IT project management is a combination of traditional project management concepts with a working cycle of information technology systems. The success of an IT project requires strong cooperation and communication between members of the project team. Variables that can affect teamwork quality (TWQ) should be applied to obtain effective teamwork. The variables are communication, coordination, equal contribution of members, mutual support, effort, and team cohesion. Teamwork quality dimensions will be used as a reference for making questionnaires that will be distributed to respondents. In this study, the questionnaires were distributed to two software development companies. The questionnaires are processed by applying Analytical Hierarchy Process (AHP) method. The finding is mutual support has the biggest Eigen factor that influence Teamwork quality. Mutual support means a The ability and willingness of team members to assist each other in carrying out their duties. Having the same goals and good team bonding and relationship