The technical director is king in modern Formula 1. Once, it was the designer who was given the credit, or blame, for the car's success or failure. Now, it is the technical director who is celebrated or denigrated for a team's on-track achievement.
Grand prix teams are now massive organisations comprising multiple departments collectively responsible for putting the car - which is made up of more than 6000 parts - on track. The technical director is the conductor of this vast technological orchestra.
No two teams are the same in size, structure, budget, facilities or management roles, so it would be a mistake to believe that there was such thing as a 'typical' technical director.