Abstract: An objective performance evaluation engine collects one or more requirements from a customer and developing functional design specifications and creates a set of sub-tasks and assigning the sub-tasks to individual developers. Each developer implements code changes required for the sub-task and delivers the code changes with comments into a code repository. The objective performance evaluation engine generates an implementation benchmark ownership data structure for the code changes and calculates positive impact on performance evaluation based on a comparison of actual effort to implement the code changes versus estimated effort for the sub-task. Responsive to quality assurance detecting a defect in the code changes, the objective performance evaluation engine identifies an owner of the defect by looking up in the implementation benchmark ownership data structure and calculates negative impact on performance evaluation based on a severity of the defect.