noun
Definition 1
Person responsible for carrying out secretarial duties, usually in a private or investment banking concern where the use of traditional job titles is considered a selling point. The term 'float' comes from the bank float, but a float secretary's duties these days usually extend beyond keeping track of the float.
Source: Invertext
Context: As a float secretary you will provide support to various bankers at all levels - with lots of variety, this is a fantastic opportunity for you to gain an overall understanding of the business.
Source: jobs.guardian.co.uk