Ask yourself why the programmer ever does anything to his program. He is responding to the suggestions of the users, his employer, benchmarking of competitors' programs, market studies, Computer science journals, etc., etc. These are the selection pressures. He is just the guy that does for the computer code what it cannot yet do for itself (i.e., produce descendants with modification). Those codes that work and are profitable are copied and used until they are replaced by better ones. This is an evolutionary process that depends on lots of shared information from lots of sources. There is no one all knowing programmer (Bill Gates notwithstanding) directing the development of programs. Most are copycats working with simple algorithms and effecting rather unimportant changes (witness the proliferation of games).
In fact, every programmer's own brain is a kind of a computer with a program of its own. About two million years ago in human evolution the brain began to be capable of storing more information than the genome. From that point cultural evolution began its ascent leading eventually to this moment where our two brains are clearly possessed of widely divergent sets of program instructions. Both are functional but one clearly has mistakes which need correcting. Fortunately there are vast libraries of scientific literature available to effect a significant programming improvement should you be so interested.
No, there was a program before there was ever a first user. Clearly programmers can design something without an external selection process, but the same can't be said of evolutionary theory.
" ...This is an evolutionary process that depends on lots of shared information from lots of sources."
No, it is an intelligently controlled process that functions in a way that evolution would work if evolutionary theory could be applied to either human programming or DNA coding.