Didn't attend field-specific conferences during my PhD; how much of a disadvantage is it? During my mechanical engineering PhD, I was not able to go to my field specific conferences and had to go to diverse conferences. Thus, I couldn't interact with researchers directly in my field of research. As an introvert, it is very difficult for me to make connections or networks during conferences and events. So, I doubt that I could have done anything by going to field specific conferences either.

On top of that, I don't have anything on my CV to speak about my leadership qualities. I have done some volunteering work and judged a poster session during my PhD. I also have done some TA. But, apart from that, I have not done any organizing stuff.

I had earlier helped my advisor to write a grant and have been a reviewer in a journal. Since writing that grant, I have not received any opportunity to write a grant as my advisor has pivoted his research interests to other field quite different from mine. So, I don't have much experience in that too.

Excluding my publication record, as a PhD student about to submit my thesis, how much of a disadvantage am I in when applying for a future academic position?
People skills can be very important for an academic. We teach, we advise and guide students, we interact with colleagues. In lab sciences we often have to work closely with others. Collaboration, even in such fields as math, is very important today. Moreover, people will tend to ignore your ideas if you don't learn how to present them enthusiastically. 

However, that doesn't close you out if you are introverted. Even if you are very introverted. People skills are just that: skills. They can be learned and practiced. Many of the people you meet who have good people skills are actually introverted. 

I've mentioned how introverts can interact effectively in public in answer to other questions here, for example. 

Treat people skills just like any other skills that you need to learn. Start out slow, if necessary, but practice. Play the role of a confident somewhat extroverted person, even if you aren't.



This answer was provided for an earlier version of the question that was quite focused on effective strategies for introverts in academia.