Automata-based programming considers program systems construction as finite state machines that demonstrate state-based behavior. This paper analyzes approaches to data structures and their realization in different programming paradigms. The requirements for automata style implementations are estimated for actual tasks. It is shown that automatabased algorithms need approaches beyond the standard object-oriented inheritance and polymorphism. The Liskov substitution principle is considered as an implementation base instead them. Data-oriented programming approach and in particular data and code separation form the backbone of the engine. The work describes the automata data structure and code-data interaction. The dynamically loaded modules...