Senior Mechanical Engineer - Site Lead

About the Role

We are seeking a Senior Mechanical Engineer - Site Lead to provide onsite support at a semiconductor manufacturing facility in Wilton, CT. This Senior Mechanical Engineer remote role will serve as a site lead responsible for managing and executing capital improvement and sustaining operations projects involving complex mechanical and process systems, including HVAC, hydronics, process piping, exhaust, plumbing, wastewater, chemical and gas distribution, and pure water systems.

The successful candidate will bring 15+ years of experience in scope development, design review, and project execution, with a strong emphasis on safety, code compliance, and vendor coordination. Acting as the owner’s representative, this individual will collaborate closely with multidisciplinary engineering teams, contractors, and site stakeholders to deliver projects from concept through construction and turnover, while mentoring internal staff and ensuring adherence to engineering standards, schedules, and budgets. This is a contract-to-hire, fully onsite position offering relocation assistance on a case-by-case basis.

What You'll Do

• Manage the site’s capital improvements team and serve as the owner’s representative and operations interface for capital projects.
• Collaborate with on-site design teams on planning, execution, and closeout, ensuring alignment with scope, schedule, budget, and project delivery standards.
• Oversee design, procurement, and construction for equipment renewal and replacement projects.
• Provide daily engineering support to Maintenance and vendors.
• Deliver engineering expertise from concept through construction and turnover.
• Mentor ASML staff and integrate standards and tools into the Certified Reliability engineering (CRE) roadmap.
• Oversee a multidiscipline team of 5-6 engineers and designers (Mechanical, Electrical, I&C, Reliability, Drafting/Design Technician, Project Engineer).
• Collaborate with on-site personnel to support projects of varying size and complexity.

Requirements

• Bachelor's degree in Mechanical or Chemical Engineering from an ABET Accredited University.
• Licensed Professional Engineer (PE) in Connecticut or ability to obtain within 3 months (active NCEES record).
• Fifteen (15) or more years of practical application of process and mechanical facilities engineering.
• Solid knowledge and application of the mechanical/process requirements per ASME and ASME B31.3, building codes, fire codes, code compliance (SEMI, NFPA, IBC/IMC, CT) amendments, and other related standards such as ASHRAE.
• Experience reviewing vendor submittal packages against client requirements and specifications.
• Field experience interacting with subcontractors and construction personnel.
• Strong verbal and written communication skills.
• Strong organizational skills, ability to prioritize, and leadership experience.

Nice to Have

• Five (5) years of experience as a facility engineer.
• Working knowledge of Maintenance & Reliability Support, Utilities & Infrastructure Design and Reliability Analysis, Capital Project Engineering, Controls & Automation.
• Proficient working knowledge of design software such as AutoCAD, Revit, Navisworks or BIM360.

What We Offer

• Relocation assistance on a case-by-case basis.
• Contract-to-hire position with potential for conversion to full-time employment.
• Opportunity to work on impactful projects in a dynamic environment.
• Supportive team culture focused on collaboration and mentorship.
• Competitive salary and benefits package.