Senior Mechanical Applications Engineer - HVAC/Dehumidification

hi-best trading & contracting co.; Saudi Arabia; On-site; SAR 180,000 - 240,000; Full time

Job summary

HI-BEST in Riyadh is seeking a senior Mechanical Application Engineer with a strong background in engineering calculations, equipment selection, and technical submissions for dehumidification, solar water-heating, and heat-pump systems. This is a technical office-based role requiring independent project management and clear communication.

You will review drawings, prepare submittals, support testing and commissioning, and coordinate with consultants, contractors, and manufacturers to deliver

Qualifications

• Bachelor's degree in Mechanical Engineering.
• 7+ years of relevant experience in mechanical application engineering, HVAC design, technical presales, or equipment selection.
• Strong knowledge of HVAC systems, psychrometrics, humidity control, ventilation, sensible and latent loads, airflow, and duct-system fundamentals.
• Proven ability to independently perform engineering calculations and select suitable equipment.
• Strong experience in reviewing mechanical specifications, drawings, BOQs, and consultant requirements.
• Proficiency in Carrier HAP, AutoCAD, Revit MEP, and Microsoft Excel.
• Excellent written and verbal communication skills.
• Strong written and spoken English; Arabic is an advantage.

Responsibilities

• Perform psychrometric analysis, moisture-load calculations, cooling and heating-load calculations, airflow calculations, and hydraulic calculations.
• Select and size commercial and industrial dehumidifiers for pools, warehouses, and other facilities.
• Select and size solar water-heating and heat-pump systems based on demand and climate conditions.
• Review project specifications, mechanical drawings, tender documents, equipment schedules, and BOQs.
• Prepare technical submittals, compliance statements, equipment schedules, calculation sheets, and proposals.
• Develop mechanical layouts, schematic drawings, equipment arrangements, and installation concepts.
• Review AutoCAD, Revit MEP, BIM, and MEP coordination drawings.
• Coordinate with consultants, MEP contractors, clients, suppliers, and manufacturers.
• Participate in technical meetings and explain engineering solutions clearly.
• Provide value-engineering alternatives and technical support to sales and project teams.
• Support installation, testing, commissioning, troubleshooting, and performance evaluation.

Skills

HVAC design

psychrometrics

humidity control

ventilation

load calculations

duct systems

AutoCAD

Revit MEP

Microsoft Excel

Education

Bachelor's degree in Mechanical Engineering

Tools

Carrier HAP

AutoCAD

Revit MEP

Microsoft Excel

Job description

HI-BEST in Riyadh is seeking a senior Mechanical Application Engineer with a strong background in engineering calculations, equipment selection, and technical submissions for dehumidification, solar water-heating, and heat-pump systems. This is a technical office-based role requiring independent project management and clear communication.

You will review drawings, prepare submittals, support testing and commissioning, and coordinate with consultants, contractors, and manufacturers to deliver