hooks and TypeScript

Hooks have already changed the way we use React for the better. Add TypeScript to the mix, and developers can leverage static typing and type transformations to reduce the noise of many interface descriptions.

In this article, Toptal Software Developer Nicolas Zozol demonstrates hooks and TypeScript in React and explains how this powerful combo can save time and streamline your code.

7-minute readContinue Reading
Nicolas Zozol

Nicolas Zozol

Nicolas has worked with startups and big companies. He mainly relies on Java and JavaScript, but he’s very versatile with other languages.

Getting the Most Out of Pre-trained Models

Pre-trained models are making waves in the deep learning world. Using massive pre-training datasets, these NLP models bring previously unheard-of feats of AI within the reach of app developers.

10-minute readContinue Reading
Nauman Mustafa

Nauman Mustafa

Nauman is currently a senior deep learning engineer at VisionX, with expertise in building deep learning solutions for NLP and CV problems.

All Perks, No Hassle: An Angular 9 Tutorial

“Every year the internet breaks,” goes the saying, and developers usually have to go and fix it. Is this true when it comes to the long-awaited Angular version 9?

12-minute readContinue Reading
Joaquin Cid

Joaquin Cid

Joaquin is a full-stack and hybrid mobile app developer with 13+ years of experience working for companies like WebMD and Getty Images.

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Remote Work Tools of the Remote Work Trade

Working from home is no longer a business decision or a lifestyle choice. During the biggest public health crisis in a century, it’s a necessity: not to save time or money, but to save lives.

In this article, Toptal Technical Editor Nermin Hajdarbegovic introduces newcomers to essential tools used by remote workers.

10-minute readContinue Reading
Nermin Hajdarbegovic

Nermin Hajdarbegovic

A veteran tech writer, Nermin helped create online publications covering everything from the semiconductor industry to cryptocurrencies.

Sound Logic and Monotonic AI Models

For those working with AI, the future is certainly exciting. At the same time, there is a general sense that AI suffers from one pesky flaw: AI in its current state can be unpredictably unreliable.

12-minute readContinue Reading
Emmanuel Tsukerman

Emmanuel Tsukerman

The author of multiple cybersecurity courses and books, Dr. Tsukerman has designed top-tier, award-winning ML solutions.

Taking Firebase Serverless: Mobile and Web Applications Made Easy

Mobile and web applications typically need a back-end server, which requires maintenance, updates, backups, and more. So why not dispense with them?

In this article, Toptal Java Developer Phillip Edwards outlines how you can use Google Firebase to develop serverless applications without incurring a lot of costs.

11-minute readContinue Reading
Phillip Edwards

Phillip Edwards

Phillip has extensive experience in all aspects of software development. Recently, he has been developing apps using Google Firebase.

Well-structured Logic: A Golang OOP Tutorial

Can Golang be object-oriented? Go is a post-OOP programming language, however, it can still leverage OOP patterns to structure the code in a clear and understandable way. This tutorial demonstrates how to use Go with OOP concepts, including constructors, subtyping, polymorphism, dependency injection, and testing with mocks.

9-minute readContinue Reading
Leonhard Holz

Leonhard Holz

Leonhard is a serverless developer specializing in back-end development. He has expertise developing with several languages, including Go and Java, as well as databases like MySQL and MongoDB. Leonhard has experience in a variety of industries, designing applications that include web applications, image editing, and IPTV.

Flexible A/B Testing with AWS Lambda@Edge

One of the new possibilities offered by Lambda@Edge is the ability to implement server-side A/B testing using Lambdas on CloudFront’s edge servers.

In this article, Toptal Full-stack Developer Georgios Boutsioukis guides you through the process and outlines the pros and cons of A/B testing with Lambda@Edge.

9-minute readContinue Reading
Georgios Boutsioukis

Georgios Boutsioukis

Georgios is a full-stack developer with more than eight years of experience. He worked at CERN and as a member of the mobile API team at Booking.com.

Stars Realigned: Improving the IMDb Rating System

IMDb ratings have genre bias: For example, dramas tend to score higher. Removing common feature bias and keeping unique characteristics, it’s possible to create a new, refined score based on IMDb information.

10-minute readContinue Reading
Juan Manuel Ortiz de Zarate

Juan Manuel Ortiz de Zarate

Juan (MSc, computer science) is a data science/AI PhD student. As a senior web developer, his main expertise includes R, Python, and PHP.

Stork, Part 4: Implementing Statements and Wrapping Up

The development of our lightweight programming language created in C++ is nearing completion and we can finally see it in action.

In the final part of our Stork series, Toptal Full-stack Developer Jakisa Tomic explains how to implement statements, tuples, and modules.

16-minute readContinue Reading
Jakiša Tomić

Jakiša Tomić

Jakisa has 15+ years of experience developing various apps on multiple platforms. Most of his technical expertise is in C++ development.

Stork, Part 3: Implementing Expressions and Variables

Developing a new programming language from scratch tends to create unique challenges, followed by unconventional solutions that may go against some programming dogmas.

In Part 3 of our Stork series, Toptal Full-stack Developer Jakisa Tomic elaborates on how C++ macros can help and why expression implementation might not be as straightforward as expected.

18-minute readContinue Reading
Jakiša Tomić

Jakiša Tomić

Jakisa has 15+ years of experience developing various apps on multiple platforms. Most of his technical expertise is in C++ development.

The Need for Speed: A Toptal JavaScript Coding Challenge Retrospective

Toptal’s JavaScript Speed Coding Challenge invited creative solutions from the beginning. As the week played out, competitors got closer and closer to the maximum theoretical score. Then something unexpected happened…

6-minute readContinue Reading
Eva Bojorges Rodriguez

Eva Bojorges Rodriguez

Toptal’s Latin America Community leader, Eva specializes in AI and speaks at events worldwide about game theory and data science.

Stork, Part 2: Creating an Expression Parser

Would you rather develop a statically or dynamically typed programming language? How would you devise your expression parser?

In the second part of our Stork series, Toptal Full-stack Developer Jakisa Tomic outlines his preferred approach and demonstrates how you can create a functional expression parser.

14-minute readContinue Reading
Jakiša Tomić

Jakiša Tomić

Jakisa has 15+ years of experience developing various apps on multiple platforms. Most of his technical expertise is in C++ development.

Stork: How to Make a Programming Language in C++

Did you ever consider creating your very own programming language, either as a result of necessity or professional curiosity?

In part one of our series, Toptal Full-stack Developer Jakisa Tomic takes the first steps toward creating a lightweight scripting language written in C++.

11-minute readContinue Reading
Jakiša Tomić

Jakiša Tomić

Jakisa has 15+ years of experience developing various apps on multiple platforms. Most of his technical expertise is in C++ development.

Toptal Engineering Expert

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.
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