Mechanical Design Engineer with an experience in design different hvac system including but not limited to: o Prepare and study Design concept according to standards and codes. o Cooling and Heating loads calculations o Air distribution and ventilation according to codes and standards. o Duct design and sizing. o Piping design and sizing. o Equipment (Fans,FCUs.. etc) selection and AHUs and its components sizing and selection o External static pressure calculation. o Pump head calculation. o Heat Recovery units selection and sizing according to requirements. o Staircase Pressurization system design and calculation. o Smoke and Make-up air calculations. o Preparing of BOQ.