Quality Department is one of the vital department in any Organisation.
The job profile basically involves performing quality checks of products or services produced by the organisation and also one can make an impact by residing in this department by improving the quality of product by their knowledge which inturn helps the organisation to improve it's brand image and you will definitely be recognised by the company.
Quality people can even plan for training programmers and suggest them to HR department in order to get certifications for the company. (Like TS16949- a technical specification for automobile sectors, the HR's would have very least idea about these kind of certifications many times).
With experience one can eventually get into top Management and apply quality functions to improve the business operations of the organisation.