Lower back and neck pain help!

The issue lies in my posture. From a side profile, my head and neck create this awkward angle against my torso; my head sits too far forward from where it ought to be. It’s causing constant tension in my neck and shoulders. I’m fairly tall—about 6'1"—and I spend a massive amount of time hunched over a computer. I'm in my mid-30s.
Can this actually be fixed? Should I look into specific exercises, or perhaps an orthopedic pillow?