A multicriteria decision-making methodology is proposed for decision making in systems engineering. A process is proposed for generating weights for evaluation criteria needed to evaluate design alternatives. A decision-maker classification is proposed based on the roles they play during the decision process. In order to accomplish this, in the first step, stakeholders' categorization is made, and their corresponding weights are determined representing their stake in decision. In the next step, each stakeholders' preference over the criteria set is determined, which leads to the ordinal rankings of the criteria for each stakeholder. In the following step, the stakeholders' criteria ordinal rankings are transformed into cardinal weights using the different decreasing utility functions. Thus, obtained final criteria weights are used for evaluation of the alternative design solutions. Optimality check measures are devised to select the appropriate decreasing utility functions.