Scope of Responsibilities Professional design and sizing of ventilation and air conditioning systems in accordance with relevant technical specifications and regulations Preparation of technical justifications, calculations, and system-specific concepts for ventilation solutions 3D planning and modeling of building services systems using modern CAD/BIM software (e.g., Trimble Nova) Coordination and collaboration with internal departments as well as external planning partners, architectural firms, and clients Assistance with the preparation of bid documents, quantity takeoffs, and project-specific documentation Supporting the construction phase through technical clarifications, site visits, and quality assurance Qualifications Completed vocational training as a technician or a degree in building services, utilities, energy, or environmental engineering, or a comparable qualification Practical experience in the design of ventilation and HVAC systems, including calculations, sizing, and selection of technical components Proficiency in using a CAD or BIM application for building services engineering (e.g., Trimble Nova, Revit MEP, Plancal, or similar) Good overall technical understanding of building services engineering and its interfaces with related trades An independent, structured approach to work and a passion for cross-team collaboration Clear communication, a solution-oriented approach, and a strong sense of technical responsibility Working Conditions & Benefits Opportunity to work in a highly skilled, well-coordinated team with high standards of quality Diverse projects in both new construction and existing buildings requiring in-depth technical expertise A modern planning environment with digitized processes and a focus on BIM Personal development through training, software courses, and professional certification Flexible work schedules and a work environment that fosters initiative and professionalism