You don't plan what you don't control, you don't control what you don't own. For the vast majority (yes, including engineers), the only thing we own that is a part of the whole process of capitalist production is our ability to do some kind of work. When that ability is sold (for a wage/salary) to whoever possesses the resources to decide the why, we forego the right to decide how it's used. Just like when you sell someone a chair for example, you don't get to tell them where and how they can use that chair.
You can refuse to get or do this or that job, but you need to have a job. At the end of the day, we all need food and shelter to stay alive and the bills aren't gonna pay themselves. So ultimately, someone—among the vast majority of us who don't have a choice—will also have to do the job you refuse. So we shouldn't delude ourselves into thinking we have some sort of "superpower". We don't. That is, not unless we can collectively withold our ability to work and force the hand of the minority that actually decides why things are done.
A society where those who do the work decide why and how it's done, is a society where the working people own the resources. That is communism. That world is possible, but it won't build itself, you have to tirelessly fight for it. Look over at marxist dot com if you want to help out [1].
That doesn't mean that in the meantime we shouldn't strive to find meaningful work that fit with our values. We should, and whoever manages to find that good for you! You've been lucky (for now) but you won't be forever, and even if you are to be, the vast majority of people with pretty much the same skills and conditions as you, actually won't. We actually have to transform society if we want to secure that for ourselves and for everyone else.