With the caveat that there isn't enough information:
I think that an office dress in your preferred style or smart trousers and a blouse/top would cover most business meetings. Comfortable shoes if you're presenting, definitely. And a suitable cardigan/blazer if the temp is likely to be lower than you'd prefer.
For tech meetings, where office wear is more fluid, smart dark jeans with a colourful blouse or geeky (but clean/non-holey) tee/hoody, maybe with fashion-y sneakers? As long as you're wearing items that suits/fit your body shape, there's a lot you can get away with in techy circles that normally wouldn't fly in an office.
Maybe a scarf/necklace/stand-out earrings to brighten the outfit if needed? Geeky items, if they're small/not as obvious, can work even in a conservative office culture - I have a pair of Captain America's shield stud earrings, but you have to be standing right next to me to realise that's what they actually are, because from a distance they just look like colourful studs!
