Andrey Tikhomirov developed a feature for the Bim4Everyone/RevitPlugins repository that improved tag placement accuracy in multi-level Revit projects. He enhanced the Apartment class and centralized room-selection logic within the RevitRepository, enabling selection of rooms by maximum area or specific names across all relevant levels. This approach addressed a cross-level room-selection issue that previously led to inconsistent tagging, reducing manual corrections and streamlining workflows for multi-story models. The work demonstrated depth in BIM development and multi-level data handling, utilizing C# and the Revit API, and incorporated repository pattern principles to improve maintainability and consistency in tag placement strategies.