Founding Engineer = Engineer making under-market salary for tiny sliver of equity who can be laid off anytime because the company is fledgling, works 70hrs a we

Founding Engineer = Engineer making under-market salary for tiny sliver of equity who can be laid off anytime because the company is fledgling, works 70hrs a week, puts in major % of work a founder would contribute, but has little upside. To be honest, for someone who cant land market salaries (e.g. non typical background), who finds a good team, this might be a good opportunity.