Mechanical Dry CSU Engineer

About the Role

The Mechanical DRY CSU Engineer leads the discipline CSU team responsible for high-purity process and utility systems (specialty gases, chemicals, slurry, ultrapure water, and waste) during commissioning and start-up of the semiconductor fabrication facility. The role plans and supervises discipline execution from construction completion through system turnover to operations, ensuring work is performed safely, on schedule, and to design intent.

The Mechanical Dry Commissioning Engineer is responsible for planning, coordinating, and executing dry commissioning activities for mechanical systems within semiconductor fabrication facilities (fabs). The role ensures systems are installed correctly, meet design requirements, operate safely, and are ready for wet commissioning, process qualification, startup, and handover to operations. This position works closely with Engineering, Construction, Vendors, Quality, Facilities, and Operations teams to verify mechanical systems including HVAC, cleanroom systems, process cooling water, chilled water, heating water, exhaust systems, bulk gas infrastructure, and supporting utilities.

Owns the planning, supervision, and execution of CSU for high-purity process and utility systems (specialty gases, chemicals, slurry, ultrapure water, and waste) on the F62 project — Mechanical dry commissioning engineering in the semiconductor industry involves pre-functional verification and testing of process mechanical, cleanroom HVAC, and dry utility systems. Accountable for the discipline's safe and quality execution within the CSU plan set by the Commissioning Manager.

Responsibilities

• Commissioning Planning: Develop Mechanical Commissioning Plans and Procedures; review design documents, specifications, P&IDs, equipment submittals, and vendor documentation; support development of commissioning schedules and turnover strategies; participate in Constructability, HAZOP, and Operational Readiness Reviews.
• Dry Commissioning Execution: Perform mechanical system inspections and verification activities; verify installation against approved drawings and specifications; conduct walkdowns and punch-list management; verify mechanical completion status; execute pre-functional and functional inspections; coordinate system turnover from Construction to Commissioning.
• System Verification: Confirm equipment alignment, rotation checks, lubrication, and preservation requirements; verify equipment labels, identification, and assets; review pressure testing, leak testing, flushing, and cleaning records; verify valve lineups and equipment accessibility; ensure safety interlocks and mechanical protections are functional.
• Semiconductor Facility Systems Support: Commissioning of cleanroom HVAC systems, Air Handling Units (AHUs), Makeup Air Units (MAUs), exhaust systems, Process Cooling Water (PCW), Chilled Water Systems (CHW), Condenser Water Systems (CW), Heating Hot Water Systems (HHW), bulk chemical distribution support systems, UPW support utility systems, vacuum systems, Compressed Dry Air (CDA), mechanical equipment skids, and waste treatment mechanical systems.
• Documentation and Quality: Develop and execute commissioning check sheets; complete Mechanical Completion Certificates (MCCs); generate System Turnover Packages (STOs); review subcontractor turnover documentation; maintain commissioning databases and digital turnover systems; ensure compliance with ISO 9001 and project quality requirements.
• Vendor and Contractor Coordination: Coordinate OEM vendor startups; interface with construction contractors and trade partners; monitor commissioning progress and resolve technical issues; participate in daily coordination meetings.
• Safety and Compliance: Support implementation of LOTO procedures; participate in Job Hazard Analysis (JHA) reviews; ensure compliance with project EHS requirements; promote a zero-incident safety culture.

Qualifications

• Bachelor's Degree in Mechanical Engineering or related discipline (equivalent commissioning experience may be considered).
• 5+ years of mechanical commissioning experience in semiconductor, pharmaceutical, data center, or advanced manufacturing facilities.
• Experience with mission-critical utility systems (preferred).
• Familiarity with mechanical completion and turnover processes.
• Deep discipline knowledge and hands-on commissioning experience in the relevant systems.
• Proven ability to lead and mentor a field CSU team and manage to schedule and turnover gates.
• Strong understanding of CSU processes: test packages, system turnover (green tag to blue tag), and safe systems of work.
• Working knowledge of LOTO and energization permitting.
• Excellent coordination and communication skills with construction, engineering, vendors, and client.
• High-purity systems experience — ultrapure water (UPW), bulk and specialty gas, and chemical distribution — with SEMI / AGS qualification, passivation, and purity verification.

Required Knowledge and Skills

• HVAC Systems
• Cleanroom Design and Operations
• Hydronic Systems
• Pumps and Rotating Equipment
• Heat Exchangers
• Utility Distribution Systems
• Mechanical Equipment Startup
• P&IDs and Mechanical Drawings
• Commissioning Documentation Processes

Key Competencies

• Collaborate: Actively seeks out others' opinions and input and is open-minded to their views. Challenges others appropriately and is also open to being challenged on their own views.
• Communicate: Is effective at adapting their communication style appropriately to their audience, providing context and using the right tone and level of information.
• Customer Focus: Prioritizes the customer needs and puts these at the forefront of all interactions. Ensures that others within their team maintain this same approach.
• Deliver: Demonstrates making well thought out, timely decisions and prioritization that leads to successful outcomes. Includes the right people at the right time.
• Problem Solve: Accurately assesses a situation to find the best solution or way of working to resolve the issues. It is focused on creating a long term fix rather than a short-term solution.
• Role Model: Contributes to the Bechtel culture by inspiring and motivating others through their positive approach and attitude. Comes to work determined to do a good job, for themselves and for their team.
• Adaptability: Deep understanding of interconnected technology systems and how to troubleshoot them while they are actively running.
• Compliance: Ensure all procedures and equipment setups meet regulatory, OSHA, and environmental safety standards.
• Troubleshooting & Diagnostics: Resolve complex failures involving computer hardware, network routers, switches, and software interfacing directly with control equipment.

Typical Deliverables

• Mechanical Completion Check Sheets
• System Boundary Drawings
• Turnover Packages
• Functional Test Procedures
• Commissioning Reports
• Punch List Reports
• Startup Readiness Reviews
• Mechanical System Acceptance Documentation

Work Location and Schedule

This position is designated as part-time telework and will require at least three days of in-person attendance per week at the assigned office or project in Chandler, AZ. Weekly in-person schedules will be determined by the individual and their supervisor, in consultation with functional or project leadership. Relocation authorized: National – Family.

Benefits

Bechtel offers robust benefits to ensure our people thrive, including programs to advance careers, enhance culture, and provide time to recharge. Learn more at Bechtel Total Rewards.