I recently switched to salary, and my workload exploded. Suddenly, everything is "urgent," so I'm working 2–3 hours of unpaid overtime at home every night. The company is billing the client for my extra hours, but I'm not seeing any of it. How do I bring this up with management? I'd rather not keep working for free.

What engineering discipline would you recommend new students specialize in (or avoid) given the current/future job market?

I'm a junior engineer, but I inherited a project mid-construction because the designer left. I wasn't around for the early phases, but now I’m running the site meetings. I'm stressed about the technical gap and being asked questions I don't know the answers to. I don't want to appear clueless in front of the clients, even though I am. Is it okay to say that I don't know, but I will get back to them? Or does that look unprofessional?

What was the biggest mistake you made early in your career that ended up teaching you a valuable lesson? One of mine was assuming everyone interpreted requirements the same way I did. Learning to ask clarifying questions saved me from a lot of rework. What’s yours?

I'm a senior IC with over six years at my company, and nearing the end of my career. There are only two others at my level in our department. When I resign, how much notice is appropriate? Also, does it make a difference if I'm resigning for early retirement versus moving to a competitor?