I recommend getting clear guidance from your supervisor on what 'tech lead' means to them. A lot of the commenters here think tech lead is a management position however you shouldn't assume that your employer has that same view. It doesn't sound like you are a 'team lead' otherwise your position would be called 'team lead' and not 'tech lead'. Therefore you don't have any real control over what anyone does, you can't make people do things, and you will be responsible for leading the tech, so you can't really delegate that away to individual contributors. Good luck.
Yes tech lead in my experience is a BS non title invented to keep the most productive rank and file developers feel like their careers are going somewhere. It's extra responsibility and expectations with no additional empowerment
Exactly. Tech lead is the worst role I've had. It's like make believe manager, you get a bunch of extra supervisory work in addition to your regular work, but no actual authority to do anything about problems, other than stay late make up for the problems yourself.
You get bombarded by everyone outside your org who has a question vaguely related, and by your junior devs for anything they don't want to figure out themselves, and by your manager wanting to know whether we can release this half baked component X to some other team even though it will break production. You get maybe a little extra recognition but it's just not worth the 3x extra work.
