See also: Design | Programmer | The Software Cycle
A developer creates computer programs. Developers are not always hardcore programmers - they can also design the way the software system will be put together.
Most software is written by groups of developers that include programmers, software engineers and system analysts (each respectively further from the core source code level of development).
If a software developer is held responsible for the users activities, it may have a Chilling Effect, outside of the jurisdiction of the court or justice system which finds blame.