Max & co-founder Sebastian Wieczorek started space tech company Zenno to solve the problem of running out of fuel in space. Their solution is to use superconducting magnets fuelled by solar power to provide fully autonomous positioning of satellites. After 7 years work, they have solved the problems of operating their technology in space. (And have now announced their first commercial partnerships.) When asked what part of this was hard, Max replies "all of it".

www.zenno.space