Which part of the world are you located? When you say 40 interviews, do you mean 40 separate companies? You probably need to get your interview behavior evalu

Which part of the world are you located? When you say 40 interviews, do you mean 40 separate companies? You probably need to get your interview behavior evaluated by a friend or someone else. Either your technical chops are not good, or you're giving off the wrong vibe. Maybe get rid of Technical Lead off your resume and shoot for a lower-level position, and see how you do.