The objective of the study presented in this paper is to examine the effects of gender difference on the job satisfaction of information technology professionals in Poland, a transition economy. The necessary data is collected by a survey of 391 information technology professionals working in various regions of Poland. Several aspects of job satisfaction are investigated: satisfaction with pay, promotion, colleagues, supervision and work itself. The results indicate that women who work as information technology professionals in Poland are less satisfied than male colleagues with their compensation and promotion opportunities. Based on the findings, several promising research avenues related to this research are discussed.