Pharmaceutical Factory HVAC Specialist Needed

I'm looking for a specialist to help design HVAC systems for a pharmaceutical factory in compliance with Saudi Arabia regulations.

Key Areas of Focus:
- CFM Pressure Differentials (Top Priority)
- Air Filtration Air Changes
- Humidity Control
- Energy Efficiency
- Cross-Contamination Prevention
- Material Flow HVAC

Requirements:
- No existing calculations; all must be done from scratch
- Deliverables in digital format (Excel, PDF, etc.)

Ideal Skills & Experience:
- HVAC expertise, especially in pharmaceuticals
- Knowledge of Saudi regulations
- Proficient in data analysis and calculations
- Experience with digital documentation

Please provide detailed estimates and calculations for the listed requirements.