someone whose job is to study or examine something in detail, in order to discover or understand more about it and often to make predictions (= statements about what will happen in the future) relating to it. Who is he?

a person who does their job in an office rather than in a factory, etc.

someone in a high position, especially in business, who makes decisions and puts them into action. What does he do?

Her job is to design or build machines, engines, or electrical equipment, or things such as roads, railways, or bridges, using scientific principles. What does she do?

someone whose job is to give advice to people about the law and speak for them in court. What does she do?

someone whose job is examining people's eyes and selling glasses or contact lenses to correct sight problems. Who is she?

She advises people on a particular subject. Who is she?

a person whose job is to design new buildings and make certain that they are built correctly. Who is she?

Her job is to receive and pay out money in a shop, bank, restaurant, etc. What does she do?

someone who keeps or examines the records of money received, paid, and owed by a company or person. What does he do?

a manager of an organization, company, college, etc. What does he do?

a person who is learning and practising the skills of a particular job. Who is he?