Hit the ground running

Negli annunci di lavoro spesso sono richiesti: able to hit the ground running e must have a muck in attitude. Ma cosa vogliono dire?  Monica.

To hit the ground running means to start work immediately and to get busy without a long period of training, briefing or preparation. It is a military term: paratroopers (soldiers with parachutes) who hit the ground running start running (and fighting) as soon as their parachute lands: they don’t stop or rest after their big jump. Instead they go straight into action.
To muck in means that you are an individual with good team spirit. To “muck in” literally means to share accommodation and food with other people, and help clean the house and do other domestic chores and generally work hard without complaining.