I have been working the last two years on software for a small aerospace company, but recently decided to look around at what other options are out there. I recently got a great offer from a series C startup that ticks most all my boxes on paper: Good pay, unlimited PTO, remote work, and a technical concept I feel like I can get behind. They are about half the size of my current employer at about 50 people.
The issue is that I am a pretty risk averse person, which is compounded by being responsible for providing health coverage for my spouse while they are a graduate student. In this case, they are on a long term maintenance medication that without insurance and assistance from the drug company, would cost about $80k annually. As an added bonus, if they go off the medication, their body will likely adapt, meaning that it will no longer be effective even if they resume treatment, so suffice to say that interruptions to health coverage and income are something I am trying to avoid.
With that in mind, is it likely that any startup is going to be low risk enough for me to tolerate? How can I get a sense of that when they are a private company? I would also appreciate general insight from those with experience working in startups.