Have you had a case where your technical opinion differed from the lead's?

Yes, there was such a case. My technical opinion sometimes differed from the lead's opinion, for example, regarding the choice of architectural approach or library. In such situations, I try to argue my position by providing examples from experience, test results, or documentation data. If the lead remains firm in their opinion, I decide to follow the chosen course but continue to monitor the results and suggest adjustments if necessary. It is important to maintain respect and constructive dialogue so that the team moves forward effectively.