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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.
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An Expert Workaround for Executing Complex Entity Framework Core Stored Procedures
Microsoft’s Entity Framework Core is a popular object-relational mapper, but it doesn’t support the return of complex type results from stored procedures. A clever bit of code gets us around this limitation, returning non-database entities with ease.

Pankaj Kansodariya
Pankaj is a back-end developer and Microsoft Certified Professional with more than 18 years of experience within the Microsoft ecosystem, including C#, VB.NET, SQL Server, and cloud computing with Microsoft Azure. He has worked as a .NET developer at companies including Granicus, Gartner, and Jacobs.
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.
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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 deep expertise in SQL, NoSQL, and Kubernetes. He built big data architecture at RTL’s 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.
Demystifying Debugging With React Developer Tools
Browser console logging is a hassle. Discover how React Developer Tools and third-party libraries make inspecting components, states, and props and tracking rendering and performance so much easier.

Teimur Gasanov
Teimur is a senior front-end engineer and React expert with wide-ranging web development experience at companies including Klarna and Clubhouse (now Shortcut).
Kotlin vs. Java: All-purpose Uses and Android Apps
Kotlin and Java are two powerful general-purpose languages popular for Android and beyond. We’ll discuss their top features and differences, then focus on how to smoothly transition between the two.

Gabriel Gircenko
Gabriel is a senior Android engineer with eight years of experience building apps from scratch in Kotlin and Java, and facilitating conversions between the two languages. Gabriel has worked on multimillion-dollar apps and has industry experience at companies like HBO and Yahoo.
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.
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An Angular 5 Tutorial: Step by Step Guide to Your First Angular 5 App
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