• Develop mechanical designs including HVAC, plumbing, drainage, and firefighting

systems, based on project specifications and applicable codes.

• Perform load calculations using design software (HAP or equivalent) and determine

equipment capacities and duct/piping sizes.

• Identify design and constructability issues and raise RFIs.

• Prepare design drawings, schematics, and single-line diagrams for all mechanical

systems in coordination with architectural and structural layouts.

• Review design drawings and specifications to ensure compliance with project and

authority standards (ASHRAE, SMACNA, NFPA, CIBSE).

• Select and specify HVAC and plumbing equipment, including chillers, FAHUs, AHUs,

FCUs, pumps, valves, and control devices.

• Prepare BOQs, technical specifications, and design reports.

• Coordinate with consultants, clients, and other disciplines (electrical, civil, architectural)

to resolve technical issues and ensure proper integration of services.

• Prepare shop drawings to ensure compliance with approved design intent and authority

requirements.

• Liaise with local authorities (QCDD & Kahramaa, etc.) for design approvals, NOCs,

and compliance verification.

• Able to identify the Value Engineering & cost saving opportunities.

• Participate in BIM coordination meetings and ensure mechanical services are properly

routed and clash-free.

• Support the QA/QC team in reviewing inspection and testing procedures from a design

compliance perspective.

• Ensure all designs are properly documented, updated, and controlled according to ISO

quality procedures.

• Prepare as-built documentation and final design reports for project handover.

• Assist in commissioning plan preparation and system performance validation as per

design criteria.

• Maintain up-to-date knowledge of authority regulations, energy efficiency requirements,

and new design technologies.