After studying business administration, Hans-Joachim Gruneck began his career as a sales manager at a Japanese consumer electronics manufacturer in Düsseldorf. There he achieved strategically sustainable sales success. He later moved to a leading mobile communications company in Frankfurt, where he deepened his specialist knowledge in the mobile communications sector. As branch manager at a mobile communications service provider, he expanded his management skills and mastered strategic challenges. An important career step was his appointment as managing director of a consumer electronics manufacturer in Frankfurt. Under his leadership, the company strengthened its market position. His career as managing director then took him to a US manufacturer in New York, where he gained international experience. After returning to Germany, he worked as a consultant for a Korean market leader in Frankfurt. His profile is rounded off with certification in the field of personnel diagnostics, personnel consulting (CERC/BDU) and as a BVMW-certified consultant for medium-sized companies.