The prominent shifts towards greater flexibility in work arrangements as well as in organizational forms have had profound effects on the labor market for engineers, and given rise to the technical consulting industry. The technical consulting firm is becoming increasingly important in many technology-based industries, as a growing number of technology-based firms rely on technical consulting firms to produce their outputs. In that respect, the technical consulting firm is an important actor for the organization and development of engineering knowledge, as well as for the transfer of knowledge to and among technology-based firms. However, despite its growing importance, the technical consulting firm has received scant scholarly attention. Hence, the purpose of this thesis is to enhance the understanding of the roles of the technical consulting firm and the technical consultants for the transfer of knowledge among problem-solving contexts and client organizations. This thesis is comprised of a compilation of three papers and an extended summary. It draws upon a qualitative single-case study in one of Scandinavia’s leading technical consulting firms. This thesis takes a multilevel perspective, and utilizes an embedded case study design to study both the organizational and the individual level of analysis. In total, it builds on 54 interviews with managers and consultants, 14 observations of a competence development program for engineers who are in the beginning of their careers as technical consultants, and 2 workshops with managers. This thesis identifies two primary capabilities, developed through the interaction between the firm and the individual level: swift transition and knowledge cycling. The findings indicate that the link between the respective capabilities creates the foundation for the successful organization of engineering knowledge. Hence, these capabilities illustrate that the technical consulting firm has other roles to play than merely solving the problem of numerical and functional flexibility. Moreover, this thesis develops the process of knowledge cycling. The knowledge cycling process addresses the role of the individual consultant in the transfer of knowledge within and among problem-solving contexts, and consists of three distinct knowledge processes found prominent during the different phases of a consulting assignment: (1) knowledge acquisition, (2) knowledge integration, and (3) knowledge transfer. Furthermore, this thesis provides insight into how formal training affects the technical consultants’ ability to transfer knowledge. The findings suggest that this ability is developed through a three-stage process: (1) identifying the core of an assignment, (2) broadening the scope of action, and (3) becoming more self-confident in the role of consultant.