Some of the strangest job titles have been revealed, including Customer Happiness Hero and Genius.

Glassdoor said a study of thousands of vacancies on its site showed some interesting jobs as well as more traditional roles.

Among the weirdest were:

n Tug Master – responsible for safe operations of a tug vessel.

n Econometrician – type of economist who integrates statistics and maths.

n Customer Happiness Hero – customer service job with a fancy name.

n Genius – troubleshooter at Apple stores.

n Scrum Master – facilitator for a development team.

A Glassdoor spokesman said: 'We all have a pretty good idea what a finance manager, HR manager, electrical engineer and graphic designer does, but some jobs are a bit more niche, with weird and wonderful job titles that would have most people scratching their head to work out what the job actually is.'