Technology brings efficiency and brings jobs. Say entire tech sector, software developers and IT get fully automated - well, now all the VALUABLE services those companies provide are much much cheaper. All the savings are passed on to their customers (B2b and B2c) who will now spend those savings doing things they couldn't afford to before - and THOSE industries are where jobs will move to.
For a more simplistic example, imagine cost of electricity (or some raw materials) dropped 10x, would it lead to fewer jobs or more jobs? Of course more jobs, since you'll be able to do a lot more now.