Describe your experience working in previous companies and your main responsibilities in these positions.

In previous companies, I was involved in developing and maintaining web applications using Python. My main responsibilities included:

• Developing server-side logic using Django and Flask frameworks.
• Working with databases (PostgreSQL, MySQL), writing queries, and optimization.
• Integrating with external APIs and services.
• Writing unit tests to ensure code quality.
• Participating in code reviews and architecture discussions.

For example, in one project, I implemented an authentication system using JWT, which improved security and user convenience.