The article provides ten essential steps for building a secure web application from the perspective of a backend developer. These steps include using a secure framework, validating and sanitizing user input, implementing secure authentication and authorization, using HTTPS encryption, implementing least privilege access, using secure coding practices, implementing server-side validation, protecting against session hijacking, implementing security logging and monitoring, and staying up-to-date with security patches. By following these best practices, backend developers can ensure that their web application is secure and reliable, protecting it from potential security threats.