First off, a suggestion: leave. It's not worth staying in a toxic environment full stop. On to your questions: 1. Self-confidence is fine, as is the expectatio

First off, a suggestion: leave. It's not worth staying in a toxic environment full stop. On to your questions: 1. Self-confidence is fine, as is the expectation that you will receive mentoring, especially if it has been made known that you are lacking in experience. In your immediate situation, ask open questions after trying to figure it out yourself, and be firm in the knowledge that there is NOT an expectation upon you to know all this stuff already. Some of the best engineers I know ask dumb questions all the time. It is expected, outside your area of expertise, and healthy. As a junior your area of expertise is... minimal. 2. Not in a good company, with strong leadership. Junior personnel are there to be molded and guided. You can expect to be set problems outside your comfort zone, but someone should be stepping in at some point to lend a hand. 3. Absolutely not. In my experience, supposed rock-stars with shitty attitudes are not as good as they think they are. Poor attitude is often a cover for ineptitude and/or severe self-esteem problems. People who are genuinely good are usually willing to help someone who can show that they are motivated, and not wasting their time.