I've been at my current position about nine months. I have the chance to negotiate my pay soon and I want to know how to decide what my job is worth.
I'm doing a mix between software engineering, signal processing, and audio engineering. It's a complex job and requires a good understanding of all those fields. I have been training my coworkers for 9 months now and they are still barely grasping how to run and develop the systems in the lab.
I'm looking for advice that doesn't need to be specific to this role. It's more about how to value a job that has multiple roles involved and is pretty difficult. How can I decide what this job is worth? Should I value it based on the most valuable role, or is there some better metric to use?