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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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How to Get Rounded Corner Shapes in C++ Using Bezier Curves and QPainter: A Step-by-Step Guide
The current trend in graphic design is to use a lot of rounded corners in all sorts of shapes. We can observe this on many web pages, mobile devices, and desktop applications, as rounded corners make the user interface feel smoother and nicer. However, what if we have to generate rounded corners on the fly, and we cannot preload it from an image?
In this article, Toptal Freelance Software Engineer Bojan Kverh guides us in a step-by-step tutorial on how to develop a simple class in C++ that can turn a complex polygon into a shape with rounded corners using Bezier curves and QPainter.
Bojan Kverh
A PhD (CE) and former assistant professor with more than 20 years of experience, Bojan’s a true C/C++, Linux, and Qt expert.
Service-oriented Architecture With AWS Lambda: A Step-by-Step Tutorial
AWS Lambda offers a relatively thin service with a rich set of ancillary configuration options, making it possible to implement easily scalable and maintainable applications leveraging these services.
In this article, Toptal engineer Andrew Crosio gives us a step-by-step tutorial for building an image uploading and resizing service and demonstrates how AWS Lambda can be used as a platform to easily build service-oriented architecture applications.
Andrew Crosio
Andrew has experience developing applications in a variety of languages. He has worked for leading web companies and startups.
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Persisting Data Across Page Reloads: Cookies, IndexedDB and Everything In-Between
Modern web browsers offer a number of different APIs and mechanisms to storing data on the client-side. But are all of these options created equal?
In this article, Toptal engineer Stephen Villee demystifies the various client-side storage options available in modern web browsers and explains how each of these can play a role in storing session data on the client-side.
Stephen Villee
Stephen has been a software engineer for 30+ years. He prides himself on being meticulous and developing high quality software.
Bootstrapped: Building A Remote Company
There are a number of things which motivated me to start my current company. Breaking away from client work while retaining all the benefits of being a location independent freelancer was one of them.
We’re a team of 10 now, serving more than 1,500 businesses worldwide. We have an office in Berlin, but many of us work remotely. In this article, I’ll dig into to the principles, tools and lessons that have helped us along the way. After reading it, I hope you’ll be able to architect your software company so it’s remote-friendly right from the start.
Jan Schulz-Hofen
Founder and CEO of Planio and otherwise successful startup entrepreneur, Jan (MSc) knows development and project management inside and out.
Project Rider: A Standalone ReSharper IDE
With Microsoft’s no-brainer shift towards open source and interoperability it was only a matter of time before we started seeing alternatives to some of their key products, like Visual Studio. Enter Project Rider: the code name for IDE guru JetBrains’ competition to Visual Studio.
Here’s the lowdown on Project Rider, the newest member of the IntelliJ platform family.
Kate Scheer
A true multipotentialite, Kate has worked as a video game artist, full-stack developer, movie script author, tech editor, and animal vet.
The Art of War Applied To Software Development
The Art of War is an ancient military treatise, but despite its age, the text is still included in the syllabus at many military schools. Sun Tzu’s principles and teachings also have practical applications in politics, business, sports, and, believe it or not, software development. In fact, you might just be applying some of these principles in your daily routine, without even knowing.
In this post, Toptal Freelance Software Engineer Jose F. Maldonado explains why many of these ancient teachings still matter, and what you can do to make them work for you and your team.
José Maldonado
José is a skilled software developer with a computer engineering degree and experience in web development, mobile apps, and bug fixing.
React, Redux, and Immutable.js: Ingredients for Efficient Web Applications
Unlike most front-end web frameworks, React’s aim is to solve the various challenges of building user interfaces that rely on changing data. Although React is a simple JavaScript library and is easy to get started with, it is still possible to misuse it in ways that deny the web app from reaping the benefits that React has to offer.
In this article, Toptal engineer Ivan Rogic demonstrates the synergy of React, Redux and Immutable.js, and shows how these libraries together can solve many performance issues that are often encountered in large web applications.
Ivan Rogic
Ivan first started coding back in 2007 at the beginning of his college education, and he became really passionate about it.
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