Yes if you specialize in a specific technology. Not as much if you specialize in something more fundamental like audio DSP. you may have to jump between telephony and pro audio as the markets change, but there will always be work. And the barrier to entry is quite high.
Your working conditions and pay don't depend on how bad ass your specialty sounds, or how technically complicated the work is. They depend on the total supply of people who can do the work compared to the total amount of work that needs doing.
