Sr. Mechanical Engineer - Semi Conductor

The Senior Mechanical Engineer – Semi Conductor is responsible for mechanical engineering design and technical execution for a new semiconductor facility in Arizona. The role focuses on mechanical systems and equipment associated with UPW, WWTP, ZLD, utilities, and process support systems.

This position leads mechanical design activities from concept through construction, supports procurement, fabrication, installation, and commissioning, and collaborates closely with process, electrical, I&C, civil, structural, vendors, and construction teams. Extensive experience in mechanical systems for water/wastewater and EPC projects is required.

The Senior Mechanical Engineer reports to the Engineering Manager and acts as a key technical authority for mechanical design deliverables.

Bachelor’s or Master’s degree in Mechanical Engineering

• 10+ years of mechanical engineering experience, preferably within EPC projects
• Water/wastewaterindustry experience strongly preferred
• Strong experience with piping systems, rotating equipment, and mechanical utilities
• Experience supporting construction and commissioning phases

Preferred

• EPC project execution mindset
• Strong cross-discipline coordination skills
• Clear technical communication with clients, vendors, and construction teams
• Ability to work in fast-paced, schedule-driven environments
• High attention to safety, quality, and regulatory compliance
• Ability to work on-site in Arizona asrequiredduring different project phases

Lead mechanical engineering design development for a new build semiconductor plant, including UPW, WWTP, ZLD, and utility systems.

Develop and review

Mechanical layouts and equipment arrangement drawings

Piping design, isometrics, and pipe specifications

Equipment selection and prepare data sheets (valves, pumps, air-blowers, tanks, cartridge filters, heat exchangers, filters, skids, etc.)

Material selection and corrosion allowances

Mechanical calculations (pipe sizing, pipe stress, friction losses, equipment sizing, equipment static and dynamic calculations, atmospheric tank calculation, pressurized vessels calculation)

Review equipment design and calculations provided by equipment suppliers and subcontractors

Ensure mechanical designs comply with

Owner & Contract specifications

Applicable US codes and standards (ASME, ANSI, ASTM, API, AWWA, etc.)

EPC Project Execution

Interface with process, electrical, I&C, and civil disciplines to ensure fully integrated design.

Support vendor technical evaluations, bid reviews, and equipment selection from a mechanical perspective.

Review vendor drawings and data sheets for compliance with specifications

Provide technical input during procurement, fabrication, and FAT activities

Support constructability reviews, installation sequencing, and field engineering activities

Participate in HAZOP, safety, and design reviews

Construction & Commissioning (Startup) Support

Provide mechanical engineering support during construction, including

Responses to RFIs and evaluation of field changes

Support for redline markups and as-built documentation

Mechanical system walkdowns and punch list resolution

Support system turnover, commissioning, and start-up activities

Technical Leadership

Act as a mechanical technical authority for UPW, WWTP, ZLD, and utility systems

Mentor junior mechanical engineers and review their deliverables

Coordinate with client engineering teams, vendors, and fab operations stakeholders

Cooperate closely with senior engineers for Process and Electrical, I&C and Civil disciplines

Report progress, risks, and technical issues to the Engineering Manager

Quality: Mechanical drawing accuracy, datasheet compliance, specification adherence

Schedule: On-time delivery of mechanical deliverables, review turnaround time

Compliance: Code compliance, regulatory adherence, QMS adherence

Technical Design Performance: First-pass acceptance, rework minimization

Cost & VE: CAPEX accuracy, value engineering opportunities

Constructability: Installation feasibility, fabrication and rework prevention

Collaboration: Cross-discipline coordination, stakeholder satisfaction

Documentation: On-time delivery of complete mechanical documentation