This chapter investigates the skills development practices and their relationship with engineer turnover in IT services companies (henceforth ITSC) from Tunisia. It presents a qualitative analysis of data that derived from a number of interviews conducted with human resource managers of these companies. Based on the findings, four human resources management (HRM) practices were identified that seemingly contribute to skills development in the firms investigated, which are recruitment, training, inter-project mobility, inter-firm cooperation. The findings indicate that these practices can also reduce engineer turnover rates. The chapter provides fresh insights into HRM practices of Tunisian companies, which has not attracted much attention yet.