Essentially, working as a consultant means providing professional, expert advice in a particular field. Thus, consultants are found in a wide range of sectors, from health to management; from acoustics to recruitment; and, from IT to logistics.
Usually consultants are very experienced people who have had successful careers in a variety of roles and therefore have acquired wide-ranging knowledge about their sector.
The role is an advisory one and is often focused on problem solving or providing bespoke solutions to clients. Some consultants are self-employed, operating as freelance workers across a number of different organizations, while others are retained permanently by employers.