Make up a character notebook
After awhile, you'll have a great collection of the nuances in your characters. Like the fact that Jake Domain finished high school early, before he went on found his synthetic emotions corporation. You might be surprised, like I was, that scenes can emerge from thinking about what your characters yearn for, want more than anything else.
What you want out of this work is to know these people, as if you've been their friend, boss, or lover for a long time. The further you get into this work, the more your characters talk to you as you write. Put them in a situation, and what they're likely to do and say becomes more obvious.