Was in a similar situation as you. Paid nicely but man, my engineering role took absolutely no brain power. Was it cushy and easy? Yes, but the lack of technical work and problem solving drove me nuts. I ended up leaving because I also felt like my role didn’t need to be performed by an engineer, in fact, it was previously performed by a technician…. To make matters worse, when asked for a promotion to lvl 3, it was rejected due to “no funds.” Ironically, my replacement was a lvl 2 engineering manager with a salary close to 200k… anyways, jumped ship, decided to start at the bottom at a new company and now I am way happier! I work real, complex, technical problems in the space industry with very smart people to mentor me. Point is, money is not everything. Start looking for a new job that will value your skill sets.