Design Engineer

Key Responsibilities

• Design and develop fin and tube heat exchangers, coils, condensers, evaporators, cooling coils, heating coils, and related components.
• Prepare technical drawings, 3D models, BOMs, and manufacturing documentation.
• Select appropriate tube materials, fin materials, fin spacing, tube diameter, circuiting, headers, and connection details.
• Use heat exchanger design software and engineering calculation tools.
• Support product development, customization, and value engineering projects.
• Coordinate with production teams to ensure designs are manufacturable and cost-effective.
• Review customer specifications and prepare technical proposals.
• Assist in troubleshooting design, production, and performance-related issues.
• Ensure compliance with relevant standards, codes, and customer requirements.
• Work with quality teams to resolve non-conformities and improve product reliability.
• Support testing and validation of heat exchanger prototypes and final products.
• Maintain design records, calculation sheets, drawings, and revision history.
• Collaborate with purchasing teams for material and component selection.
• Continuously improve existing product designs for better efficiency, durability, and cost reduction.

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Required Qualifications

• Bachelor’s degree in mechanical engineering, or Diploma in Thermal Engineering, or a related field.
• Experience in heat exchanger design, preferably in fin and tube heat exchangers.
• Strong understanding of heat transfer, thermodynamics, fluid mechanics, and HVAC/R systems.
• Knowledge of coil design, refrigerant circuits, air-side and fluid-side pressure drop calculations.
• Proficiency in CAD software such as AutoCAD, SolidWorks, Creo, Inventor, or similar.
• Ability to read and prepare engineering drawings and technical documents.
• Good understanding of manufacturing processes such as tube bending, fin punching, expansion, brazing, soldering, welding, and assembly.
• Familiarity with materials such as copper, aluminium, stainless steel, galvanized steel, and coated fins.
• Strong analytical and problem-solving skills.

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Preferred Skills

• Experience with heat exchanger selection or design software.
• Knowledge of HVAC, refrigeration, chiller, AHU, condenser, evaporator, and coil applications.
• Familiarity with standards such as ASHRAE, AHRI, ASME, EN, ISO, or relevant industry codes.
• Experience in design optimization for performance, pressure drop, noise, corrosion resistance, and cost.
• Knowledge of refrigerants, including low-GWP and natural refrigerants.
• Understanding of ERP/PDM systems and BOM management.
• Experience with prototype testing, performance validation, and failure analysis.

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Technical Skills

• Heat exchanger thermal design
• Fin and tube coil design
• CAD modeling and drafting
• BOM preparation
• Mechanical design calculations
• Pressure drop calculation
• Refrigerant circuiting
• Material selection
• Manufacturing support
• Product testing and validation
• Cost reduction and value engineering

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Soft Skills

• Strong communication skills
• Team collaboration
• Attention to detail
• Problem-solving mindset
• Ability to manage multiple projects
• Customer-focused approach
• Willingness to learn and improve designs continuously

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Experience Required

Minimum 5 years of experience in heat exchanger, HVAC, refrigeration, or mechanical product design is preferred.

Founded in 1971, the Al Shirawi Group has been serving people & industry for the last five decades. The Al Shirawi Group of Companies, grew from an unrelenting passion to provide the Middle East with high-quality solutions in the trading, industrial, distribution, contracting and service industries. From the Group’s humble beginning as a trading house, today, Al Shirawi is a burgeoning conglomerate and one of the most reputed names in the Middle East with offices across the GCC region in Qatar, Oman, Kuwait , India and Egypt. 

Powered by a 10,000+ workforce and supported by the latest technology and infrastructure, the Group has established itself as one of the largest, most trusted and prestigious partners for leaders across the Persian Gulf. Through its diverse industry expertise and over 35 companies, Al Shirawi has remained committed to ensuring excellence in every product and offering, enabling its business units to leave an indelible impact in the global market.

Since its inception, Al Shirawi has striven to create a culture where each individual feels seen and valued, rooted in excellence, transparency, compassion, honesty, empowerment and discipline. The Group has won multiple prestigious awards for years — a testament to the technical pedigree, people-centric approach and desire to serve the community with sustainable, cutting-edge solutions.

The premier HVAC coil manufacturing & coating company in the GCC region, OCC supplies high-quality finned tube coils and anti-corrosion solutions through investments in the most advanced technology and automation processes. The company is also the exclusive distributor of Heat Pipe Technology, Inc. (HPT) and fresh air UV lamps in the region.