Mechanical Engineer – MEP – Substation & HVDC

Job description

Company Description At AECOM, we’re delivering a better world. We believe infrastructure creates opportunity for everyone. Whether it’s improving your commute, keeping the lights on, providing access to clean water or transforming skylines, our work helps people and communities thrive. Our clients trust us to bring together the best people, ideas, technical expertise and digital solutions to our work in transportation, buildings, water, the environment and new energy. We’re one global team – 47,000 strong – driven by a common purpose to deliver a better world. Job Description Job Purpose Monitor and coordinate the design, installation, testing, commissioning and handover of mechanical, electrical and plumbing interface systems, with primary responsibility for HVAC, ventilation, equipment cooling, fire-protection, plumbing, water-supply, drainage and associated mechanical auxiliary systems for substations and HVDC terminal stations. Key Responsibilities Review MEP design criteria, design basis reports, calculations, layouts, specifications, equipment data sheets and vendor documents. Review HVAC heat-load calculations, equipment sizing, system zoning, redundancy and system configuration. Review cooling and ventilation requirements for converter halls, valve halls, GIS halls, control rooms, relay rooms, battery rooms, cable basements, equipment rooms and auxiliary buildings. Review chilled-water, direct-expansion, ventilation, exhaust, pressurization, precision-cooling and smoke-extraction systems. Review mechanical cooling systems associated with converter valves, transformers, power-electronic equipment and other HVDC equipment. Verify the reliability, redundancy, maintainability and standby philosophy for critical HVAC and equipment-cooling systems. Review pumps, chillers, cooling towers, heat exchangers, air-handling units, fan-coil units, ventilation fans, piping, ducting, insulation, valves, dampers and associated controls. Review fire-protection philosophy and mechanical fire-fighting systems, including fire-water storage, fire pumps, hydrants, monitors, sprinklers, water-mist, foam or deluge systems, as applicable. Verify fire-pump sizing, hydraulic calculations, fire-water network routing, equipment-room protection and statutory fire-safety requirements. Review plumbing systems, potable-water supply, domestic-water storage, sanitary fixtures, soil and waste systems and sewage-disposal arrangements. Review stormwater drainage, roof drainage, floor drains, trench drainage, oil-water separation and water-disposal systems. Review sewage-treatment, water-treatment or packaged utility systems where included in the project scope. Monitor installation of mechanical equipment, piping, ducting, supports, insulation, vibration isolators, dampers, valves and accessories. Verify compliance of installed systems with approved drawings, specifications, method statements, inspection and test plans and manufacturer recommendations. Coordinate MEP interfaces with civil, architectural, structural, electrical, control, protection, fire-alarm, BMS, SCADA and equipment packages. Verify equipment access, maintenance clearances, lifting provisions, drainage arrangements and safe operating access. Review builders’ work requirements, equipment foundations, embedded items, sleeves, openings, trenches and service penetrations. Verify fire stopping and sealing of MEP penetrations through fire-rated walls, floors and compartments. Review piping pressure-test procedures, flushing, cleaning, disinfection, water-treatment and system-preservation requirements. Witness hydrostatic testing, leakage testing, duct-leakage testing, flushing, balancing and functional testing of MEP systems. Witness testing, adjusting and balancing of air-distribution and chilled-water systems. Verify operation of alarms, trips, interlocks, standby equipment, duty/standby sequencing and automatic changeover. Review HVAC and mechanical-system integration with BMS, fire-alarm, electrical control and emergency shutdown systems. Review fire and smoke-damper operation, stairwell or room pressurization and emergency-ventilation functions. Monitor system-performance testing against approved temperature, humidity, pressure, air-change, flow and noise requirements. Review equipment test certificates, inspection records, calibration certificates and commissioning documentation. Identify design, installation or performance deficiencies and recommend corrective and preventive actions. Support preparation and closure of punch lists, NCRs and outstanding MEP interface issues. Review as-built drawings, O&M manuals, spare-parts lists, training materials and preventive-maintenance requirements. Support integrated system testing, reliability demonstration, final acceptance and handover of MEP systems. Key Deliverables MEP design and vendor-document review comments. HVAC, equipment-cooling and ventilation review reports. Fire-protection and fire-water system review records. Plumbing, water-supply, sanitary and drainage-system review records. Mechanical equipment and installation-inspection reports. Piping pressure-test, flushing and cleaning records. HVAC testing, adjusting and balancing reports. Fire-pump and fire-water system performance-test reports. Integrated MEP functional and performance-test reports. MEP interface and issue register. MEP punch-list and system-readiness report. As-built, O&M manual and handover-dossier review report. Qualifications Minimum Qualification and Experience Bachelor’s degree in Mechanical Engineering from a recognized institution. Minimum 8 years of experience in MEP, HVAC and mechanical auxiliary systems for power, industrial or major infrastructure projects. Experience in EHV substations, GIS buildings, converter halls, valve halls, control buildings, relay rooms or similar critical facilities. Knowledge of HVAC cooling-load calculations, ventilation, pressurization, smoke-control and indoor environmental requirements. Experience in fire-water systems, fire pumps, hydrants, sprinklers, water-mist or deluge systems, as applicable. Knowledge of plumbing, potable-water supply, sanitary systems, stormwater drainage, sewage treatment and water-management systems. Familiarity with mechanical equipment specifications, piping systems, pumps, heat exchangers, cooling towers, chillers, air-handling units and building-management interfaces. Working knowledge of applicable codes, standards, statutory requirements and testing and commissioning procedures for MEP systems. Additional Information Monitor and coordinate the design, installation, testing, commissioning and handover of mechanical, electrical and plumbing interface systems, with primary responsibility for HVAC, ventilation, equipment cooling, fire-protection, plumbing, water-supply, drainage and associated mechanical auxiliary systems for substations and HVDC terminal stations. At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment. About AECOM AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. What makes AECOM a great place to work You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity. As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.