This research paper tries to explain the effect organizational culture in the GIZ-Ethiopiarnoffice has on the job performance of employees. It tries to assess the link between the differentrnidentified traits of organizational culture and the key performance indicators of the organizationrnwhich allows us to establish the fact that the effect indeed exists in the company. The paper adoptsrnexplanatory research with qualitative research approach to find details about this link. The caserncompany chosen is GIZ- Ethiopia office which is one of the non- governmental organizationsrnoperating in Ethiopia. The company provides the ideal background for the research since itrnattempts to integrate different working practices for the attainment of its goals. The researchrnadopted the Denison (1990) dimensions of organizational culture (involvement, mission,rnadaptability, and consistency) to assess organizational culture practiced in the company. Thernstudy took 205 candidates as a sample size from which 155 of them actually responded to thernsurveys. As per the findings the research established that there is a significant positivernrelationship between the two of the four organizational sub-dimensions used. These subdimensionsrnare adaptability and involvement. The research in general tries to assess therncomponents of organizational culture in the company and those components of the organizationalrnculture who have a dominant effect on job performance. Based on the findings of the researchrnbasic recommendations such as; GIZ needs to take advantage of the high degree ofrnorganizational culture in the company and use it to the betterment of employee performance, thernmanagement should also be able to identify other elements affecting job performance in additionrnto Organizational Culture, are given