I would recommend applying for other jobs that fit your skill set, go to a couple of interviews. After you have gone to a couple of interviews do a comparison o

I would recommend applying for other jobs that fit your skill set, go to a couple of interviews. After you have gone to a couple of interviews do a comparison of the pros and cons of each job to see which one benefits you the best in the short and long term in terms of financially, learning potential, growth potential, commute time, investment opportunities, team work and anything else that you believe is important. In the interviews ask to speak with other people on the team so you can make sure you will actually be doing embedded software development and not just a manager or someone that does not do the work. As a manager may not always know what is truly involved in the job asking the people doing the work normally yields more information for you to work with. In terms of how to explain this on your CV, you do not do this on your resume, but do this in interviews. Normally you just tell the truth by saying the work being done did was more business software development than embedded software development. Don't be afraid to give your notice after you have accepted a job that is more in line with what you want to do. Just make sure you stay professional so you do not burn any bridges.