The Importance of Software Engineering in Web Applications: Understanding the Dangers of Vibe Coding and Poor Development Practices
Introduction
Web applications have become an important part of our everyday lives. People use them for online banking, shopping, education, communication, business and many other activities. Because these applications handle important information and services, they must be developed carefully to ensure that they are secure, reliable, efficient and easy to maintain.
Software engineering plays an important role in the development of web applications. It provides a systematic approach to planning, designing, developing, testing and maintaining software. However, with the introduction of Artificial Intelligence (AI) coding tools, a new approach known as “vibe coding” has become popular. Although vibe coding makes it possible to generate code quickly using simple instructions, relying on it without understanding or reviewing the code can create serious problems.
This article explains the importance of software engineering in web application development and highlights the dangers of vibe coding and developing applications without proper software engineering practices.
- What Is Software Engineering?
Software engineering is the systematic process of designing, developing, testing, deploying and maintaining software applications.
It involves applying engineering principles and techniques to ensure that software meets users’ needs and performs as expected.
Some important software engineering activities include:
- Requirement analysis: Understanding what users need from the application.
- System design: Planning how the application will work and how its different components will interact.
- Implementation: Writing and organizing the program code.
- Testing: Checking the application to identify errors and security weaknesses.
- Deployment: Making the application available to users.
- Maintenance: Updating the application, fixing problems and improving its performance.
These activities help developers produce applications that are dependable and suitable for real-world use.
- The Relevance of Software Engineering in Web Applications
Software engineering is important in web application development for several reasons.
a. Improved Security
Web applications often store personal information, passwords, financial records and other sensitive data. Software engineering encourages developers to include security measures during every stage of development.
Proper security practices help prevent unauthorized access, data theft, injection attacks and other cyber threats.
The OWASP Top 10 (2025) identifies major web application security risks, including broken access control, security misconfiguration, software supply chain failures and injection.
b. Reliability and Quality
A good web application should work correctly and consistently. Software engineering encourages developers to test applications before releasing them.
Testing helps identify errors, broken features and unexpected behaviour before users experience them.
c. Easy Maintenance
Web applications need regular updates and improvements. When developers follow proper coding standards and organize their code, other developers can understand, modify and maintain the application more easily.
d. Better User Experience
Software engineering ensures that developers consider users’ needs when designing applications. This helps create websites and applications that are easy to navigate, responsive and user-friendly.
e. Reduced Development Costs
Identifying problems early is usually less expensive than fixing major failures after an application has been released. Proper planning, documentation and testing can reduce unnecessary expenses and save development time.
- Understanding Vibe Coding
Vibe coding is an approach to software development in which a person uses artificial intelligence tools to generate code by describing what they want in ordinary language.
For example, someone may tell an AI tool:
“Create a login page with a username, password and login button.”
The AI then generates the code needed to build that feature.
Vibe coding can help beginners, students and experienced developers work faster. It can also make programming more accessible to people who have limited coding experience.
However, the major problem occurs when developers accept AI-generated code without understanding how it works, checking its security or testing its functionality.
AI can generate code that looks correct but contains hidden errors and security weaknesses.
- Dangers and Demerits of Vibe Coding
Although vibe coding has advantages, it also introduces several risks.
a. Security Vulnerabilities
AI-generated code may contain weak authentication, poor access control, insecure database queries or exposed sensitive information.
For example, an AI tool may generate a login system that allows users to access information belonging to other users because proper authorization checks were not implemented.
b. Incorrect or Unreliable Code
AI tools do not always produce correct solutions. They may generate code that contains errors, uses outdated methods or does not work properly in every situation.
If developers do not review and test the code, these errors may affect the entire application.
c. Poor Code Understanding
When developers depend completely on AI to write their programs, they may fail to understand how the application works.
This becomes a problem when errors occur because they may not know how to identify or correct the source of the problem.
d. Difficulty Maintaining Applications
AI-generated code may contain unnecessary repetition, poor organization and inconsistent programming practices.
As the application becomes larger, modifying and maintaining such code can become difficult.
e. Privacy and Data Protection Risks
Developers may accidentally expose passwords, API keys, database credentials or private user information when using AI tools carelessly.
Sensitive information should never be shared with AI tools without checking the organization’s security and privacy requirements.
f. Dangerous Software Dependencies
AI coding tools may suggest incorrect or untrusted software packages. Installing such packages without verification can expose an application to supply chain attacks and malicious code.
Therefore, developers must verify the origin and safety of software dependencies before using them.
- Problems of Developing Web Applications Without Software Engineering Practices
Developing a web application without following software engineering principles can result in serious technical and business problems.
Some of these problems include:
- Poor requirements: Developers may misunderstand what users need, resulting in an application that does not solve the intended problem.
- Lack of proper planning: Without planning and system design, the application may have a weak structure and become difficult to expand.
- Frequent system failures: Applications that are not properly tested may crash, freeze or produce incorrect results.
- Security breaches: Ignoring security during development can expose users’ personal information to attackers.
- Poor performance: An application may load slowly or fail when many people use it at the same time.
- High maintenance costs: Poorly organized code makes troubleshooting and updating the application more difficult and expensive.
- Loss of user trust: When an application repeatedly fails or exposes users’ information, people may stop using it.
For example, imagine an online banking application developed without proper software engineering practices. If the developers fail to implement strong authentication and access control, an unauthorized person could gain access to another customer’s account. This could lead to financial losses and damage the bank’s reputation.
- How to Reduce the Risks of Vibe Coding
AI coding tools should not necessarily be avoided. Instead, they should be used responsibly and combined with proper software engineering practices.
Developers should:
- Understand the code generated by AI before using it.
- Review the code for errors and security weaknesses.
- Test every important feature before deployment.
- Follow secure coding standards.
- Protect passwords, API keys and sensitive information.
- Verify third-party libraries and software dependencies.
- Use version control systems such as Git to track changes.
- Document important parts of the application.
- Perform regular maintenance and security updates.
- Involve experienced developers when working on sensitive or complex applications.
The National Institute of Standards and Technology (NIST) provides a Secure Software Development Framework (SSDF) that encourages organizations to integrate security into their software development processes.
These practices help reduce vulnerabilities and improve the quality of software applications.
- Conclusion
Software engineering is essential in modern web application development because it helps developers build applications that are secure, reliable, efficient, user-friendly and easy to maintain.
Although vibe coding has made software development faster and more accessible, it should not replace the knowledge, planning, testing and security practices required in professional software engineering.
Developing applications without proper software engineering principles can result in security vulnerabilities, system failures, poor performance, high maintenance costs and loss of user trust.
Therefore, the best approach is to use AI as an assistant rather than allowing it to replace the developer’s responsibility. A successful web application should not only look good or work temporarily; it should also be secure, reliable and sustainable in the long term.
References
- OWASP Foundation. (2025). OWASP Top 10: The Ten Most Critical Web Application Security Risks. https://owasp.org/Top10/
- National Institute of Standards and Technology. (2022). Secure Software Development Framework (SSDF), Version 1.1. https://csrc.nist.gov/pubs/sp/800/218/final
- Canadian Centre for Cyber Security. (2026). Managing security risks in vibe coding. https://www.cyber.gc.ca/en/guidance/managing-security-risks-vibe-coding-itsm60043
