Mechanical 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.

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.

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.

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

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

Experience Required

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

Responsibilities

• Development of products as per customer specification and inputs.
• Quantification, sizing and measurement of the products to be designed.
• Liaising with other designers, including architects, to agree on safe designs and their fit with the aesthetic concept of the construction;
• Making drawings, specifications and computer models of structures for building contractors.