Senior Mechanical, Refrigeration & Energy Systems Engineer

JOB SUMMARY Aldelano is seeking a highly skilled, technically competent, and experienced Mechanical, Refrigeration & Energy Systems Engineer capable of designing, building, installing, troubleshooting, repairing, and maintaining industrial refrigeration systems, heavy-duty generators, and integrated energy solutions. The ideal candidate must possess strong practical engineering skills, particularly in the design and construction of 40-foot refrigerated cold boxes (cold rooms), solar-powered refrigeration systems, industrial cooling equipment, and heavy-duty power generation systems. This position requires an engineer who can independently manage engineering projects from initial concept, technical calculations, and costing through equipment selection, fabrication, installation, commissioning, and long-term maintenance. We are looking for a hands-on engineer who can design, calculate, build, troubleshoot, and deliver functional engineering systems—not someone with theoretical knowledge alone. KEY RESPONSIBILITIES Heavy-Duty Generator Maintenance and Repairs Diagnose, troubleshoot, repair, and maintain heavy-duty diesel generators and associated electrical and mechanical systems. Perform preventive and corrective maintenance on industrial generators. Troubleshoot engine failures, alternators, voltage regulators, control panels, fuel systems, and cooling systems. Diagnose electrical and mechanical faults affecting generator efficiency and performance. Conduct generator load assessments, fuel consumption calculations, and power output evaluations. Maintain automatic transfer switches (ATS), generator synchronization systems, and associated power distribution equipment. Develop maintenance schedules to minimize downtime and operational costs. Industrial Refrigeration System Design and Construction Design and construct complete refrigeration systems from scratch. Develop functional refrigeration solutions for agricultural produce storage, preservation, and industrial cooling applications. Calculate refrigeration loads, cooling capacities, insulation requirements, and temperature control specifications. Select and size compressors, condensers, evaporators, expansion valves, refrigerant piping, and other refrigeration components. Understand refrigeration cycles, heat transfer, thermodynamics, and energy efficiency. Supervise fabrication, assembly, installation, testing, and commissioning of refrigeration systems. Diagnose and repair refrigeration system failures, including compressor faults, refrigerant leaks, pressure irregularities, and electrical control problems. 40-Foot Cold Box Design, Construction and Maintenance Design and develop complete 40-foot refrigerated cold boxes using shipping containers or purpose-built insulated structures. Calculate the refrigeration capacity required to maintain specified internal temperatures under different environmental and product-loading conditions. Determine appropriate insulation materials, thicknesses, thermal performance, and moisture protection requirements. Design efficient airflow distribution, ventilation, humidity management, and temperature monitoring systems. Calculate product pull-down loads, transmission heat gains, infiltration loads, and equipment heat loads. Prepare detailed engineering drawings, equipment specifications, and bills of materials. Supervise cold box construction, refrigeration equipment installation, and commissioning. Troubleshoot and maintain completed cold boxes to ensure reliable and efficient operation. Implement preventive maintenance systems and emergency breakdown response procedures. Solar Refrigeration and Energy System Design Calculate the total energy requirements of refrigeration systems, including daily consumption in kWh and peak power demand in kW. Design solar-powered and hybrid refrigeration systems for 40-foot cold boxes. Determine required solar panel capacity, battery storage, inverter sizing, and backup generator capacity. Perform solar energy yield calculations based on available sunlight, system losses, and operational requirements. Understand energy conversion between electrical, mechanical, and thermal systems. Evaluate the coefficient of performance (COP), refrigeration efficiency, and overall system energy consumption. Design systems capable of integrating solar power, batteries, generators, and grid electricity. Recommend energy-efficient solutions to reduce operating costs and improve system reliability. Engineering Cost Estimation and Project Budgeting Prepare comprehensive cost estimates for refrigeration and energy projects. Calculate the cost of compressors, condensers, evaporators, insulation, solar panels, batteries, inverters, piping, electrical components, fabrication, and installation. Develop detailed bills of quantities (BOQ) and bills of materials (BOM). Evaluate alternative equipment and materials based on cost, performance, reliability, and availability. Prepare project