Your job as a leader of technical people is to make sure that your people are equipped to handle their work. You make sure they have the tools they need, and if they don't, you order them. You make sure they know about the latest technology and processes, so you send them to conferences. But what about their ability to convey ideas, arouse enthusiasm, and encourage others?
Yes, that's right. I'm talking about the ability to deal with people. As the leader of a tech team, the most significant way you can serve your team is by providing them with a steady stream of tools and tips on how to communicate effectively, give a sense of safety within the team, and build each other up. If this building block does not exist, teams either remain marginal or break down quickly.
This entire concept is why Dale Carnegie wrote that "15 percent of one's financial success is due to one's technical knowledge and about 85 percent is due to skill in human engineering." If you get the culture right by equipping your people, you are positioned to prevent losses of time through ineffective communication, bad workplace relationships, or any other malady that may strike your team dynamics.
Here are some resources that might serve you well on this journey.
I have personally benefitted from each of those and have witnessed how they can transform teams into highly-effective groups of individuals.