1) The biggest hurdle in most cases is communication, especially in meetings. That being said, I still do fine in them, because I rely on lip reading as well as vocal cues/context, but I also rely on my coworkers to be understanding from time to time, and they are.
2) Slack has been hugely beneficial to me, but it requires the organization to be engaged with it.
3) I have accented speech because I drop some consonants (f and s sounds mostly), and it can be a challenge for some to clearly understand me shortly after meeting me. This usually resolves itself after 2-3 weeks.
4) Job interviews: I'm always up front about what I can and can't do - this usually comes up around the topic of phone interviews, I can't do them. People appreciate this, and I make it clear that I'm not ashamed or hindered by my disability. The confidence goes a long way. If you come off unsure, then of course others will be unsure. I've definitely had interviews where there was a communication disconnect, but typically that comes along with other circumstances that make the job a poor fit. I've never had the situation where the job/culture/people fit was there but it didn't happen because of a communication issue.
For other deaf developers out there, just own it and show that there is no hurdle out there that you can't overcome, and you will be successful. Always be trying to help others and others will help you in return.