developer I am 100% convinced that an everybody should start like a developer. Simply just do a real programming, get the hands dirty with a code. Who never does this, never understands ... sw designer designs some parts of a software application: DB tables, OOP classes and interfaces, test cases, re-factoring, framework integration and communication. Usually prepares the skeletons or the code templates and best practices for the developers technologist typically a kid playing always with a new toys, usually executes evaluations. Must be very fast learner with large technology overview. Curios, critical, technology evangelist consultant/specialist particular technology or process expert, very often supports more teams or companies tech writer clearly documents all aspect of a software product by leveraging appropriate tools and techniques integrator integrates all pieces of the system nicely together, also smoothly integrates a whole system with a customer's envir