Engineering Mindset Evolution

I'm a backend software developer looking for a new role. My experience is with Golang, Docker, and AWS ECS containerization. Help me understand the best way to answer the following interview questions: 1. Could you tell us about a time when you had to solve a complex problem with a simple solution? Describe the context, the situation you were in, the steps you took to deal with it, and the outcome. It would be helpful if you can explain this in a way that non-technical people can follow and understand it. 2. Could you tell us about your involvement with product, and a time when you were able to influence or directly make a decision that was product-related?