Industrial Mechanical Engineer

About the role

AECOM is the world's trusted infrastructure consulting firm, partnering with clients to solve the world's most complex challenges and deliver a better world. With over 50,000 professionals globally, we deliver projects that create positive, tangible impact across water, environment, energy, transportation, and buildings.

This Senior Industrial Mechanical Engineer role leads the design of specialty gas, bulk gas, and chemical distribution systems for AECOM's Advanced Manufacturing practice, serving semiconductor, battery, energy and nuclear fuel, and defense and aerospace sectors. The position serves as technical authority on hazardous production materials and ultra-high-purity (UHP) systems from concept through turnover, with client-facing technical leadership and mentorship responsibilities. Work location model: Hybrid. United States citizenship is required; relocation assistance may be available. Requisition ID: J10161959.

Responsibilities

• Design bulk and specialty gas systems (N₂, O₂, Ar, H₂, He, CDA; silane, NH₃, NF₃, HF, Cl₂, WF₆), including gas cabinets, VMBs/VMPs, purifiers, and point-of-use connections.
• Design bulk chemical distribution for acids, bases, solvents, CMP slurry, and battery electrolyte: dispense units, day tanks, reclaim, and double-contained piping with leak detection.
• Specify UHP materials and quality: EP 316L stainless, PFA/PVDF, orbital welding, cleanliness, and particle, moisture, and O₂ certification testing.
• Lead code and life-safety strategy: IBC/IFC Group H occupancy, MAQ and control-area analysis, HPM rooms, and HMIS/HMMP documentation.
• Coordinate toxic gas monitoring, emergency shutdown, and exhaust abatement with HVAC, fire protection, and controls.
• Develop P&IDs, utility matrices, tool hookup and point-of-connection (POC) design, and hydraulic and pressure-drop calculations.
• Support construction: submittals, RFIs, pressure and leak testing, commissioning, and turnover.
• Serve as client-facing technical lead in workshops and pursuits; mentor plumbing and mechanical engineers to extend AECOM's process-system capability.
• Travel as needed to client sites.

Requirements

• Bachelor's degree in Mechanical or Chemical Engineering, or related field, and 6 years of experience designing specialty gas or chemical distribution systems for semiconductor, battery, pharmaceutical, or similar high-purity facilities (or demonstrated equivalency of experience and/or education).
• Working knowledge of NFPA 55, NFPA 400, ASME B31.3, IFC hazardous materials provisions, and CGA standards.
• PE license, or ability to obtain PE within 24 months.
• Proficiency in Revit and/or AutoCAD Plant 3D and P&ID development.
• United States citizenship required (due to nature of the role).

Preferred qualifications

• 8+ years of experience, including 5+ years designing specialty gas or chemical distribution systems for semiconductor, battery, pharmaceutical, or similar high-purity facilities.
• Semiconductor fab or tool-install experience; familiarity with SEMI S2, S6, and F-series standards and NFPA 318.
• Hydrogen systems, battery (electrolyte, NMP recovery), or NRC/DOE-regulated fuel-cycle facility experience.
• Background with an EPC, tool-install contractor, or industrial gas supplier.
• Steam, heat-transfer fluid, or process chemical system design.
• U.S. citizenship and ability to obtain a security clearance (required for Federal and defense projects).

Additional information

• Relocation assistance may be available.
• Sponsorship for U.S. employment authorization is not available.
• All newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

Benefits

AECOM offers comprehensive benefits to meet diverse employee needs. Depending on employment status, benefits may include:

• Medical, dental, vision, life, AD&D, and disability benefits
• Paid time off and leaves of absence
• Voluntary benefits and perks
• Flexible work options
• Well-being resources and employee assistance program
• Business travel insurance
• Service recognition awards
• Retirement savings plan and employee stock purchase plan

AECOM champions growth and career ambitions, offering award-winning training and development programs, cutting-edge technology, and a global network of experts. The workplace is built on respect, collaboration, and community.

Pay

Offered rate of compensation is based on individual education, qualifications, experience, and work location. The range for this position is $135,000 to $165,000 per year.