I don't know how long you've been doing this, but I've been continuously at it for almost 30 years now, and no matter where, there are challenging problems to s

I don't know how long you've been doing this, but I've been continuously at it for almost 30 years now, and no matter where, there are challenging problems to solve, particularly outside the "web app with a backend" family of products. Doing optical recognition of malformed chicken patties as they whiz by at 60mph on a conveyor belt sounds mundane, but it's a lot more fun than writing REST API's to a SQL backend. In your career, you will go through new and excited, then sort of bored, then you will find a niche that's both interesting to you, and that you're good at - you become an expert in something. At that point, you do as much of that as you can, and the sanitation engineering doesn't seem so bad when its directed at something interesting to you, especially when you work with colleagues who are better than you at something and challenge you professionally.