budgets covering materials, labour, transportation, installation, commissioning, and contingency allowances. Calculate estimated energy consumption costs, maintenance costs, and long-term operating expenses. Conduct feasibility assessments and cost-benefit analyses for proposed engineering projects. Monitor project expenditure and deliver engineering projects within approved budgets. Troubleshooting, Maintenance and Technical Support Diagnose mechanical, electrical, refrigeration, and energy system faults. Develop and implement preventive and corrective maintenance procedures. Monitor equipment performance and recommend improvements. Maintain accurate maintenance records, engineering reports, and equipment documentation. Train technicians and maintenance personnel on equipment operation and safety. Ensure compliance with relevant electrical, mechanical, refrigeration, environmental, and workplace safety standards. REQUIRED QUALIFICATIONS Bachelor\'s degree or HND in Mechanical Engineering, Electrical Engineering, Mechatronics Engineering, Refrigeration and Air Conditioning Engineering, or a closely related discipline. Minimum of 5 - 8 years of practical experience in industrial refrigeration, heavy-duty generator maintenance, or integrated energy systems. Demonstrable experience designing, constructing, and commissioning industrial refrigeration or cold storage systems. Strong understanding of thermodynamics, heat transfer, refrigeration cycles, and electrical power systems. Practical knowledge of solar photovoltaic systems, battery storage, inverters, and hybrid energy configurations. Ability to independently perform cooling-load calculations, power demand assessments, and energy consumption estimates. Experience preparing engineering drawings, material specifications, project budgets, and cost estimates. Proficiency in relevant engineering design and calculation software is an advantage. Ability to work independently, supervise technical teams, and manage engineering projects from start to finish. ESSENTIAL TECHNICAL COMPETENCIES Candidates must demonstrate practical competence in the following areas: Generator Engineering: Repair, servicing, troubleshooting, and maintenance of heavy-duty diesel generators. Refrigeration Engineering: Complete refrigeration system design, component sizing, construction, installation, and maintenance. Cold Box Engineering: Design and construction of 40-foot refrigerated cold storage systems. Energy Calculations: Accurate calculation of electrical loads, cooling loads, energy consumption, and power requirements. Solar Engineering: Sizing and integration of solar panels, battery banks, inverters, and backup power systems. Cost Engineering: Preparation of detailed budgets, equipment costing, bills of quantities, and project cost projections. Practical Troubleshooting: Ability to identify and resolve complex mechanical, electrical, and refrigeration faults. PRACTICAL TECHNICAL ASSESSMENT Shortlisted candidates will undergo a technical assessment to demonstrate their ability to: Design a complete refrigeration system for a 40-foot cold box intended for agricultural produce storage. Calculate the refrigeration capacity required to maintain a specified storage temperature. Determine the electrical energy consumption of the proposed system. Calculate the solar panel capacity, battery storage, inverter requirements, and backup power needed to operate the cold box. Prepare a detailed equipment list and realistic construction budget. Explain the installation, commissioning, troubleshooting, and maintenance procedures. Diagnose practical generator and refrigeration equipment faults. Selection will be based primarily on demonstrated technical competence, practical engineering experience, and the ability to deliver a fully functional system. PERSONAL ATTRIBUTES Strong analytical and problem-solving skills. Highly practical, resourceful, and technically innovative. Excellent attention to detail and engineering accuracy. Ability to work under pressure and meet project deadlines. Strong leadership, communication, and project management skills. Cost-conscious, safety-focused, and results-oriented. Willingness to work on-site and respond promptly to equipment emergencies. EXPECTED DELIVERABLES The successful candidate will be expected to: Maintain reliable operation of the company\'s heavy-duty generators. Produce technically sound refrigeration and cold box designs. Develop accurate cooling-load, electrical-load, and solar energy calculations. Prepare comprehensive project budgets and material requirements. Successfully construct, install, test, and commission refrigeration systems. Establish effective maintenance and troubleshooting procedures. Improve equipment reliability while reducing energy consumption and operational costs. RESUMPTION Immediate resumption is required. Preference will be given to candidates who are available to commence work immediately and can demonstrate proven experience in similar engineering projects.