Describe the structure and main roles of your team, and also tell about your personal contribution.

My team usually has the following roles:

• Developers — write and maintain code.
• Testers (QA) — ensure product quality.
• Technical Lead — responsible for architecture and technical decisions.
• Project Manager — coordinate tasks and deadlines.

My personal contribution involved developing key modules in C/C++, optimizing performance, and writing unit tests. I also participated in code reviews and helped implement best development practices.