Express.js Developer

- How do you manage error handling in an Express.js application?
- Can you explain middleware in Express.js and provide examples of custom middleware you have created?
- How do you handle authentication and authorization in an Express.js application?
- What are the differences between using `app.get()` and `app.post()` methods in Express.js?
- How do you manage configurations and environment variables in an Express.js project?
- Can you explain the concept of routing in Express.js and how you organize route handlers in larger applications?
- How do you implement file uploads and manage static assets in an Express.js application?
- What strategies do you use for optimizing performance in an Express.js application?
- Can you describe how you would integrate a database, such as MongoDB or PostgreSQL, with an Express.js application?
- How do you ensure security and protect an Express.js application from common vulnerabilities like SQL injection and cross-site scripting (XSS)?

- How would you design a middleware in Express.js to handle logging all incoming requests and responses for debugging purposes?
- Describe a challenging bug you encountered in an Express.js application and how you resolved it.
- How would you implement rate limiting in an Express.js application to prevent abuse of your APIs?
- Explain a creative solution you have used to manage and optimize session handling in an Express.js application.
- How would you structure an Express.js application to handle high concurrency and scalability issues?
- Describe a situation where you had to refactor an Express.js application for better performance. What strategies did you employ?
- How would you implement a custom error-handling middleware in an Express.js application to manage different types of errors?
- Can you walk me through the process of optimizing the performance of a particularly slow route in an Express.js application?
- How would you design an efficient and secure file upload feature in an Express.js application?
- Explain how you would integrate real-time communication (e.g., WebSockets) in an Express.js application to support live updates.

- Can you describe a time when you had to explain a technical concept related to Express.js to a non-technical team member? How did you approach it?
- How do you handle conflicts or disagreements within a development team, particularly when working with Express.js?
- Describe a situation where you had to collaborate with remote team members on an Express.js project. What tools and strategies did you use to ensure effective communication?
- How do you ensure that your Express.js code is readable and maintainable for other team members who might work on the project after you?
- Can you provide an example of how you have documented an Express.js project to facilitate better team understanding and onboarding?
- How do you approach giving and receiving feedback on your Express.js code during code reviews?
- Describe a scenario where you had to coordinate with front-end developers to integrate their work with your Express.js backend. How did you manage this collaboration?
- How do you ensure that your Express.js projects align with the overall goals and timelines of your team or organization?
- In what ways do you keep your team informed and updated about the progress or changes in an ongoing Express.js project?
- Can you recount an experience where clear communication significantly improved the outcome of an Express.js development task or project?

- Can you describe a project where you had to manage multiple tasks and resources? How did you prioritize and distribute work?
- How do you approach estimating the time and resources needed for an Express.js project?
- What strategies do you use to keep your projects on schedule and within budget?
- Explain how you handle project scope changes or unexpected challenges during an Express.js development cycle.
- How do you coordinate with other teams (e.g., front-end developers, UI/UX designers) during an Express.js project?
- Can you give an example of how you documented and tracked the progress of an Express.js application?
- How do you ensure code quality and performance throughout the project lifecycle?
- Describe a time when you had to onboard and manage new team members in the middle of an Express.js project.
- How do you allocate tasks among team members with varying skill levels in Express.js?
- What tools and techniques do you use for resource management and task tracking in your Express.js projects?

- Can you describe a situation where you had to make a decision that challenged your ethical principles while developing with Express.js?
- How do you ensure compliance with data protection regulations (e.g., GDPR, CCPA) in your Express.js applications?
- What steps do you take to ensure that your code does not expose potential security vulnerabilities (e.g., SQL injection, XSS) in Express.js?
- How do you handle the ethical responsibility of managing user authentication and authorization in an Express.js application?
- Can you discuss a time when you had to address an ethical issue related to code plagiarism or use of open-source libraries in your Express.js projects?
- How do you approach transparency and honesty in documenting and reporting technical debt or bugs in an Express.js application?
- What practices do you follow to ensure your Express.js code is accessible to all users, including those with disabilities, and why do you believe this is important?
- How do you balance the need for rapid development with the ethical implications of potentially cutting corners in your Express.js projects?
- Describe how you ensure proper licensing and attribution when using third-party modules or libraries in your Express.js applications.
- How would you react if asked to implement a feature in an Express.js project that you believe could be unethical or harmful to users?

- How do you stay up-to-date with the latest advancements and best practices in Express.js and JavaScript development?
- Can you provide an example of a recent technology or technique you learned that significantly improved your work?
- Describe a situation where you had to quickly adapt to a major change in your project. How did you handle it?
- How do you approach self-improvement and skill development in your personal time?
- What resources or communities do you engage with to enhance your knowledge and skills in Express.js?
- Can you discuss a time when you had to shift your focus from one technology stack to another? What strategies did you employ to make the transition smooth?
- How do you balance learning new technologies with completing your daily work responsibilities?
- Have you ever attended any conferences or workshops? How have they influenced your approach to development?
- Describe a project where you had to incorporate feedback and rapidly iterate on your solution. How did you ensure the changes were effectively implemented?
- How do you assess which new tools or frameworks to integrate into your development workflow?