[brudgers]

It sounds, to me, like the priority is to reduce the proportion of energy expended on the workplace. That doesn't necessarily require changing jobs [though depending on the specifics of a workplace it might]. Changing the proportion of your energy, may not even require reducing the time spent at work.

Assess the workplace culture. Is working on open source during work hours an option? Are training, conferences, etc. something that the company will pay for? Is reducing the time at work because of burnout something that would be supported?

Again, there's no generic answer across all workplaces. Keep in mind that switching jobs can just be a way of starting a new hero cycle to prove one's self to a new group of people. That's o.k. but it's better if a person is aware of it.

Good luck.