Hanno Renner was 25 when he set up Personio, a software start-up looking to take the myriads of boring admin tasks and piles of paper out of human resources. Before he became a tech entrepreneur, Renner was a student at Germany’s Technical University of Munich, where he had a job as a skipper of sailing yachts. He found the inspiration to start Personio after one of his friends, who at the time was chief technology officer of a company with 100 employees, was having trouble organizing recruitment and payroll processes without any dedicated software.