Are you doing math and design type work now? And are you young?
If not, it may be difficult to just walk into it elsewhere....just sayin.
Did your college tutor not recomend you for that kind of work when you left college?.....if not, then as i discussed, it may be difficult to suddenly get into it..but you never know.....try your luck on the job boards.
Why not build your own off grid inverter. Make it super long life by using the el caps an a way that garantees them long life...and make the fans failure proof by having them easily removeable....ie, make it more original than the stuff thats getting imported....then when youve done it, put it on your cv.....some company doing that will likely come after you.
But remember, most of the design of this kind of stuff is done in the Far east now....and your country's middle men will be importing the kit, and making themselves a fortune in the process......and gazzumping you (and me) out of a job.
I once took a job in a battery/solar company...but all the electronics and inverters etc was all just imported from Taiwan/China.
By the way, i'm actually working on a 5kW Inverter now to output mains. Give me a shout if you want to see some of the sims. The output current range , and output power range, is very large, and this gives challenges for the PWM control circuitry. I also intend to adapt this for off grid.
I think the control may need to be software for the fet switching...but i wonder how far i can get with a switchable/reconfigurable_on_the_fly analog solution