Data scientists are the happiest workers, according to this data...

"Data scientist" may not sound the most glamorous of jobs, but according to a survey by US recruitment website Glassdoor, it is the career which offers the best work-life balance.

Using a scale of one to five, the results are based entirely on employee feedback over the past year:

1. Data scientist 4.4

2. SEO specialist 4.3

3. Tour guide 4.3

4. Lifeguard 4.3

5. Social media manager 4.3

6. Group fitness instructor 4.2

7. User experience designer 4.2

8. Corporate communications 4.1

9. Firefighter 4.1

10. Equity trader 4.0