Senior Mechanical Engineer

Job Title: Senior Mechanical Engineer

Location: Phoenix Arizona 85083

Qualifications:

• Bachelor’s Degree in Mechanical Engineering from an ABET-accredited College/University.
• Experience working for an AEC company
• Active PE license OR has all requirements to obtain one
• Experience in mechanical engineering design of industrial projects/facilities.

Our client is seeking a skilled and experienced Sr. Mechanical Engineer to join our team. As a Senior Mechanical Engineer, you will be a pivotal leader in the design, engineering, and delivery of highly complex and specialized mechanical systems. You will spearhead projects demanding innovative thinking, execution, and an understanding of advanced mechanical principles within contamination-controlled environments. This role offers the unique opportunity to work on technically challenging projects, mentor developing engineers, and directly influence the success of our leading semiconductor clients and our firm's growth in this dynamic sector.

Responsibilities:

• Lead mechanical system design for semiconductor tool installations:
• Develop utility matrices based on tool vendor requirements.
• Design point-of-use (POU) connections for all mechanical utilities (PCW, exhaust, gases, drains).
• Ensure designs meet stringent vibration, acoustic, and EMI/RFI criteria.
• Lead the design, analysis, and specification of complex HVAC systems for semiconductor manufacturing environments.
• Engineer critical process cooling and heating systems.
• Design and oversee ultra-pure water (UPW) and industrial water systems, including RO/DI water, process drains, and chemical delivery/drain systems.
• Develop and detail specialized exhaust systems for hazardous production materials (HPMs).
• Perform detailed thermodynamic, hydraulic, and psychrometric analyses to optimize system performance, energy efficiency, and operational stability.
• Champion safety in design, ensuring compliance with all relevant codes, standards (e.g., ASME, ASHRAE, NFPA, SMACNA, SEMI standards), and client-specific EHS requirements for HPMs.
• Lead and participate in design reviews, HAZOP studies, and constructability reviews.
• Drive interdisciplinary coordination with electrical, structural, process, chemical, controls, and architectural teams to ensure seamless integration of mechanical systems.
• Conduct field verifications, site surveys, and as-built documentation to assess existing conditions, identify design constraints, and support construction and commissioning phases.
• Provide engineering support during construction, including RFI responses, submittal reviews, site inspections, and system start-up and commissioning oversight.
• Develop detailed sequence of operations (SOO) and contribute to control system narratives.
• Serve as a technical authority and mentor in mechanical engineering, guiding junior engineers and designers, and fostering a culture of technical excellence and continuous improvement.