Mechanical Engineering Design Calculations for Commercial Building

I am seeking a proficient mechanical engineer with expertise in HVAC, Firefighting, and Plumbing design calculations for a commercial building.

Key Requirements:
- Design calculations for HVAC (Cooling Load), Firefighting, and Plumbing systems
- Specific calculations for a commercial building of approximately 400 sq. m

Ideal Skills:
- Mechanical engineering
- HVAC system design
- Firefighting system design
- Plumbing system design
- Commercial building experience

Please provide your bid if you have the requisite skills and experience.