This study examines the mediating role of firm innovation capabilities as a strategic choice for Russian small and medium-sized enterprises (SMEs), which translates their managerial and worker human capital stocks into enhanced firm performance. The results of a survey conducted on 366 CEOs and business founders indicate innovation capabilities are the intermediate variable between firm human capital and SME performance. Further parallel mediation regression analysis demonstrates that human capital is positively and significantly related to all innovation capability dimensions (client-, marketing- and technology-focused); however, the mediation effect is significant only in the case of client-focused innovation capability–SMEs’ ability to provide clients with services that offer unique benefits, solve clients’ problems in innovative ways and seek out novel ways to tackle problems. These findings suggest that SMEs operating in turbulent transition economy environments can be more innovative and achieve the best performance using intangible, highly valuable and rare talent resources.