I look for a company that doesn't make me sign all of my rights away.
I recently had a job offer I accepted, but after seeing the fine print, I had to tell them I couldn't work there.
They wanted me to sign away all rights to all inventions I'd ever made in the past, while I would have been working there, and six months into the future.
When I asked for a revision, they informed me that they expected my full time dedication to the company.
My suggestion was to limit the scope of surrendered inventions to those created on company time, using company resources or directly relating to company business.
So..
1. A morally acceptable company.
2. Rate of pay/ Salary.
3. Flexibility of work. flex hours, or work from home.
4. Workstation/laptop
5. Office lighting.
6. I don't care for open offices.