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Software development is a complex field that requires a deep understanding of concepts such as SOLID principles. These principles, first introduced by Robert C. Martin, provide a set of design guidelines that help create software that is easy to understand, maintain, and extend. As a result, mastering these principles is crucial for any software developer looking to enhance their skills and advance in their career. Fortunately, there are numerous online courses and certifications available that offer a comprehensive understanding of SOLID principles. In this article, we will explore the ten best SOLID principles courses and certifications online.

1. Pluralsight

Pluralsight is a well-known online learning platform that offers various courses on software development topics, including SOLID principles. Their SOLID Principles: Building Blocks of Software Design course is highly recommended for beginners. It covers each principle in-depth and provides practical examples to help solidify understanding. The course is taught by experienced instructors who guide students through exercises, ensuring the application of SOLID principles in real-world scenarios.

2. Udemy

Udemy is another popular online learning platform that offers a wide range of courses, including several focusing on SOLID principles. One highly regarded course is SOLID Principles of Object-Oriented Design by Steve Smith. This course presents the principles in a clear and concise manner, with practical illustrations. It also includes quizzes and coding exercises to reinforce understanding and application.

3. Coursera

Coursera, in collaboration with the University of Alberta, offers a comprehensive course called Software Design for Non-Designers. Although it covers various design concepts, a significant portion of the course is dedicated to SOLID principles. This course provides insights into design patterns and how SOLID principles contribute to robust and maintainable software. With graded assignments and a final project, students receive hands-on practice applying SOLID principles in real-world scenarios.

4. LinkedIn Learning

LinkedIn Learning offers a course called SOLID Principles for Developers. Taught by instructor Jon Peck, the course provides a detailed understanding of each principle, along with practical examples in multiple programming languages. The course also covers advanced topics, such as dependency injection and inversion of control containers, enhancing students’ understanding of SOLID principles in complex scenarios.

5. The Pragmatic Studio

The Pragmatic Studio offers a SOLID Principles workshop that emphasizes practicality and real-world applications. This workshop focuses on understanding the principles’ intent and teaches techniques for refactoring code to adhere to SOLID guidelines. The workshop utilizes a hands-on approach, allowing participants to practice learning through coding exercises. With a combination of clear explanations and interactive exercises, this workshop ensures practical mastery of SOLID principles.

6. Udacity

Udacity’s Clean Code: Writing Readable Software course covers SOLID principles extensively. In this course, participants learn not only how to apply SOLID principles but also how to ensure clean and readable code. The course provides practical examples and encourages participants to refactor code to adhere to SOLID guidelines. Through interactive quizzes and coding exercises, participants gain a strong understanding of SOLID principles in the context of clean code.

7. PluralSight’s SOLID Principles: The Liskov Substitution Principle

Pluralsight’s SOLID Principles: The Liskov Substitution Principle dives deep into one of the crucial SOLID principles—the Liskov Substitution Principle (LSP). This course helps participants understand the LSP and its significance in maintaining the integrity of object-oriented design. By examining real-world examples and best practices, participants can confidently apply the LSP within their software projects.

8. Udemy’s SOLID C#

Udemy offers the SOLID C# course, specifically designed for developers working with the C# programming language. This course provides a detailed exploration of SOLID principles in the C# context, with hands-on examples and exercises. By focusing on C# implementation details, developers can gain a deeper understanding of SOLID principles and their specific application in C# projects.

9. Code School’s Clean Code

Code School’s Clean Code course is an excellent resource for developers looking to improve their code quality and understanding of SOLID principles. While the course covers various aspects of clean code, it also emphasizes SOLID principles. Participants learn how SOLID principles contribute to clean and maintainable code, with numerous coding challenges to practice their skills. The course utilizes interactive exercises and real-world examples to solidify understanding.

10. Software Architecture & Design Mastery Bootcamp

The Software Architecture & Design Mastery Bootcamp, offered by Udemy, is an extensive course that covers various software design principles, including SOLID principles. This bootcamp provides a comprehensive understanding of software design patterns, architectural styles, and SOLID principles’ role in designing robust systems. By the end of this course, students will possess a well-rounded understanding of SOLID principles and their practical implications in software architecture.


In today’s competitive software development industry, mastering SOLID principles is essential for building high-quality, maintainable software. The ten online courses and certifications mentioned in this article offer valuable insights, practical examples, and hands-on exercises to facilitate the understanding and application of SOLID principles. Whether you are a beginner or an experienced developer looking to enhance your skills, these courses provide a structured and comprehensive approach to learning SOLID principles. Invest your time in these courses, and you’ll be well on your way to becoming a more proficient and sought-after software developer.