What professional challenge did you have to overcome that you consider particularly difficult?

One of the challenging professional tasks is working with outdated or poorly documented code, especially when you need to make quick changes without breaking existing logic. In such situations, it is important to:

• Carefully study the current code and understand its architecture.
• Write tests to capture the current behavior.
• Implement changes gradually, verifying at each step.

For example, in one project, I had to refactor a complex module without documentation. I first wrote unit tests to ensure that the changes did not break functionality, and then gradually improved the code structure.

This approach helps reduce risks and improve code quality.